forked from KolibriOS/kolibrios
4474 lines
187 KiB
Plaintext
4474 lines
187 KiB
Plaintext
SYSTEM FUNCTIONS of OS Kolibri 0.6.5.0
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Number of the function is located in the register eax.
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The call of the system function is executed by "int 0x40" command.
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All registers except explicitly declared in the returned value,
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including eflags, are preserved.
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======================================================================
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============== Function 0 - define and draw the window. ==============
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======================================================================
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Defines an application window. Draws a frame of the window, header and
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working area. For skinned windows defines standard close and minimize
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buttons.
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Parameters:
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* eax = 0 - function number
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* ebx = [coordinate on axis x]*65536 + [size on axis x]
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* ecx = [coordinate on axis y]*65536 + [size on axis y]
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* edx = 0xXYRRGGBB, where:
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* Y = style of the window:
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* Y=0 - type I - fixed-size window
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* Y=1 - only define window area, draw nothing
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* Y=2 - type II - variable-size window
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* Y=3 - skinned window
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* other possible values (from 4 up to 15) are reserved,
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function call with such Y is ignored
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* RR, GG, BB = accordingly red, green, blue components of a color
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of the working area of the window (are ignored for style Y=2)
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* X = DCBA (bits)
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* A = 1 - window has caption; for style Y=3 caption string
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must be passed in edi, for other styles use
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subfunction 1 of function 71
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* B = 1 - coordinates of all graphics primitives are relative to
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window client area
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* C = 1 - don't fill working area on window draw
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* D = 0 - normal filling of the working area, 1 - gradient
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The following parameters are intended for windows
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of a type I and II, and ignored for styles Y=1,3:
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* esi = 0xXYRRGGBB - color of the header
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* RR, GG, BB define color
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* Y=0 - usual window, Y=1 - unmovable window
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* X defines a gradient of header: X=0 - no gradient,
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X=8 - usual gradient,
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for windows of a type II X=4 - negative gradient
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* other values of X and Y are reserved
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* edi = 0x00RRGGBB - color of the frame
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Returned value:
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* function does not return value
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Remarks:
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* Position and sizes of the window are installed by the first
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call of this function and are ignored at subsequent; to change
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position and/or sizes of already created window use function 67.
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* For windows with style Y=3 and caption (A=1) caption string is set
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by the first call of this function and is ignored at subsequent
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(strictly speaking, is ignored after a call to subfunction 2
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of function 12 - end redraw); to change caption of already created
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window use subfunction 1 of function 71.
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* If the window has appropriate styles, position and/or sizes can be
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changed by user. Current position and sizes can be obtained
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by function 9.
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* The window must fit on the screen. If the transferred
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coordinates and sizes do not satisfy to this condition,
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appropriate coordinate (or, probably, both) is considered as zero,
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and if it does not help too, the appropriate size
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(or, probably, both) is installed in a size of the screen.
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Further let us designate xpos,ypos,xsize,ysize - values passed
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in ebx,ecx. The coordinates are resulted concerning
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the left upper corner of the window, which, thus, is set as (0,0),
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coordinates of the right lower corner essence (xsize,ysize).
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* The sizes of the window are understood in sence of coordinates
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of the right lower corner. This concerns all other functions too.
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It means, that the real sizes are on 1 pixel more.
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* The window of type I looks as follows:
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* draw external frame of color indicated in edi, 1 pixel in width
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* draw header - rectangle with the left upper corner (1,1) and
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right lower (xsize-1,min(25,ysize)) color indicated in esi
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(taking a gradient into account)
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* if ysize>=26, fill the working area of the window -
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rectangle with the left upper corner (1,21) and right lower
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(xsize-1,ysize-1) (sizes (xsize-1)*(ysize-21)) with color
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indicated in edx (taking a gradient into account)
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* if A=1 and caption has been already set by subfunction 1
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of function 71, it is drawn in the corresponding place of header
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* The window of style Y=1 looks as follows:
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* completely defined by the application
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* The window of type II looks as follows:
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* draw external frame of width 1 pixel with the "shaded" color
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edi (all components of the color decrease twice)
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* draw intermediate frame of width 3 pixels with color edi
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* draw internal frame of width 1 pixel with the "shaded" color edi
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* draw header - rectangle with the left upper corner (4,4)
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and right lower (xsize-4,min(20,ysize)) color, indicated in esi
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(taking a gradient into account)
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* if ysize>=26, fill the working area of the window -
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rectangle with the left upper corner (5,20) and right lower
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(xsize-5,ysize-5) with color indicated in edx
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(taking a gradient into account)
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* if A=1 and caption has been already set by subfunction 1
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of function 71, it is drawn in the corresponding place of header
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* The skinned window looks as follows:
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* draw external frame of width 1 pixel
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with color 'outer' from the skin
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* draw intermediate frame of width 3 pixel
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with color 'frame' from the skin
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* draw internal frame of width 1 pixel
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with color 'inner' from the skin
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* draw header (on bitmaps from the skin) in a rectangle
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(0,0) - (xsize,_skinh-1)
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* if ysize>=26, fill the working area of the window -
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rectangle with the left upper corner (5,_skinh) and right lower
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(xsize-5,ysize-5) with color indicated in edx
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(taking a gradient into account)
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* define two standard buttons: close and minimize
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(see function 8)
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* if A=1 and edi contains (nonzero) pointer to caption string,
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it is drawn in place in header defined in the skin
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* value _skinh is accessible as the result of call
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subfunction 4 of function 48
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======================================================================
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================ Function 1 - put pixel in the window. ===============
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======================================================================
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Parameters:
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* eax = 1 - function number
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* ebx = x-coordinate (relative to the window)
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* ecx = y-coordinate (relative to the window)
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* edx = 0x00RRGGBB - color of a pixel
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edx = 0x01xxxxxx - invert color of a pixel
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(low 24 bits are ignored)
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Returned value:
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* function does not return value
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======================================================================
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============ Function 2 - get the code of the pressed key. ===========
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======================================================================
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Takes away the code of the pressed key from the buffer.
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Parameters:
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* eax = 2 - function number
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Returned value:
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* if the buffer is empty, function returns eax=1
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* if the buffer is not empty, function returns al=0,
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ah=code of the pressed key, high word of eax is zero
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* if there is "hotkey", function returns al=2,
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ah=scancode of the pressed key (0 for control keys),
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high word of eax contains a status of control keys at the moment
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of pressing a hotkey
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Remarks:
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* There is a common system buffer of the pressed keys
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by a size of 120 bytes, organized as queue.
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* There is one more common system buffer on 120 "hotkeys".
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* If the application with the inactive window calls this function,
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the buffer of the pressed keys is considered to be empty.
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* By default this function returns ASCII-codes; to switch
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to the scancodes mode (and back) use function 66.
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However, hotkeys are always notificated as scancodes.
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* To find out, what keys correspond to what codes, start
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the application keyascii and scancode.
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* Scancodes come directly from keyboard and are fixed;
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ASCII-codes turn out with usage of the conversion tables,
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which can be set by subfunction 2 of function 21
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and get by subfunction 2 of function 26.
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* As a consequence, ASCII-codes take into account current
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keyboard layout (rus/en) as opposed to scancodes.
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* This function notifies only about those hotkeys, which were
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defined by this thread by subfunction 4 of function 66.
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======================================================================
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==================== Function 3 - get system time. ===================
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======================================================================
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Parameters:
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* eax = 3 - function number
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Returned value:
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* eax = 0x00SSMMHH, where HH:MM:SS = Hours:Minutes:Seconds
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* each item is BCD-number, for example,
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for time 23:59:59 function returns 0x00595923
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Remarks:
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* See also subfunction 9 of function 26 - get time from
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the moment of start of the system; it is more convenient, because
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returns simply DWORD-value of the time counter.
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* System time can be set by function 22.
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======================================================================
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============ Function 4 - draw text string in the window. ============
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======================================================================
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Parameters:
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* eax = 4 - function number
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* ebx = [coordinate on axis x]*65536 + [coordinate on axis y]
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* ecx = 0xX0RRGGBB, where
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* RR, GG, BB specify text color
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* X=ABnn (bits):
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* nn specifies the used font: 0=system monospaced,
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1=system font of variable width
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* A=0 - output esi characters, A=1 - output ASCIIZ-string
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* B=1 - fill background with the color edi
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* edx = pointer to the beginning of the string
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* esi = for A=0 length of the string, must not exceed 255;
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for A=1 is ignored
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Returned value:
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* function does not return value
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Remarks:
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* First system font is read out at loading from the file char.mt,
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second - from char2.mt.
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* Both fonts have height 9 pixels, width of the monospaced font
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is equal to 6 pixels.
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======================================================================
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========================= Function 5 - delay. ========================
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======================================================================
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Delays execution of the program on the given time.
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Parameters:
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* eax = 5 - function number
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* ebx = time in the 1/100 of second
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Returned value:
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* function does not return value
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Remarks:
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* Passing ebx=0 does not transfer control to the next process
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and does not make any operations at all. If it is really required
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to transfer control to the next process (to complete a current
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time slice), use subfunction 1 of function 68.
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* At current implementation there will be an immediate return from
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the function, if the addition of ebx with current value of
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time counter will call 32-bit overflow.
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======================================================================
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============== Function 6 - read the file from ramdisk. ==============
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======================================================================
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Parameters:
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* eax = 6 - function number
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* ebx = pointer to the filename
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* ecx = number of start block, beginning from 1;
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ecx=0 - read from the beginning of the file (same as ecx=1)
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* edx = number of blocks to read;
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edx=0 - read one block (same as edx=1)
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* esi = pointer to memory area for the data
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Returned value:
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* eax = file size in bytes, if the file was successfully read
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* eax = -1, if the file was not found
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Remarks:
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* This function is out-of-date; function 70 allows
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to fulfil the same operations with the extended possibilities.
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* Block = 512 bytes.
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* For reading all file you can specify the certainly large value
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in edx, for example, edx = -1; but in this case be ready that
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the program will "fall", if the file will appear too large and can
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not be placed in the program memory.
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* The filename must be either in the format 8+3 characters
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(first 8 characters - name itself, last 3 - extension,
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the short names and extensions are supplemented with spaces),
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or in the format 8.3 characters "FILE.EXT"/"FILE.EX "
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(name no more than 8 characters, dot, extension 3 characters
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supplemented if necessary by spaces).
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The filename must be written with capital letters. The terminating
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character with code 0 is not necessary (not ASCIIZ-string).
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* This function does not support folders on the ramdisk.
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======================================================================
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=============== Function 7 - draw image in the window. ===============
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======================================================================
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Paramters:
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* eax = 7 - function number
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* ebx = pointer to the image in the format BBGGRRBBGGRR...
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* ecx = [size on axis x]*65536 + [size on axis y]
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* edx = [coordinate on axis x]*65536 + [coordinate on axis y]
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Returned value:
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* function does not return value
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Remarks:
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* Coordinates of the image are coordinates of the upper left corner
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of the image relative to the window.
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* Size of the image in bytes is 3*xsize*ysize.
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======================================================================
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=============== Function 8 - define/delete the button. ===============
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======================================================================
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Parameters for button definition:
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* eax = 8 - function number
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* ebx = [coordinate on axis x]*65536 + [size on axis x]
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* ecx = [coordinate on axis y]*65536 + [size on axis y]
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* edx = 0xXYnnnnnn, where:
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* nnnnnn = identifier of the button
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* high (31st) bit of edx is cleared
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* if 30th bit of edx is set - do not draw the button
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* if 29th bit of edx is set - do not draw a frame
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at pressing the button
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* esi = 0x00RRGGBB - color of the button
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Parameters for button deleting:
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* eax = 8 - function number
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* edx = 0x80nnnnnn, where nnnnnn - identifier of the button
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Returned value:
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* function does not return value
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Remarks:
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* Sizes of the button must be more than 0 and less than 0x8000.
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* For skinned windows definition of the window
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(call of 0th function) creates two standard buttons -
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for close of the window with identifier 1 and
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for minimize of the window with identifier 0xffff.
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* The creation of two buttons with same identifiers is admitted.
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* The button with the identifier 0xffff at pressing is interpreted
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by the system as the button of minimization, the system handles
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such pressing independently, not accessing to the application.
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In rest it is usual button.
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* Total number of buttons for all applications is limited to 4095.
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======================================================================
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============ Function 9 - information on execution thread. ===========
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======================================================================
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Parameters:
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* eax = 9 - function number
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* ebx = pointer to 1-Kb buffer
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* ecx = number of the slot of the thread
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ecx = -1 - get information on the current thread
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Returned value:
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* eax = maximum number of the slot of a thread
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* buffer pointed to by ebx contains the following information:
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* +0: dword: usage of the processor (how many time units
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per second leaves on execution of this thread)
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* +4: word: position of the window of thread in the window stack
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* +6: word: (has no relation to the specified thread)
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number of the thread slot, which window has in the window stack
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position ecx
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* +8: word: reserved
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* +10 = +0xA: 11 bytes: name of the process
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(name of corresponding executable file in the format 8+3)
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* +21 = +0x15: byte: reserved, this byte is not changed
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* +22 = +0x16: dword: address of the process in memory
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* +26 = +0x1A: dword: size of used memory - 1
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* +30 = +0x1E: dword: identifier (PID/TID)
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* +34 = +0x22: dword: coordinate of the thread window on axis x
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* +38 = +0x26: dword: coordinate of the thread window on axis y
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* +42 = +0x2A: dword: size of the thread window on axis x
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* +46 = +0x2E: dword: size of the thread window on axis y
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* +50 = +0x32: word: status of the thread slot:
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* 0 = thread is running
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* 1 = thread is suspended
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* 2 = thread is suspended while waiting for event
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* 3 = thread is terminating as a result of call to function -1
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or under duress as a result of call to subfunction 2
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of function 18 or termination of the system
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* 4 = thread is terminating as a result of exception
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* 5 = thread waits for event
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* 9 = requested slot is free, all other information on the slot
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is not meaningful
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* +52 = +0x34: word: reserved, this word is not changed
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* +54 = +0x36: dword: coordinate of the client area on axis x
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* +58 = +0x3A: dword: coordinate of the client area on axis y
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* +62 = +0x3E: dword: width of the client area
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* +66 = +0x42: dword: height of the client area
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* +70 = +0x46: byte: state of the window - bitfield
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* bit 0 (mask 1): window is maximized
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* bit 1 (mask 2): window is minimized to panel
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* bit 2 (mask 4): window is rolled up
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Remarks:
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* Slots are numbered starting from 1.
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* Returned value is not a total number of threads, because there
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can be free slots.
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* When process is starting, system automatically creates
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execution thread.
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* Function gives information on the thread. Each process has
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at least one thread. One process can create many threads,
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in this case each thread has its own slot and the fields
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+10, +22, +26 in these slots coincide.
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Applications have no common way to define whether two threads
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belong to one process.
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* The active window - window on top of the window stack -
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receives the messages on a keyboard input. For such window
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the position in the window stack coincides with returned value.
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* Slot 1 corresponds to special system thread, for which:
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* the window is in the bottom of the window stack, the fields
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+4 and +6 contain value 1
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* name of the process - "OS/IDLE" (supplemented by spaces)
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* address of the process in memory is 0, size of used memory is
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16 Mb (0x1000000)
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* PID=1
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* coordinates and sizes of the window and the client area are by
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convention set to 0
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* status of the slot is always 0 (running)
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* the execution time adds of time leaving on operations itself
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and idle time in waiting for interrupt (which can be got by call
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to subfunction 4 of function 18).
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* Beginning from slot 2, the normal applications are placed.
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* The normal applications are placed in memory at the address
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0x60400000 (kernel constant 'std_application_base_address').
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There is no intersection, as each process has its own page table.
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* At creation of the thread it is assigned the slot
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in the system table and identifier (Process/Thread IDentifier =
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PID/TID), which do not vary with time for given thread.
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After completion of the thread its slot can be anew used
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for another thread. The thread identifier can not be assigned
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to other thread even after completion of this thread.
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Identifiers, assigned to new threads, grow monotonously.
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* If the thread has not yet defined the window by call to
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function 0, the position and the sizes
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of its window are considered to be zero.
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* Coordinates of the client area are relative to the window.
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* At the moment only the part of the buffer by a size
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71 = 0x37 bytes is used. Nevertheless it is recommended to use
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1-Kb buffer for the future compatibility, in the future
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some fields can be added.
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======================================================================
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==================== Function 10 - wait for event. ===================
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======================================================================
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If the message queue is empty, waits for appearance of the message
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in queue. In this state thread does not consume CPU time.
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Then reads out the message from queue.
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Parameters:
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* eax = 10 - function number
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Returned value:
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* eax = event (see the list of events)
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Remarks:
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* Those events are taken into account only which enter into
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a mask set by function 40. By default it is
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redraw, key and button events.
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* To check, whether there is a message in queue, use function 11.
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To wait for no more than given time, use function 23.
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======================================================================
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=============== Function 11 - check for event, no wait. ==============
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======================================================================
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If the message queue contains event, function reads out
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and return it. If the queue is empty, function returns 0.
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Parameters:
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* eax = 11 - function number
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Returned value:
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* eax = 0 - message queue is empty
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* else eax = event (see the list of events)
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Remarks:
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* Those events are taken into account only, which enter into
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a mask set by function 40. By default it is
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redraw, key and button events.
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* To wait for event, use function 10.
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To wait for no more than given time, use function 23.
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======================================================================
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=============== Function 12 - begin/end window redraw. ===============
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======================================================================
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---------------- Subfunction 1 - begin window redraw. ----------------
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Parameters:
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* eax = 12 - function number
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* ebx = 1 - subfunction number
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Returned value:
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* function does not return value
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----------------- Subfunction 2 - end window redraw. -----------------
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Parameters:
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* eax = 12 - function number
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||
* ebx = 2 - subfunction number
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* Subfunction 1 deletes all buttons defined with
|
||
function 8, they must be defined again.
|
||
|
||
======================================================================
|
||
============ Function 13 - draw a rectangle in the window. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 13 - function number
|
||
* ebx = [coordinate on axis x]*65536 + [size on axis x]
|
||
* ecx = [coordinate on axis y]*65536 + [size on axis y]
|
||
* edx = color 0xRRGGBB or 0x80RRGGBB for gradient fill
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* Coordinates are understood as coordinates of the left upper corner
|
||
of a rectangle relative to the window.
|
||
|
||
======================================================================
|
||
=================== Function 14 - get screen size. ===================
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 14 - function number
|
||
Returned value:
|
||
* eax = [xsize]*65536 + [ysize], where
|
||
* xsize = x-coordinate of the right lower corner of the screen =
|
||
horizontal size - 1
|
||
* ysize = y-coordinate of the right lower corner of the screen =
|
||
vertical size - 1
|
||
Remarks:
|
||
* See also subfunction 5 of function 48 - get sizes of
|
||
working area of the screen.
|
||
|
||
======================================================================
|
||
== Function 15, subfunction 1 - set a size of the background image. ==
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 15 - function number
|
||
* ebx = 1 - subfunction number
|
||
* ecx = width of the image
|
||
* edx = height of the image
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* There is no checks for correctness. The setting of too large
|
||
values will result that the background will contain data abroad
|
||
of buffer for the background image. Buffer size = 0x160000-0x10,
|
||
that corresponds to maximum size 800*600. (800*600*3=0x15F900)
|
||
* For update of the screen (after completion of a series of commands
|
||
working with a background) call subfunction 3.
|
||
* There is a pair function for get size of the background image -
|
||
subfunction 1 of function 39.
|
||
|
||
======================================================================
|
||
=== Function 15, subfunction 2 - put pixel on the background image. ==
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 15 - function number
|
||
* ebx = 2 - subfunction number
|
||
* ecx = offset
|
||
* edx = color of a pixel 0xRRGGBB
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* Offset for a pixel with coordinates (x,y) is calculated as
|
||
(x+y*xsize)*3.
|
||
* If the given offset exceeds 0x160000-16 = 1.375 Mb - 16 bytes,
|
||
the call is ignored.
|
||
* For update of the screen (after completion of a series of commands
|
||
working with a background) call subfunction 3.
|
||
* There is a pair function for get pixel on the background image -
|
||
subfunction 2 of function 39.
|
||
|
||
======================================================================
|
||
=========== Function 15, subfunction 3 - redraw background. ==========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 15 - function number
|
||
* ebx = 3 - subfunction number
|
||
Returned value:
|
||
* function does not return value
|
||
|
||
======================================================================
|
||
== Function 15, subfunction 4 - set drawing mode for the background. =
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 15 - function number
|
||
* ebx = 4 - subfunction number
|
||
* ecx = drawing mode:
|
||
* 1 = tile
|
||
* 2 = stretch
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* For update of the screen (after completion of a series of commands
|
||
working with a background) call subfunction 3.
|
||
* There is a pair function for get drawing mode of the background -
|
||
subfunction 4 of function 39.
|
||
|
||
======================================================================
|
||
===================== Function 15, subfunction 5 =====================
|
||
============ Put block of pixels on the background image. ============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 15 - function number
|
||
* ebx = 5 - subfunction number
|
||
* ecx = pointer to the data in the format BBGGRRBBGGRR...
|
||
* edx = offset in data of the background image
|
||
* esi = size of data in bytes = 3 * number of pixels
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* If the block gets out abroad 0x160000-16 = 1.375 Mb - 16 bytes,
|
||
the call is ignored.
|
||
* Color of each pixel is stored as 3-bytes value BBGGRR.
|
||
* Pixels of the background image are written sequentially
|
||
from left to right, from up to down.
|
||
* Offset of pixel with coordinates (x,y) is (x+y*xsize)*3.
|
||
* For update of the screen (after completion of a series of commands
|
||
working with a background) call subfunction 3.
|
||
|
||
======================================================================
|
||
=============== Function 16 - save ramdisk on a floppy. ==============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 16 - function number
|
||
* ebx = 1 or ebx = 2 - on which floppy save
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - error
|
||
|
||
======================================================================
|
||
======= Function 17 - get the identifier of the pressed button. ======
|
||
======================================================================
|
||
Takes away the code of the pressed button from the buffer.
|
||
Parameters:
|
||
* eax = 17 - function number
|
||
Returned value:
|
||
* if the buffer is empty, function returns eax=1
|
||
* if the buffer is not empty, function returns al=0,
|
||
high 24 bits of eax contain button identifier (in particular, ah
|
||
contains low byte of the identifier; if all buttons have
|
||
the identifier less than 256, ah is enough to distinguish).
|
||
Remarks:
|
||
* "Buffer" keeps only one button, at pressing the new button the
|
||
information about old is lost.
|
||
* The call of this function by an application with inactive window
|
||
will return answer "buffer is empty".
|
||
|
||
======================================================================
|
||
============ Function 18, subfunction 1 - system shutdown. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 1 - subfunction number
|
||
Returned value:
|
||
* function always return eax = 0 as tag of success
|
||
Remarks:
|
||
* On the last step menu of exit from the system appears and waits
|
||
response of the user.
|
||
* See also subfunction 9, system shutdown with
|
||
the parameter to force the choice in the exit menu.
|
||
|
||
======================================================================
|
||
= Function 18, subfunction 2 - terminate process/thread by the slot. =
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 2 - subfunction number
|
||
* ecx = number of the slot of process/thread
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* It is impossible to terminate system thread OS/IDLE (with
|
||
number of the slot 1),
|
||
it is possible to terminate any normal process/thread.
|
||
* See also subfunction 18 - terminate
|
||
process/thread by the identifier.
|
||
|
||
======================================================================
|
||
===================== Function 18, subfunction 3 =====================
|
||
============= Make active the window of the given thread. ============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 3 - subfunction number
|
||
* ecx = number of the thread slot
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* If correct, but nonexistent slot is given,
|
||
some window is made active.
|
||
* To find out, which window is active, use subfunction 7.
|
||
|
||
======================================================================
|
||
===================== Function 18, subfunction 4 =====================
|
||
=========== Get counter of idle time units per one second. ===========
|
||
======================================================================
|
||
Idle time units are units, in which the processor stands idle
|
||
in waiting for interrupt (in the command 'hlt').
|
||
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 4 - subfunction number
|
||
Returned value:
|
||
* eax = value of the counter of idle time units per one second
|
||
|
||
======================================================================
|
||
========== Function 18, subfunction 5 - get CPU clock rate. ==========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 5 - subfunction number
|
||
Returned value:
|
||
* eax = clock rate (modulo 2^32 clock ticks = 4GHz)
|
||
|
||
======================================================================
|
||
Function 18, subfunction 6 - save ramdisk to the file on hard drive.
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 6 - subfunction number
|
||
* ecx = pointer to the full path to file
|
||
(for example, "/hd0/1/kolibri/kolibri.img")
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* else eax = error code of the file system
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:
|
||
* All folders in the given path must exist, otherwise function
|
||
returns value 5, "file not found".
|
||
|
||
======================================================================
|
||
=========== Function 18, subfunction 7 - get active window. ==========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 7 - subfunction number
|
||
Returned value:
|
||
* eax = number of the active window
|
||
(number of the slot of the thread with active window)
|
||
Remarks:
|
||
* Active window is at the top of the window stack and receives
|
||
messages on all keyboard input.
|
||
* To make a window active, use subfunction 3.
|
||
|
||
======================================================================
|
||
== Function 18, subfunction 8 - disable/enable the internal speaker. =
|
||
======================================================================
|
||
If speaker sound is disabled, all calls to subfunction 55 of
|
||
function 55 are ignored. If speaker sound is enabled,
|
||
they are routed on builtin speaker.
|
||
|
||
------------------- Subsubfunction 1 - get status. -------------------
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 8 - subfunction number
|
||
* ecx = 1 - number of the subsubfunction
|
||
Returned value:
|
||
* eax = 0 - speaker sound is enabled; 1 - disabled
|
||
|
||
----------------- Subsubfunction 2 - toggle status. ------------------
|
||
Toggles states of disable/enable.
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 8 - subfunction number
|
||
* ecx = 2 - number of the subsubfunction
|
||
Returned value:
|
||
* function does not return value
|
||
|
||
======================================================================
|
||
== Function 18, subfunction 9 - system shutdown with the parameter. ==
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 9 - subfunction number
|
||
* ecx = parameter:
|
||
* 1 = on the last step of shutdown save ramdisk on a floppy and
|
||
then show the exit menu and request further operations
|
||
from the user
|
||
* 2 = turn off computer
|
||
* 3 = reboot computer
|
||
* 4 = restart the kernel from the file 'kernel.mnt' on ramdisk
|
||
Returned value:
|
||
* at incorrect ecx the registers do not change (i.e. eax=18)
|
||
* by correct call function always returns eax=0
|
||
as the tag of success
|
||
Remarks:
|
||
* Do not rely on returned value by incorrect call, it can be
|
||
changed in future versions of the kernel.
|
||
* It is possible to use subfunction 1, that on the last step
|
||
the user makes choice himself.
|
||
* It is not recommended to use value ecx=1 (to not irritate the user
|
||
with excessive questions); to save ramdisk on a floppy use
|
||
function 16 (which admits specification, on which floppy to
|
||
write), and to shutdown with the exit menu use already mentioned
|
||
subfunction 1.
|
||
|
||
======================================================================
|
||
===== Function 18, subfunction 10 - minimize application window. =====
|
||
======================================================================
|
||
Minimizes the own window.
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 10 - subfunction number
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* The minimized window from the point of view of function 9
|
||
keeps position and sizes.
|
||
* Restoring of an application window occurs at its activation by
|
||
subfunction 3.
|
||
* Usually there is no necessity to minimize/restire a window
|
||
obviously: minimization of a window is carried out by the system
|
||
at pressing the minimization button (for skinned windows
|
||
it is defined automatically by function 0,
|
||
for other windows it can be defined manually by function 8),
|
||
restore of a window is done by the application '@panel'.
|
||
|
||
======================================================================
|
||
Function 18, subfunction 11 - get information on the disk subsystem.
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 11 - subfunction number
|
||
* ecx = type of the table:
|
||
* 1 = short version, 10 bytes
|
||
* 2 = full version, 65536 bytes
|
||
* edx = pointer to the buffer (in the application) for the table
|
||
Returned value:
|
||
* function does not return value
|
||
Format of the table: short version:
|
||
* +0: byte: information about FDD's (drives for floppies),
|
||
AAAABBBB, where AAAA gives type of the first drive, BBBB -
|
||
of the second regarding to the following list:
|
||
* 0 = there is no drive
|
||
* 1 = 360Kb, 5.25''
|
||
* 2 = 1.2Mb, 5.25''
|
||
* 3 = 720Kb, 3.5''
|
||
* 4 = 1.44Mb, 3.5''
|
||
* 5 = 2.88Mb, 3.5'' (such drives are not used anymore)
|
||
For example, for the standard configuration from one 1.44-drive
|
||
here will be 40h, and for the case 1.2Mb on A: and 1.44Mb on B:
|
||
the value is 24h.
|
||
* +1: byte: information about hard disks and CD-drives, AABBCCDD,
|
||
where AA corresponds to the controller IDE0, ..., DD - IDE3:
|
||
* 0 = device is absent
|
||
* 1 = hard drive
|
||
* 2 = CD-drive
|
||
For example, in the case HD on IDE0 and CD on IDE2
|
||
this field contains 48h.
|
||
* +2: 4 db: number of the retrieved partitions on hard disks
|
||
at accordingly IDE0,...,IDE3.
|
||
If the hard disk on IDEx is absent, appropriate byte is zero,
|
||
otherwise it shows number of the recognized partitions, which
|
||
can be not presented (if the drive is not formatted or if
|
||
the file system is not supported). Current version of the kernel
|
||
supports only FAT16, FAT32 and NTFS for hard disks.
|
||
* +6: 4 db: reserved
|
||
Format of the table: full version:
|
||
* +0: 10 db: same as for the short version
|
||
* +10: 100 db: data for the first partition
|
||
* +110: 100 db: data for the second partition
|
||
* ...
|
||
* +10+100*(n-1): 100 db: data for the last partition
|
||
The partitions are located as follows: at first sequentially all
|
||
recoginzed partitions on HD on IDE0 (if present),
|
||
then on HD on IDE1 (if present) and so on up to IDE3.
|
||
Format of the information about partition
|
||
(at moment only FAT is supported):
|
||
* +0: dword: first physical sector of the partition
|
||
* +4: dword: last physical sector of the partition
|
||
(belongs to the partition)
|
||
* +8: byte: file system type:
|
||
16=FAT16, 32=FAT32, 1=NTFS
|
||
* other data are dependent on file system, are modified with
|
||
kernel modifications and therefore are not described
|
||
Remarks:
|
||
* The short table can be used for obtaining the information about
|
||
available devices.
|
||
|
||
======================================================================
|
||
========== Function 18, subfunction 13 - get kernel version. =========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 13 - subfunction number
|
||
* ecx = pointer to the buffer (not less than 16 bytes), where
|
||
the information will be placed
|
||
Returned value:
|
||
* function does not return value
|
||
Structure of the buffer:
|
||
db a,b,c,d for version a.b.c.d
|
||
db UID_xxx: one of UID_NONE=0, UID_MENUET=1, UID_KOLIBRI=2
|
||
db 'name',0 - ASCIIZ-string with the name
|
||
For Kolibri 0.6.5.0 kernel:
|
||
db 0,6,5,0
|
||
db 2
|
||
db 'Kolibri',0
|
||
|
||
======================================================================
|
||
======= Function 18, subfunction 14 - wait for screen retrace. =======
|
||
======================================================================
|
||
Waits for the beginning of retrace of the scanning ray of the screen
|
||
monitor.
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 14 - subfunction number
|
||
Returned value:
|
||
* eax = 0 as the tag of success
|
||
Remarks:
|
||
* Function is intended only for active high-efficiency graphics
|
||
applications; is used for smooth output of a graphics.
|
||
|
||
======================================================================
|
||
== Function 18, subfunction 15 - center mouse cursor on the screen. ==
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 15 - subfunction number
|
||
Returned value:
|
||
* eax = 0 as the tag of success
|
||
|
||
======================================================================
|
||
========= Function 18, subfunction 16 - get size of free RAM. ========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 16 - subfunction number
|
||
Returned value:
|
||
* eax = size of free memory in kilobytes
|
||
|
||
======================================================================
|
||
======== Function 18, subfunction 17 - get full amount of RAM. =======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 17 - subfunction number
|
||
Returned value:
|
||
* eax = total size of existing memory in kilobytes
|
||
|
||
======================================================================
|
||
===================== Function 18, subfunction 18 ====================
|
||
============= Terminate process/thread by the identifier. ============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 18 - subfunction number
|
||
* ecx = identifer of process/thread (PID/TID)
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = -1 - error (process is not found or is system)
|
||
Remarks:
|
||
* It is impossible to terminate system thread OS/IDLE (identifier
|
||
1), it is possible to terminate any normal process/thread.
|
||
* See also subfunction 2 - terminate
|
||
process/thread by given slot.
|
||
|
||
======================================================================
|
||
======== Function 18, subfunction 19 - get/set mouse features. =======
|
||
======================================================================
|
||
|
||
---------------- Subsubfunction 0 - get mouse speed. -----------------
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 19 - subfunction number
|
||
* ecx = 0 - subsubfunction number
|
||
Returned value:
|
||
* eax = current mouse speed
|
||
|
||
---------------- Subsubfunction 1 - set mouse speed. -----------------
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 19 - subfunction number
|
||
* ecx = 1 - subsubfunction number
|
||
* edx = new value for speed
|
||
Returned value:
|
||
* function does not return value
|
||
|
||
---------------- Subsubfunction 2 - get mouse delay. -----------------
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 19 - subfunction number
|
||
* ecx = 2 - subsubfunction number
|
||
Returned value:
|
||
* eax = current mouse delay
|
||
|
||
---------------- Subsubfunction 3 - set mouse delay. -----------------
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 19 - subfunction number
|
||
* ecx = 3 - subsubfunction number
|
||
* edx = new value for mouse delay
|
||
Returned value:
|
||
* function does not return value
|
||
|
||
----------- Subsubfunction 4 - set mouse pointer position. -----------
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 19 - subfunction number
|
||
* ecx = 4 - subsubfunction number
|
||
* edx = [coordinate on axis x]*65536 + [coordinate on axis y]
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* It is recommended to set speed of the mouse (in subsubfunction 1)
|
||
from 1 up to 9. The installed value is not inspected by the kernel
|
||
code, so set it carefully, at incorrect value the cursor
|
||
can "freeze". Speed of the mouse can be regulated through the
|
||
application SETUP.
|
||
* Recommended delay of the mouse (in subsubfunction 3) = 10. Lower
|
||
value is not handled by COM mice. At the very large values the
|
||
movement of the mouse on 1 pixel is impossible and the cursor will
|
||
jump on the value of installed speed (subsubfunction 1). The
|
||
installed value is not inspected by the kernel code.
|
||
Mouse delay can be regulated through the application SETUP.
|
||
* The subsubfunction 4 does not check the passed value. Before
|
||
its call find out current screen resolution (with function 14)
|
||
and check that the value of position is inside the limits of the
|
||
screen.
|
||
|
||
======================================================================
|
||
======== Function 18, subfunction 20 - get information on RAM. =======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 18 - function number
|
||
* ebx = 20 - subfunction number
|
||
* ecx = pointer to the buffer for information (36 bytes)
|
||
Returned value:
|
||
* eax = total size of existing RAM in pages
|
||
or -1 if error has occured
|
||
* buffer pointed to by ecx contains the following information:
|
||
* +0: dword: total size of existing RAM in pages
|
||
* +4: dword: size of free RAM in pages
|
||
* +8: dword: number of page faults (exceptions #PF)
|
||
in applications
|
||
* +12: dword: size of kernel heap in bytes
|
||
* +16: dword: free in kernel heap in bytes
|
||
* +20: dword: total number of memory blocks in kernel heap
|
||
* +24: dword: number of free memory blocks in kernel heap
|
||
* +28: dword: size of maximum free block in kernel heap
|
||
(reserved)
|
||
* +32: dword: size of maximum allocated block in kernel heap
|
||
(reserved)
|
||
|
||
======================================================================
|
||
==================== Function 20 - MIDI interface. ===================
|
||
======================================================================
|
||
|
||
----------------------- Subfunction 1 - reset ------------------------
|
||
Parameters:
|
||
* eax = 20 - function number
|
||
* ebx = 1 - subfunction number
|
||
|
||
-------------------- Subfunction 2 - output byte ---------------------
|
||
Parameters:
|
||
* eax = 20 - function number
|
||
* ebx = 2 - subfunction number
|
||
* cl = byte for output
|
||
Returned value (is the same for both subfunctions):
|
||
* eax = 0 - success
|
||
* eax = 1 - base port is not defined
|
||
Remarks:
|
||
* Previously the base port must be defined by
|
||
subfunction 1 of function 21.
|
||
|
||
======================================================================
|
||
======== Function 21, subfunction 1 - set MPU MIDI base port. ========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 1 - subfunction number
|
||
* ecx = number of base port
|
||
Returned value
|
||
* eax = 0 - success
|
||
* eax = -1 - erratic number of a port
|
||
Remarks:
|
||
* Number of a port must satisfy to conditions 0x100<=ecx<=0xFFFF.
|
||
* The installation of base is necessary for function 20.
|
||
* To get base port use subfunction 1 of function 26.
|
||
|
||
======================================================================
|
||
========== Function 21, subfunction 2 - set keyboard layout. =========
|
||
======================================================================
|
||
Keyboard layout is used to convert keyboard scancodes to ASCII-codes,
|
||
which will be read by function 2.
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 2 - subfunction number
|
||
* ecx = which layout to set:
|
||
* 1 = normal layout
|
||
* 2 = layout at pressed Shift
|
||
* 3 = layout at pressed Alt
|
||
* edx = pointer to layout - table of length 128 bytes
|
||
Or:
|
||
* ecx = 9
|
||
* dx = country identifier (1=eng, 2=fi, 3=ger, 4=rus)
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - incorrect parameter
|
||
Remarks:
|
||
* If Alt is pressed, the layout with Alt is used;
|
||
if Alt is not pressed, but Shift is pressed,
|
||
the layout with Shift is used;
|
||
if Alt and Shift are not pressed, but Ctrl is pressed, the normal
|
||
layout is used and then from the code is subtracted 0x60;
|
||
if no control key is pressed, the normal layout is used.
|
||
* To get layout and country identifier use
|
||
subfunction 2 of function 26.
|
||
* Country identifier is global system variable, which is not used
|
||
by the kernel itself; however the application '@panel' displays
|
||
the corresponding icon.
|
||
* The application @panel switches layouts on user request.
|
||
|
||
======================================================================
|
||
============== Function 21, subfunction 3 - set CD base. =============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 3 - subfunction number
|
||
* ecx = CD base: 1=IDE0, 2=IDE1, 3=IDE2, 4=IDE3
|
||
Returned value:
|
||
* eax = 0
|
||
Remarks:
|
||
* CD base is used by function 24.
|
||
* To get CD base use subfunction 3 of function 26.
|
||
|
||
======================================================================
|
||
====== Function 21, subfunction 4 - set Sound Blaster base port. =====
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 4 - subfunction number
|
||
* ecx = number of the base port
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = -1 - erratic port number
|
||
Remarks:
|
||
* Number of the port must satisfy to conditions 0x100<=ecx<=0xFFFF.
|
||
* The installation of the base is necessary for
|
||
functions 25, 28, 55.
|
||
* To get base port use subfunction 4 of function 26.
|
||
|
||
======================================================================
|
||
========== Function 21, subfunction 5 - set system language. =========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 5 - subfunction number
|
||
* ecx = system language (1=eng, 2=fi, 3=ger, 4=rus)
|
||
Returned value:
|
||
* eax = 0
|
||
Remarks:
|
||
* System language is global system variable and is not used
|
||
by the kernel itself, however application @panel draws the
|
||
appropriate icon.
|
||
* Function does not check for correctness, as the kernel does not
|
||
use this variable.
|
||
* To get system language use subfunction 5 of function 26.
|
||
|
||
======================================================================
|
||
============== Function 21, subfunction 7 - set HD base. =============
|
||
======================================================================
|
||
The HD base defines hard disk to write with usage of obsolete
|
||
syntax /HD in obsolete function 58; at usage of modern syntax
|
||
/HD0,/HD1,/HD2,/HD3 base is set automatically.
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 7 - subfunction number
|
||
* ecx = HD base: 1=IDE0, 2=IDE1, 3=IDE2, 4=IDE3
|
||
Returned value:
|
||
* eax = 0
|
||
Remarks:
|
||
* Any application at any time can change the base.
|
||
* Do not change base, when any application works with hard disk.
|
||
If you do not want system bugs.
|
||
* To get HD base use subfunction 7 of function 26.
|
||
* It is also necessary to define used partition of hard disk by
|
||
subfunction 8.
|
||
|
||
======================================================================
|
||
========= Function 21, subfunction 8 - set used HD partition. ========
|
||
======================================================================
|
||
The HD partition defines partition of the hard disk to write with
|
||
usage of obsolete syntax /HD and obsolete function 58;
|
||
at usage of functions 58 and 70 and modern syntax /HD0,/HD1,/HD2,/HD3
|
||
base and partition are set automatically.
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 8 - subfunction number
|
||
* ecx = HD partition (beginning from 1)
|
||
Return value:
|
||
* eax = 0
|
||
Remarks:
|
||
* Any application at any time can change partition.
|
||
* Do not change partition when any application works with hard disk.
|
||
If you do not want system bugs.
|
||
* To get used partition use subfunction 8 of function 26.
|
||
* There is no correctness checks.
|
||
* To get the number of partitions of a hard disk use
|
||
subfunction 11 of function 18.
|
||
* It is also necessary to define used HD base by subfunction 7.
|
||
|
||
======================================================================
|
||
======== Function 21, subfunction 10 - set sound DMA channel. ========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 10 - subfunction number
|
||
* ecx = number of channel (from 0 up to 3 inclusively)
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = -1 - incorrect channel number
|
||
Remarks:
|
||
* Number of DMA channel is used in subfunction 1 of function 55.
|
||
* To get sound DMA channel use subfunction 10 of function 26.
|
||
|
||
======================================================================
|
||
Function 21, subfunction 11 - enable/disable low-level access to HD.
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 11 - subfunction number
|
||
* ecx = 0/1 - disable/enable
|
||
Returned value:
|
||
* eax = 0
|
||
Remarks:
|
||
* Is used in LBA-read (subfunction 8 of function 58).
|
||
* The current implementation uses only low bit of ecx.
|
||
* To get current status use subfunction 11 of function 26.
|
||
|
||
======================================================================
|
||
Function 21, subfunction 12 - enable/disable low-level access to PCI.
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 12 - subfunction number
|
||
* ecx = 0/1 - disable/enable
|
||
Returned value:
|
||
* eax = 0
|
||
Remarks:
|
||
* Is used in operations with PCI bus (function 62).
|
||
* The current implementation uses only low bit of ecx.
|
||
* To get current status use subfunction 12 of function 26.
|
||
|
||
======================================================================
|
||
============ Function 21, subfunction 13, subsubfunction 1 ===========
|
||
======== Initialize + get information on the driver vmode.mdr. =======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 13 - subfunction number
|
||
* ecx = 1 - number of the driver function
|
||
* edx = pointer to 512-bytes buffer
|
||
Returned value:
|
||
* if driver is not loaded
|
||
(never happens in the current implementation):
|
||
* eax = -1
|
||
* ebx, ecx destroyed
|
||
* if driver is loaded:
|
||
* eax = 'MDAZ' (in fasm style, that is 'M' - low byte, 'Z' - high)
|
||
- signature
|
||
* ebx = current frequency of the scanning (in Hz)
|
||
* ecx destroyed
|
||
* buffer pointed to by edx is filled
|
||
Format of the buffer:
|
||
* +0: 32*byte: driver name, "Trans VideoDriver"
|
||
(without quotes, supplemented by spaces)
|
||
* +32 = +0x20: dword: driver version (version x.y is encoded as
|
||
y*65536+x), for the current implementation is 1 (1.0)
|
||
* +36 = +0x24: 7*dword: reserved (0 in the current implementation)
|
||
* +64 = +0x40: 32*word: list of supported videomodes (each word
|
||
is number of a videomode, after list itself there are zeroes)
|
||
* +128 = +0x80: 32*(5*word): list of supported frequences of the
|
||
scannings for videomodes: for each videomode listed in the
|
||
previous field up to 5 supported frequences are given
|
||
(unused positions contain zeroes)
|
||
Remarks:
|
||
* Function initializes the driver (if it is not initialized yet)
|
||
and must be called first, before others (otherwise they will do
|
||
nothing and return -1).
|
||
* The current implementation supports only one frequency
|
||
of the scanning on videomode.
|
||
|
||
======================================================================
|
||
============ Function 21, subfunction 13, subsubfunction 2 ===========
|
||
================ Get information on current videomode. ===============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 13 - subfunction number
|
||
* ecx = 2 - number of the driver function
|
||
Returned value:
|
||
* eax = -1 - driver is not loaded or not initialized;
|
||
ebx,ecx are destroyed
|
||
* eax = [width]*65536 + [height]
|
||
* ebx = frequency of the vertical scanning (in Hz)
|
||
* ecx = number of current videomode
|
||
Remarks:
|
||
* Driver must be initialized by call to
|
||
driver function 1.
|
||
* If only screen sizes are required, it is more expedient to use
|
||
function 14 taking into account that it
|
||
returns sizes on 1 less.
|
||
|
||
======================================================================
|
||
=== Function 21, subfunction 13, subsubfunction 3 - set videomode. ===
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 13 - subfunction number
|
||
* ecx = 3 - number of the driver function
|
||
* edx = [scanning frequency]*65536 + [videomode number]
|
||
Returned value:
|
||
* eax = -1 - driver is not loaded, not initialized or
|
||
an error has occured
|
||
* eax = 0 - success
|
||
* ebx, ecx destroyed
|
||
Remarks:
|
||
* Driver must be initialized by driver function 1.
|
||
* The videomode number and frequency must be in the table
|
||
returned by driver function 1.
|
||
|
||
======================================================================
|
||
============ Function 21, subfunction 13, subsubfunction 4 ===========
|
||
================== Return to the initial videomode. ==================
|
||
======================================================================
|
||
Returns the screen to the videomode set at system boot.
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 13 - subfunction number
|
||
* ecx = 4 - number of the driver function
|
||
Returned value:
|
||
* eax = -1 - driver is not loaded or not initialized
|
||
* eax = 0 - success
|
||
* ebx, ecx destroyed
|
||
Remarks:
|
||
* Driver must be initialized by call to driver function 1.
|
||
|
||
======================================================================
|
||
============ Function 21, subfunction 13, subsubfunction 5 ===========
|
||
===== Increase/decrease the size of the visible area of monitor. =====
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 21 - function number
|
||
* ebx = 13 - subfunction number
|
||
* ecx = 5 - number of the driver function
|
||
* edx = 0/1 - decrease/increase horizontal size on 1 position
|
||
* edx = 2/3 - is not supported in the current implementation;
|
||
is planned as decrease/increase vertical size on 1 position
|
||
Returned value:
|
||
* eax = -1 - driver is not loaded or not initialized
|
||
* eax = 0 - success
|
||
* ebx, ecx destroyed
|
||
Remarks:
|
||
* Driver must be initialized by call to driver function 1.
|
||
* Function influences only the physical size of the screen image;
|
||
the logical size (number of pixels) does not change.
|
||
|
||
======================================================================
|
||
================= Function 22 - set system date/time. ================
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 22 - function number
|
||
* ebx = 0 - set time
|
||
* ecx = 0x00SSMMHH - time in the binary-decimal code (BCD):
|
||
* HH=hour 00..23
|
||
* MM=minute 00..59
|
||
* SS=second 00..59
|
||
* ebx = 1 - set date
|
||
* ecx = 0x00DDMMYY - date in the binary-decimal code (BCD):
|
||
* DD=day 01..31
|
||
* MM=month 01..12
|
||
* YY=year 00..99
|
||
* ebx = 2 - set day of week
|
||
* ecx = 1 for Sunday, ..., 7 for Saturday
|
||
* ebx = 3 - set alarm clock
|
||
* ecx = 0x00SSMMHH
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - incorrect parameter
|
||
* eax = 2 - CMOS-battery was unloaded
|
||
Remarks:
|
||
* Value of installation of day of week seems to be doubtful,
|
||
as it a little where is used
|
||
(day of week can be calculated by date).
|
||
* Alarm clock can be set on operation in the given time every day.
|
||
But there is no existing system function to disable it.
|
||
* Operation of alarm clock consists in generation IRQ8.
|
||
* Generally CMOS supports for alarm clock set of value 0xFF
|
||
as one of parameters and it means that the appropriate parameter
|
||
is ignored. But current implementation does not allow this
|
||
(will return 1).
|
||
* Alarm clock is a global system resource; the set of
|
||
an alarm clock cancels automatically the previous set.
|
||
However, at moment no program uses it.
|
||
|
||
======================================================================
|
||
============= Function 23 - wait for event with timeout. =============
|
||
======================================================================
|
||
If the message queue is empty, waits for new message in the queue,
|
||
but no more than given time. Then reads out a message from the queue.
|
||
|
||
Parameters:
|
||
* eax = 23 - function number
|
||
* ebx = timeout (in 1/100 of second)
|
||
Returned value:
|
||
* eax = 0 - the message queue is empty
|
||
* otherwise eax = event (see the list of events)
|
||
Remarks:
|
||
* Only those events are taken into account, which enter into
|
||
the mask set by function 40. By default it is
|
||
redraw, key and button events.
|
||
* To check for presence of a message in the queue use function 11.
|
||
To wait without timeout use function 10.
|
||
* Transmission ebx=0 results in immediate returning eax=0.
|
||
* Current implementation returns immediately with eax=0,
|
||
if the addition of ebx with the current value of time counter
|
||
makes 32-bit overflow.
|
||
|
||
======================================================================
|
||
======== Function 24, subfunction 1 - begin to play CD-audio. ========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 24 - function number
|
||
* ebx = 1 - subfunction number
|
||
* ecx = 0x00FRSSMM, where
|
||
* MM = starting minute
|
||
* SS = starting second
|
||
* FR = starting frame
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - CD base is not defined
|
||
Remarks:
|
||
* Previously CD base must be defined by the call to
|
||
subfunction 3 of function 21.
|
||
* One second includes 75 frames, one minute includes 60 seconds.
|
||
* The function is asynchronous (returns control, when play begins).
|
||
|
||
======================================================================
|
||
======= Function 24, subfunction 2 - get information on tracks. ======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 24 - function number
|
||
* ebx = 2 - subfunction number
|
||
* ecx = pointer to the buffer for the table
|
||
(maximum 8*64h+4 bytes=100 tracks)
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - CD base is not defined
|
||
Remarks:
|
||
* The format of the table with tracks information is the same as
|
||
for ATAPI-CD command 43h (READ TOC), usual table (subcommand 00h).
|
||
Function returns addresses in MSF.
|
||
* Previously CD base port must be set by call to
|
||
subfunction 3 of function 21.
|
||
* Function returns information only about no more than 100
|
||
first tracks. In most cases it is enough.
|
||
|
||
======================================================================
|
||
========== Function 24, subfunction 3 - stop play CD-audio. ==========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 24 - function number
|
||
* ebx = 1 - subfunction number
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - CD base is not defined
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:
|
||
* Previously CD base port must be defined by call to
|
||
subfunction 3 of function 21.
|
||
|
||
======================================================================
|
||
=================== Function 25 - set SBPro volume. ==================
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 25 - function number
|
||
* ebx = what to set:
|
||
* 1 - set common volume
|
||
* 2 - set CD-audio volume
|
||
* cl = volume level: high 4 bits for the left column,
|
||
low 4 bits for the right one
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - SB base is not defined
|
||
* eax = 2 - incorrect subfunction
|
||
Remarks:
|
||
* Previously SB base port must be defined by
|
||
subfunction 4 of function 21.
|
||
* See also function 28 which sets
|
||
volume for the later standard SB16.
|
||
|
||
======================================================================
|
||
======== Function 26, subfunction 1 - get MPU MIDI base port. ========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 26 - function number
|
||
* ebx = 1 - subfunction number
|
||
Returned value:
|
||
* eax = port number
|
||
Parameters:
|
||
* To set base port use subfunction 1 of function 21.
|
||
|
||
======================================================================
|
||
========== Function 26, subfunction 2 - get keyboard layout. =========
|
||
======================================================================
|
||
The keyboard layout is used to convert keyboard scancodes to
|
||
ASCII-codes for function 2.
|
||
Parameters:
|
||
* eax = 26 - function number
|
||
* ebx = 2 - subfunction number
|
||
* ecx = what layout to get:
|
||
* 1 = normal layout
|
||
* 2 = layout with pressed Shift
|
||
* 3 = layout with pressed Alt
|
||
* edx = pointer to the 128-bytes buffer, where the layout will be
|
||
copied
|
||
Returned value:
|
||
* function does not return value
|
||
Or:
|
||
* eax = 26 - function number
|
||
* ebx = 2 - subfunction number
|
||
* ecx = 9
|
||
Returned value:
|
||
* eax = country identifier (1=eng, 2=fi, 3=ger, 4=rus)
|
||
Remarks:
|
||
* If Alt is pressed, the layout with Alt is used;
|
||
if Alt is not pressed, but Shift is pressed,
|
||
the layout with Shift is used;
|
||
if Alt and Shift are not pressed, but Ctrl is pressed, the normal
|
||
layout is used and then from the code is subtracted 0x60;
|
||
if no control key is pressed, the normal layout is used.
|
||
* To set layout and country identifier use
|
||
subfunction 2 of function 21.
|
||
* Country identifier is global system variable, which is not used
|
||
by the kernel itself; however the application '@panel' displays
|
||
the corresponding icon (using this function).
|
||
* The application @panel switches layouts on user request.
|
||
|
||
======================================================================
|
||
============== Function 26, subfunction 3 - get CD base. =============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 26 - function number
|
||
* ebx = 3 - subfunction number
|
||
Returned value:
|
||
* eax = CD base: 1=IDE0, 2=IDE1, 3=IDE2, 4=IDE3
|
||
Remarks:
|
||
* CD base is used by function 24.
|
||
* To set CD base use subfunction 3 of function 21.
|
||
|
||
======================================================================
|
||
====== Function 26, subfunction 4 - get Sound Blaster base port. =====
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 26 - function number
|
||
* ebx = 4 - subfunction number
|
||
Returned value:
|
||
* eax = base port number
|
||
Remarks:
|
||
* Bae port is used by functions 25, 55.
|
||
* To set base port use subfunction 4 of function 21.
|
||
|
||
======================================================================
|
||
========== Function 26, subfunction 5 - get system language. =========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 26 - function number
|
||
* ebx = 5 - subfunction number
|
||
Returned value:
|
||
* eax = system language (1=eng, 2=fi, 3=ger, 4=rus)
|
||
Remarks:
|
||
* System language is global system variable and is not used
|
||
by the kernel itself, however application @panel draws the
|
||
appropriate icon (using this function).
|
||
* To set system language use subfunction 5 of function 21.
|
||
|
||
======================================================================
|
||
============== Function 26, subfunction 7 - get HD base. =============
|
||
======================================================================
|
||
The HD base defines hard disk to write with usage of obsolete
|
||
syntax /HD in obsolete function 58; at usage of modern syntax
|
||
/HD0,/HD1,/HD2,/HD3 base is set automatically.
|
||
Parameters:
|
||
* eax = 26 - function number
|
||
* ebx = 7 - subfunction number
|
||
Returned value:
|
||
* eax = HD base: 1=IDE0, 2=IDE1, 3=IDE2, 4=IDE3
|
||
Remarks:
|
||
* Any application in any time can change HD base.
|
||
* To set base use subfunction 7 of function 21.
|
||
* To get used partition of hard disk use subfunction 8.
|
||
|
||
======================================================================
|
||
========= Function 26, subfunction 8 - get used HD partition. ========
|
||
======================================================================
|
||
The HD partition defines partition of the hard disk to write with
|
||
usage of obsolete syntax /HD in obsolete function 58;
|
||
at usage of functions 58 and 70 and modern syntax /HD0,/HD1,/HD2,/HD3
|
||
base and partition are set automatically.
|
||
Parameters:
|
||
* eax = 26 - function number
|
||
* ebx = 8 - subfunction number
|
||
Returned value:
|
||
* eax = HD partition (beginning from 1)
|
||
Remarks:
|
||
* Any application in any time can change partition.
|
||
* To set partition use subfunction 8 of function 21.
|
||
* To get number of partitions on a hard disk use
|
||
subfunction 11 of function 18.
|
||
* To get base of used hard disk, use subfunction 7.
|
||
|
||
======================================================================
|
||
=== Function 26, subfunction 9 - get the value of the time counter. ==
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 26 - function number
|
||
* ebx = 9 - subfunction number
|
||
Returned value:
|
||
* eax = number of 1/100s of second, past from the system boot time
|
||
Remarks:
|
||
* Counter takes modulo 2^32, that correspond to a little more
|
||
than 497 days.
|
||
* To get system time use function 3.
|
||
|
||
======================================================================
|
||
======== Function 26, subfunction 10 - get sound DMA channel. ========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 26 - function number
|
||
* ebx = 10 - subfunction number
|
||
Returned value:
|
||
* eax = number of the channel (from 0 to 3 inclusive)
|
||
Remarks:
|
||
* Number of the DMA channel is used by subfunction 1 of function 55.
|
||
* To set the sound DMA channel use subfunction 10 of function 21.
|
||
|
||
======================================================================
|
||
===================== Function 26, subfunction 11 ====================
|
||
========== Find out whether low-level HD access is enabled. ==========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 26 - function number
|
||
* ebx = 11 - subfunction number
|
||
Returned value:
|
||
* eax = 0/1 - disabled/enabled
|
||
Remarks:
|
||
* Is used in LBA read (subfunction 8 of function 58).
|
||
* To set current state use subfunction 11 of function 21.
|
||
|
||
======================================================================
|
||
===================== Function 26, subfunction 12 ====================
|
||
========== Find out whether low-level PCI access is enabled. =========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 26 - function number
|
||
* ebx = 12 - subfunction number
|
||
Returned value:
|
||
* eax = 0/1 - disabled/enabled
|
||
Remarks:
|
||
* Is used by operations with PCI bus (function 62).
|
||
* The current implementation uses only low bit of ecx.
|
||
* To set the current state use subfunction 12 of function 21.
|
||
|
||
======================================================================
|
||
=================== Function 28 - set SB16 volume. ===================
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 28 - function number
|
||
* ebx = what to install:
|
||
* 1 - install common volume
|
||
* 2 - install CD-audio volume
|
||
* cl = volume level (0=off, 0xFF=max)
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - SB base is not defined
|
||
* eax = 2 - incorrect subfunction
|
||
Remarks:
|
||
* Previously SB base port must be defined by
|
||
subfunction 4 of function 21.
|
||
* This function gives more variants for volume, that function 25.
|
||
|
||
======================================================================
|
||
=================== Function 29 - get system date. ===================
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 29 - function number
|
||
Returned value:
|
||
* eax = 0x00DDMMYY, where
|
||
(binary-decimal coding, BCD, is used)
|
||
* YY = two low digits of year (00..99)
|
||
* MM = month (01..12)
|
||
* DD = day (01..31)
|
||
Remarks:
|
||
* To set system date use function 22.
|
||
|
||
======================================================================
|
||
=============== Function 32 - delete file from ramdisk. ==============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 32 - function number
|
||
* ebx = pointer to the filename
|
||
Returned value:
|
||
* eax = 0 - success; otherwise file system error code
|
||
Remarks:
|
||
* This function is obsolete; function 58 allows to fulfill
|
||
the same operations with the extended possibilities.
|
||
* The current implementation returns only values 0(success) and
|
||
5(file not found).
|
||
* The filename must be either in the format 8+3 characters
|
||
(first 8 characters - name itself, last 3 - extension,
|
||
the short names and extensions are supplemented with spaces),
|
||
or in the format 8.3 characters "FILE.EXT"/"FILE.EX "
|
||
(name no more than 8 characters, dot, extension 3 characters
|
||
supplemented if necessary by spaces).
|
||
The filename must be written with capital letters. The terminating
|
||
character with code 0 is not necessary (not ASCIIZ-string).
|
||
* This function does not support folders on the ramdisk.
|
||
|
||
======================================================================
|
||
================ Function 33 - write file to ramdisk. ================
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 33 - function number
|
||
* ebx = pointer to the filename
|
||
* ecx = pointer to data for writing
|
||
* edx = number of bytes for writing
|
||
* should be set esi=0
|
||
Returned value:
|
||
* eax = 0 - success, otherwise file system error code
|
||
Remarks:
|
||
* This function is obsolete; function 70 allows to fulfil
|
||
the same operations with extended possibilities.
|
||
* If esi contains non-zero value and selected file already exists,
|
||
one more file with the same name will be created.
|
||
* Otherwise file will be overwritten.
|
||
* The filename must be either in the format 8+3 characters
|
||
(first 8 characters - name itself, last 3 - extension,
|
||
the short names and extensions are supplemented with spaces),
|
||
or in the format 8.3 characters "FILE.EXT"/"FILE.EX "
|
||
(name no more than 8 characters, dot, extension 3 characters
|
||
supplemented if necessary by spaces).
|
||
The filename must be written with capital letters. The terminating
|
||
character with code 0 is not necessary (not ASCIIZ-string).
|
||
* This function does not support folders on the ramdisk.
|
||
|
||
======================================================================
|
||
======= Function 35 - read the color of a pixel on the screen. =======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 35
|
||
* ebx = y*xsize+x, where
|
||
* (x,y) = coordinates of a pixel (beginning from 0)
|
||
* xsize = horizontal screen size
|
||
Returned value:
|
||
* eax = color 0x00RRGGBB
|
||
Remarks:
|
||
* To get screen sizes use function 14. Pay attention,
|
||
that it subtracts 1 from both sizes.
|
||
* There is also direct access (without any system calls)
|
||
to videomemory through the selector gs. To get parameters of
|
||
the current videomode, use function 61.
|
||
|
||
======================================================================
|
||
=================== Function 37 - work with mouse. ===================
|
||
======================================================================
|
||
|
||
---------- Subfunction 0 - screen coordinates of the mouse -----------
|
||
Parameters:
|
||
* eax = 37 - function number
|
||
* ebx = 0 - subfunction number
|
||
Returned value:
|
||
* eax = x*65536 + y, (x,y)=coordinates of the mouse pointer
|
||
(beginning from 0)
|
||
|
||
-- Subfunction 1 - coordinates of the mouse relative to the window ---
|
||
Parameters:
|
||
* eax = 37 - function number
|
||
* ebx = 1 - subfunction number
|
||
Returned value:
|
||
* eax = x*65536 + y, (x,y)=coordinates of the mouse pointer
|
||
relative to the application window (beginning from 0)
|
||
Remarks:
|
||
* The value is calculated by formula (x-xwnd)*65536 + (y-ywnd).
|
||
If y>=ywnd, the low word is non-negative and contains
|
||
relative y-coordinate, and the high word - relative x-coordinate
|
||
(with correct sign). Otherwise the low word is negative and still
|
||
contains relative y-coordinate, and to the high word
|
||
1 should be added.
|
||
|
||
------------ Subfunction 2 - pressed buttons of the mouse ------------
|
||
Parameters:
|
||
* eax = 37 - function number
|
||
* ebx = 2 - subfunction number
|
||
Returned value:
|
||
* eax contains information on the pressed mouse buttons:
|
||
* bit 0 is set = left button is pressed
|
||
* bit 1 is set = right button is pressed
|
||
* other bits are cleared
|
||
|
||
-------------------- Subfunction 4 - load cursor ---------------------
|
||
Parameters:
|
||
* eax = 37 - function number
|
||
* ebx = 4 - subfunction number
|
||
* dx = data source:
|
||
* dx = LOAD_FROM_FILE = 0 - data in a file
|
||
* ecx = pointer to full path to the cursor file
|
||
* the file must be in the format .cur, which is standard for
|
||
MS Windows, at that of the size 32*32 pixels
|
||
* dx = LOAD_FROM_MEM = 1 - data of file are already loaded in memory
|
||
* ecx = pointer to data of the cursor file
|
||
* the data format is the same as in the previous case
|
||
* dx = LOAD_INDIRECT = 2 - data in memory
|
||
* ecx = pointer to cursor image in the format ARGB 32*32 pixels
|
||
* edx = 0xXXYY0002, where
|
||
* XX = x-coordinate of cursor hotspot
|
||
* YY = y-coordinate
|
||
* 0 <= XX, YY <= 31
|
||
Returned value:
|
||
* eax = 0 - failed
|
||
* otherwise eax = cursor handle
|
||
|
||
--------------------- Subfunction 5 - set cursor ---------------------
|
||
Sets new cursor for the window of the current thread.
|
||
Parameters:
|
||
* eax = 37 - function number
|
||
* ebx = 5 - subfunction number
|
||
* ecx = cursor handle
|
||
Returned value:
|
||
* eax = handle of previous cursor
|
||
Remarks:
|
||
* If the handle is incorrect, the function restores the default
|
||
cursor (standard arrow). In particular, ecx=0 restores it.
|
||
|
||
------------------- Subfunction 6 - delete cursor --------------------
|
||
Parameters:
|
||
* eax = 37 - function number
|
||
* ebx = 6 - subfunction number
|
||
* ecx = cursor handle
|
||
Returned value:
|
||
* eax destroyed
|
||
Remarks:
|
||
* The cursor must be loaded previously by the current thread
|
||
(with the call to subfunction 4). The function does not delete
|
||
system cursors and cursors, loaded by another applications.
|
||
* If the active cursor (set by subfunction 5) is deleted,
|
||
the system restores the default cursor (standard arrow).
|
||
|
||
======================================================================
|
||
====================== Function 38 - draw line. ======================
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 38 - function number
|
||
* ebx = [start coordinate on axis x]*65536 +
|
||
[end coordinate on axis x]
|
||
* ecx = [start coordinate on axis y]*65536 +
|
||
[end coordinate on axis y]
|
||
* edx = 0x00RRGGBB - color
|
||
edx = 0x01xxxxxx - draw inversed line
|
||
(low 24 bits are ignored)
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* Coordinates are relative to the window.
|
||
* End point is also drawn.
|
||
|
||
======================================================================
|
||
== Function 39, subfunction 1 - get a size of the background image. ==
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 39 - function number
|
||
* ebx = 1 - subfunction number
|
||
Returned value:
|
||
* eax = [width]*65536 + [height]
|
||
Remarks:
|
||
* There is a pair function to set sizes of background image -
|
||
subfunction 1 of function 15. After which it is necessary,
|
||
of course, anew to define image.
|
||
|
||
======================================================================
|
||
== Function 39, subfunction 2 - get pixel from the background image. =
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 39 - function number
|
||
* ebx = 2 - subfunction number
|
||
* ecx = offset
|
||
Returned value:
|
||
* eax = 0x00RRGGBB - pixel color, if offset is valid
|
||
(less than 0x160000-16)
|
||
* eax = 2 otherwise
|
||
Remarks:
|
||
* Do not rely on returned value for invalid offsets, it may be
|
||
changed in future kernel versions.
|
||
* Offset for pixel with coordinates (x,y)
|
||
is calculated as (x+y*xsize)*3.
|
||
* There is a pair function to set pixel on the background image -
|
||
subfunction 2 of function 15.
|
||
|
||
======================================================================
|
||
== Function 39, subfunction 4 - get drawing mode for the background. =
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 39 - function number
|
||
* ebx = 4 - subfunction number
|
||
Returned value:
|
||
* eax = 1 - tile
|
||
* eax = 2 - stretch
|
||
Remarks:
|
||
* There is a pair function to set drawing mode -
|
||
subfunction 4 of function 15.
|
||
|
||
======================================================================
|
||
=========== Function 40 - set the mask for expected events. ==========
|
||
======================================================================
|
||
The mask for expected events affects function working with events
|
||
10, 11, 23 - they notify only about events allowed by this mask.
|
||
Parameters:
|
||
* eax = 40 - function number
|
||
* ebx = mask: bit i corresponds to event i+1 (see list of events)
|
||
(set bit permits notice on event)
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* Default mask (7=111b) enables nofices about redraw,
|
||
keys and buttons. This is enough for many applications.
|
||
* Events prohibited in the mask are saved anyway, when come;
|
||
they are simply not informed with event functions.
|
||
* Event functions take into account the mask on moment of
|
||
function call, not on moment of event arrival.
|
||
|
||
======================================================================
|
||
==================== Function 41 - get IRQ owner. ====================
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 41 - function number
|
||
* ebx = IRQ number, 0..15
|
||
Returned value:
|
||
* eax = owner PID
|
||
* eax = 0, if there is no owner
|
||
* eax = -1 for incorrect ebx
|
||
|
||
======================================================================
|
||
==================== Function 42 - read IRQ data. ====================
|
||
======================================================================
|
||
When an IRQ occurs, the system reads data from ports indicated
|
||
earlier by function 44 and writes this data to
|
||
internal buffer. This function reads out data from that buffer
|
||
bytewise.
|
||
Parameters:
|
||
* eax = 42 - function number
|
||
* ebx = IRQ number, 0..15
|
||
Returned value: (use value of ecx to distinguish)
|
||
* if the thread is not IRQ owner (or IRQ number is incorrect):
|
||
* ecx = 2
|
||
* if there is no data:
|
||
* eax = 0
|
||
* ecx = 1
|
||
* ebx destroyed
|
||
* if all is ok:
|
||
* eax = byte size of data, not yet read from buffer
|
||
* ecx = 0
|
||
* ebx = current byte
|
||
Remarks:
|
||
* Previously the thread must reserve indicated IRQ for itself
|
||
by function 45.
|
||
* The size of data buffer is 4000 bytes, on overflow
|
||
"fresh" data cease to be written in the buffer.
|
||
|
||
======================================================================
|
||
================ Function 43 - input/output to a port. ===============
|
||
======================================================================
|
||
|
||
------------------------ Output data to port -------------------------
|
||
Parameters:
|
||
* eax = 43 - function number
|
||
* bl = byte for output
|
||
* ecx = port number 0xnnnn (from 0 to 0xFFFF)
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - the thread has not reserved the selected port
|
||
|
||
------------------------ Input data from port ------------------------
|
||
Parameters:
|
||
* eax = 43 - function number
|
||
* ebx is ignored
|
||
* ecx = 0x8000nnnn, where nnnn = port number (from 0 to 0xFFFF)
|
||
Returned value:
|
||
* eax = 0 - success, thus ebx = entered byte
|
||
* eax = 1 - the thread has not reserved the selected port
|
||
Remarks:
|
||
* Previously the thread must reserve the selected port
|
||
for itself by function 46.
|
||
* Instead of call to this function it is better to use
|
||
processor instructions in/out - this is much
|
||
faster and a bit shorter and easier.
|
||
|
||
======================================================================
|
||
=========== Function 44 - define operations at IRQ arrival. ==========
|
||
======================================================================
|
||
At IRQ arrival the system can read the data from ports defined
|
||
by this function and write these data to internal buffer, whence
|
||
they can be read by <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 42.
|
||
Parameters:
|
||
* eax = 44 - function number
|
||
* ebx = pointer to the array of structures each describing one port:
|
||
* +0: word: 0 means end of array, otherwise port number
|
||
* +2: byte: reserved (ignored)
|
||
* +3: byte: 1=read byte from this port, 2=read word
|
||
* ecx = IRQ number, 0..15
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - the thread is not owner of selected IRQ
|
||
Remarks:
|
||
* Previously the thread must reserve for itself selected IRQ
|
||
by function 45.
|
||
* First 16 ports are considered only.
|
||
* The current implementation considers incorrect value of field +3
|
||
as a signal to terminate IRQ processing.
|
||
|
||
======================================================================
|
||
=================== Function 45 - reserve/free IRQ. ==================
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 45 - function number
|
||
* ebx = 0 - reserve, 1 = free
|
||
* ecx = IRQ number, 0..15
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - error (invalid IRQ number
|
||
or attempt to reserve not free IRQ
|
||
or to free IRQ, not reserved by this thread)
|
||
Remarks:
|
||
* IRQ reservation is required for functions 42 and 44.
|
||
* Only one thread can reserve the specific IRQ.
|
||
* IRQs, handled by the system itself, are reserved by the system
|
||
(thread 1) at booting.
|
||
* When a thread terminates, all reserved by it IRQs
|
||
are freed automatically.
|
||
|
||
======================================================================
|
||
====== Function 46 - reserve/free a group of input/output ports. =====
|
||
======================================================================
|
||
To work with reserved ports an application can access directly by
|
||
commands in/out (recommended way) and can use function 43
|
||
(not recommended way).
|
||
Parameters:
|
||
* eax = 46 - function number
|
||
* ebx = 0 - reserve, 1 - free
|
||
* ecx = start port number
|
||
* edx = end port number (inclusive)
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - error
|
||
Remarks:
|
||
* For ports reservation: an error occurs if and only if
|
||
one from the following condition satisfies:
|
||
* start port is more than end port;
|
||
* the selected range contains incorrect port number
|
||
(correct are from 0 to 0xFFFF);
|
||
* limit for the total number of reserved areas is exceeded
|
||
(maximum 255 are allowed);
|
||
* the selected range intersects with any of earlier reserved
|
||
* For ports free: an error is an attempt to free range,
|
||
that was not earlier reserved by this function
|
||
(with same ecx,edx).
|
||
* If an error occurs (for both cases) function performs no action.
|
||
* At booting the system reserves for itself ports
|
||
0..0x2d, 0x30..0x4d, 0x50..0xdf, 0xe5..0xff (inclusively).
|
||
* When a thread terminates, all reserved by it ports
|
||
are freed automatically.
|
||
|
||
======================================================================
|
||
============= Function 47 - draw a number in the window. =============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 47 - function number
|
||
* ebx = parameters of conversion number to text:
|
||
* bl = 0 - ecx contains number
|
||
* bl = 1 - ecx contains pointer to dword-number
|
||
* bh = 0 - display in decimal number system
|
||
* bh = 1 - display in hexadecimal system
|
||
* bh = 2 - display in binary system
|
||
* <20><><EFBFBD><EFBFBD> 16-21 = how many digits to display
|
||
* <20><><EFBFBD><EFBFBD> 22-31 reserved and must be set to 0
|
||
* ecx = number (if bl=0) or pointer (if bl=1)
|
||
* edx = [coordinate on axis x]*65536 + [coordinate on axis y]
|
||
* esi = 0xX0RRGGBB:
|
||
* RR, GG, BB specify the color
|
||
* X = ABnn (bits)
|
||
* nn = font (0/1)
|
||
* A is ignored
|
||
* B=1 - fill background with the color edi
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* The given length must not exceed 60.
|
||
* The exactly given amount of digits is output. If number is small
|
||
and can be written by smaller amount of digits, it is supplemented
|
||
by leading zeroes; if the number is big and can not be written by
|
||
given amount of digits, extra digits are not drawn.
|
||
* Parameters of fonts are shown in the description of function 4
|
||
(text output).
|
||
|
||
======================================================================
|
||
========= Function 48, subfunction 0 - apply screen settings. ========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 48 - function number
|
||
* ebx = 0 - subfunction number
|
||
* ecx = 0 - reserved
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* Function redraws the screen after parameters change by
|
||
subfunctions 1 and 2.
|
||
* Function call without prior call to one of indicated subfunctions
|
||
is ignored.
|
||
* Function call with nonzero ecx is ignored.
|
||
|
||
======================================================================
|
||
=========== Function 48, subfunction 1 - set button style. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 48 - function number
|
||
* ebx = 1 - subfunction number
|
||
* ecx = button style:
|
||
* 0 = flat
|
||
* 1 = 3d
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* After call to this function one should redraw the screen by
|
||
subfunction 0.
|
||
* Button style influences only to their draw of function 8.
|
||
|
||
======================================================================
|
||
====== Function 48, subfunction 2 - set standard window colors. ======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 48 - function number
|
||
* ebx = 2 - subfunction number
|
||
* ecx = pointer to the color table
|
||
* edx = size of the color table
|
||
(must be 40 bytes for future compatibility)
|
||
Format of the color table is shown in description of subfunction 3.
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* After call to this function one should redraw the screen by
|
||
subfunction 0.
|
||
* Table of standard colors influences only to applications,
|
||
which receive this table obviously (by subfunction 3)
|
||
and use it (specifying colors from it to drawing functions).
|
||
* Table of standard colors is included in skin and is installed
|
||
anew with skin installation (by subfunction 8).
|
||
* Color table can be viewed/changed interactively with
|
||
the application 'desktop'.
|
||
|
||
======================================================================
|
||
====== Function 48, subfunction 3 - get standard window colors. ======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 48 - function number
|
||
* ebx = 3 - subfunction number
|
||
* ecx = pointer to the buffer with size edx bytes,
|
||
where table will be written
|
||
* edx = size of color table
|
||
(must be 40 bytes for future compatibility)
|
||
Returned value:
|
||
* function does not return value
|
||
Format of the color table:
|
||
each item is dword-value for color 0x00RRGGBB
|
||
* +0: dword: frames - color of frame
|
||
* +4: dword: grab - color of header
|
||
* +8: dword: grab_button - color of button on header bar
|
||
* +12 = +0xC: dword: grab_button_text - color of text on button
|
||
on header bar
|
||
* +16 = +0x10: dword: grab_text - color of text on header
|
||
* +20 = +0x14: dword: work - color of working area
|
||
* +24 = +0x18: dword: work_button - color of button in working area
|
||
* +28 = +0x1C: dword: work_button_text - color of text on button
|
||
in working area
|
||
* +32 = +0x20: dword: work_text - color of text in working area
|
||
* +36 = +0x24: dword: work_graph - color of graphics in working area
|
||
Remarks:
|
||
* Structure of the color table is described in the standard
|
||
include file 'macros.inc' as 'system_colors'; for example,
|
||
it is possible to write:
|
||
sc system_colors ; variable declaration
|
||
... ; somewhere one must call
|
||
; this function with ecx=sc
|
||
mov ecx, [sc.work_button_text] ; read text color on
|
||
; buttin in working area
|
||
* A program itself desides to use or not to use color table.
|
||
For usage program must simply at calls to drawing functions select
|
||
color taken from the table.
|
||
* At change of the table of standard colors (by subfunction 2 with
|
||
the subsequent application of changes by subfunction 0 or
|
||
at skin set by subfunction 8) the system sends to all windows
|
||
redraw message (the event with code 1).
|
||
* Color table can be viewed/changed interactively with
|
||
the application 'desktop'.
|
||
|
||
======================================================================
|
||
============ Function 48, subfunction 4 - get skin height. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 48 - function number
|
||
* ebx = 4 - subfunction number
|
||
Returned value:
|
||
* eax = skin height
|
||
Remarks:
|
||
* Skin height is defined as the height of a header
|
||
of skinned windows.
|
||
* See also general structure of window in the description
|
||
of function 0.
|
||
|
||
======================================================================
|
||
======== Function 48, subfunction 5 - get screen working area. =======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 48 - function number
|
||
* ebx = 5 - subfunction number
|
||
Returned value:
|
||
* eax = [left]*65536 + [right]
|
||
* ebx = [top]*65536 + [bottom]
|
||
Remarks:
|
||
* The screen working area defines position and coordinates of
|
||
a maximized window.
|
||
* The screen working area in view of normal work is all screen
|
||
without system panel (the application '@panel').
|
||
* (left,top) are coordinates of the left upper corner,
|
||
(right,bottom) are coordinates of the right lower one.
|
||
Thus the size of working area on x axis can be calculated by
|
||
formula right-left+1, on y axis - by formula bottom-right+1.
|
||
* See also function 14,
|
||
to get sizes of all screen.
|
||
* There is a pair function to set working area - subfunction 6.
|
||
|
||
======================================================================
|
||
======== Function 48, subfunction 6 - set screen working area. =======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 48 - function number
|
||
* ebx = 6 - subfunction number
|
||
* ecx = [left]*65536 + [right]
|
||
* edx = [top]*65536 + [bottom]
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* The screen working area defines position and coordinates of
|
||
a maximized window.
|
||
* This function is used only by the application '@panel',
|
||
which set working area to all screen without system panel.
|
||
* (left,top) are coordinates of the left upper corner,
|
||
(right,bottom) are coordinates of the right lower one.
|
||
Thus the size of working area on x axis can be calculated by
|
||
formula right-left+1, on y axis - by formula bottom-right+1.
|
||
* If 'left'>='right', x-coordinate of working area is not changed.
|
||
If 'left'<0, 'left' will not be set. If 'right' is greater than or
|
||
equal to screen width, 'right' will not be set.
|
||
Similarly on y axis.
|
||
* See also function 14,
|
||
to get sizes of all screen.
|
||
* There is a pair function to get working area - subfunction 5.
|
||
* This function redraws the screen automatically,
|
||
updating coordinates and sizes of maximized windows.
|
||
The system sends to all windows redraw message (the event 1).
|
||
|
||
======================================================================
|
||
=========== Function 48, subfunction 7 - get skin margins. ===========
|
||
======================================================================
|
||
Returns the area of a header of a skinned window, intended for
|
||
a text of a header.
|
||
Parameters:
|
||
* eax = 48 - function number
|
||
* ebx = 7 - subfunction number
|
||
Returned value:
|
||
* eax = [left]*65536 + [right]
|
||
* ebx = [top]*65536 + [bottom]
|
||
Remarks:
|
||
* An application decides itself to use or not to use this function.
|
||
* It is recommended to take into account returned value
|
||
of this function for choice of a place for drawing header text
|
||
(by function 4) or a substitute of header text
|
||
(at the discretion of an application).
|
||
|
||
======================================================================
|
||
============= Function 48, subfunction 8 - set used skin. ============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 48 - function number
|
||
* ebx = 8 - subfunction number
|
||
* ecx = pointer to a block for function 58, in
|
||
which the fields of intermediate buffer and file name are filled
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* otherwise eax = file system error code; if file does not
|
||
contain valid skin, function returns error 3
|
||
(unknown file system).
|
||
Remarks:
|
||
* After successful skin loading the system sends to all windows
|
||
redraw message (the event 1).
|
||
* At booting the system reads skin from file 'default.skn'
|
||
on ramdisk.
|
||
* User can change the skin statically by creating hisself
|
||
'default.skn' or dynamically with the application 'desktop'.
|
||
|
||
======================================================================
|
||
=========== Function 49 - Advanced Power Management (APM). ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 49 - function number
|
||
* dx = number of the APM function
|
||
(analogue of ax in APM specification)
|
||
* bx, cx = parameters of the APM function
|
||
Returned value:
|
||
* 16-bit registers ax, bx, cx, dx, si, di and carry flag CF
|
||
are set according to the APM specification
|
||
* high halves of 32-bit registers eax, ebx, ecx,
|
||
edx, esi, edi are destroyed
|
||
Remarks:
|
||
* APM 1.2 specification is described in the document
|
||
"Advanced Power Management (APM) BIOS Specification"
|
||
(Revision 1.2), available at
|
||
http://www.microsoft.com/whdc/archive/amp_12.mspx;
|
||
besides it is included in famous Interrupt List by Ralf Brown
|
||
(http://www.pobox.com/~ralf/files.html,
|
||
ftp://ftp.cs.cmu.edu/afs/cs/user/ralf/pub/).
|
||
|
||
======================================================================
|
||
=================== Function 50 - set window shape. ==================
|
||
======================================================================
|
||
Normal windows have rectangular shape. This function can give to
|
||
a window any shape. The shape is given by a set of points inside
|
||
the base rectangle belonging to a window. Position and coordinates
|
||
of the base rectangle are set by function 0
|
||
and changed by function 67.
|
||
|
||
--------------------------- Set shape data ---------------------------
|
||
Parameters:
|
||
* eax = 50 - function number
|
||
* ebx = 0 - subfunction number
|
||
* ecx = pointer to shape data (array of bytes 0/1)
|
||
Returned value:
|
||
* function does not return value
|
||
|
||
-------------------------- Set shape scale ---------------------------
|
||
Parameters:
|
||
* eax = 50 - function number
|
||
* ebx = 1 - subfunction number
|
||
* ecx sets a scale: each byte of data defines
|
||
(2^scale)*(2^scale) pixels
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* Default scale is 0 (scale factor is 1). If in the shape data
|
||
one byte corresponds to one pixel, there is no necessity
|
||
to set scale.
|
||
* Let's designate xsize = window width (in pixels), ysize = height;
|
||
pay attention, that they are one pixel more than defined by
|
||
functions 0, 67.
|
||
* On definition of scale xsize and ysize must be divisible
|
||
on 2^scale.
|
||
* Byte of data on offset 'a' must be 0/1 and defines belonging
|
||
to a window of square with the side 2^scale (if scale=0,
|
||
this is one pixel) and coordinates of the left upper corner
|
||
(a mod (xsize shr scale), a div (xsize shr scale))
|
||
* Data size: (xsize shr scale)*(ysize shr scale).
|
||
* Data must be presented in the memory and not change
|
||
after set of shape.
|
||
* The system views the shape data at every window redraw by
|
||
function 0.
|
||
* The call of subfunction 0 with NULL pointer results in return
|
||
to the rectangular shape.
|
||
|
||
======================================================================
|
||
==================== Function 51 - create thread. ====================
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 51 - function number
|
||
* ebx = 1 - unique subfunction
|
||
* ecx = address of thread entry point (starting eip)
|
||
* edx = pointer to thread stack (starting esp)
|
||
Returned value:
|
||
* eax = -1 - error (there is too many threads)
|
||
* otherwise eax = TID - thread identifier
|
||
</UL>
|
||
|
||
======================================================================
|
||
=== Function 52, subfunction 0 - get network driver configuration. ===
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 52 - function number
|
||
* ebx = 0 - subfunction number
|
||
Returned value:
|
||
* eax = configuration dword
|
||
Remarks:
|
||
* Configuration dword can be set by subfunction 2.
|
||
* The kernel does not use this variable. The value of this
|
||
variable and working with it subfunctions 0 and 2 is represented
|
||
doubtful.
|
||
|
||
======================================================================
|
||
========= Function 52, subfunction 1 - get local IP-address. =========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 52 - function number
|
||
* ebx = 1 - subfunction number
|
||
Returned value:
|
||
* eax = IP-address (4 bytes)
|
||
Remarks:
|
||
* Local IP-address is set by subfunction 3.
|
||
|
||
======================================================================
|
||
=== Function 52, subfunction 2 - set network driver configuration. ===
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 52 - function number
|
||
* ebx = 2 - subfunction number
|
||
* ecx = configuration dword; if low 7 bits derivate the number 3,
|
||
function [re-]initializes Ethernet-card, otherwise
|
||
Ethernet turns off
|
||
Returned value:
|
||
* if Ethernet-interface is not requested, function returns eax=2,
|
||
but this can be changed in future kernel versions
|
||
* if Ethernet-interface is requested, eax=0 means error
|
||
(absence of Ethernet-card), and nonzero value - success
|
||
Remarks:
|
||
* Configuration dword can be read by subfunction 0.
|
||
* The kernel does not use this variable. The value of this
|
||
variable, subfunction 0 and part of subfunction 2, which set it,
|
||
is represented doubtful.
|
||
|
||
======================================================================
|
||
========= Function 52, subfunction 3 - set local IP-address. =========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 52 - function number
|
||
* ebx = 3 - subfunction number
|
||
* ecx = IP-address (4 bytes)
|
||
Returned value:
|
||
* the current implementation returns eax=3, but this can be changed
|
||
in future versions
|
||
Remarks:
|
||
* Local IP-address can be get by subfunction 1.
|
||
|
||
======================================================================
|
||
= Function 52, subfunction 6 - add data to the stack of input queue. =
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 52 - function number
|
||
* ebx = 6 - subfunction number
|
||
* edx = data size
|
||
* esi = data pointer
|
||
Returned value:
|
||
* eax = -1 - error
|
||
* eax = 0 - success
|
||
Remarks:
|
||
* This function is intended only for slow network drivers
|
||
(PPP, SLIP).
|
||
* Data size must not exceed 1500 bytes, though function
|
||
performs no checks on correctness.
|
||
|
||
======================================================================
|
||
Function 52, subfunction 8 - read data from the network output queue.
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 52 - function number
|
||
* ebx = 8 - subfunction number
|
||
* esi = pointer to 1500-byte buffer
|
||
Returned value:
|
||
* eax = number of read bytes (in the current implementation
|
||
either 0 = no data or 1500)
|
||
* data was copied in buffer
|
||
Remarks:
|
||
* This function is intended only for slow network drivers
|
||
(PPP, SLIP).
|
||
|
||
======================================================================
|
||
============ Function 52, subfunction 9 - get gateway IP. ============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 52 - function number
|
||
* ebx = 9 - subfunction number
|
||
Returned value:
|
||
* eax = gateway IP (4 bytes)
|
||
|
||
======================================================================
|
||
=========== Function 52, subfunction 10 - get subnet mask. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 52 - function number
|
||
* ebx = 10 - subfunction number
|
||
Returned value:
|
||
* eax = subnet mask
|
||
|
||
======================================================================
|
||
============ Function 52, subfunction 11 - set gateway IP. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 52 - function number
|
||
* ebx = 11 - subfunction number
|
||
* ecx = gateway IP (4 bytes)
|
||
Returned value:
|
||
* the current implementation returns eax=11, but this can be changed
|
||
in future versions
|
||
|
||
======================================================================
|
||
=========== Function 52, subfunction 12 - set subnet mask. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 52 - function number
|
||
* ebx = 12 - subfunction number
|
||
* ecx = subnet mask
|
||
Returned value:
|
||
* the current implementation returns eax=12, but this can be changed
|
||
in future versions
|
||
|
||
======================================================================
|
||
============== Function 52, subfunction 13 - get DNS IP. =============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 52 - function number
|
||
* ebx = 13 - subfunction number
|
||
Returned value:
|
||
* eax = DNS IP (4 bytes)
|
||
|
||
======================================================================
|
||
============== Function 52, subfunction 14 - set DNS IP. =============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 52 - function number
|
||
* ebx = 14 - subfunction number
|
||
* ecx = DNS IP (4 bytes)
|
||
Returned value:
|
||
* the current implementation returns eax=14, but this can be changed
|
||
in future versions
|
||
|
||
======================================================================
|
||
======== Function 52, subfunction 15 - get local MAC address. ========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 52 - function number
|
||
* ebx = 15 - subfunction number
|
||
* ecx = 0 - read first 4 bytes,
|
||
ecx = 4 - read last 2 bytes
|
||
Returned value:
|
||
* for ecx=0: eax = first 4 bytes of MAC address
|
||
* for ecx=4: ax = last 2 bytes of MAC address,
|
||
high half of eax is destroyed
|
||
* for other ecx: eax = -1 indicates an error
|
||
|
||
======================================================================
|
||
============ Function 53, subfunction 0 - open UDP-socket. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 53 - function number
|
||
* ebx = 0 - subfunction number
|
||
* ecx = local port (only low word is taken into account)
|
||
* edx = remote port (only low word is taken into account)
|
||
* esi = remote IP
|
||
Returned value:
|
||
* eax = -1 = 0xFFFFFFFF - error; ebx destroyed
|
||
* eax = socket handle (some number which unambiguously identifies
|
||
socket and have sense only for the system) - success;
|
||
ebx destroyed
|
||
|
||
======================================================================
|
||
=========== Function 53, subfunction 1 - close UDP-socket. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 53 - function number
|
||
* ebx = 1 - subfunction number
|
||
* ecx = socket handle
|
||
Returned value:
|
||
* eax = -1 - incorrect handle
|
||
* eax = 0 - success
|
||
* ebx destroyed
|
||
Remarks:
|
||
* The current implementation does not close automatically all
|
||
sockets of a thread at termination. In particular, one should not
|
||
kill a thread with many opened sockets - there will be an outflow
|
||
of resources.
|
||
* The current implementation does no checks on correctness
|
||
(function returns error only if thread tries to close not opened
|
||
socket with correct handle).
|
||
|
||
======================================================================
|
||
============== Function 53, subfunction 2 - poll socket. =============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 53 - function number
|
||
* ebx = 2 - subfunction number
|
||
* ecx = socket handle
|
||
Returned value:
|
||
* eax = number of read bytes
|
||
* ebx destroyed
|
||
Remarks:
|
||
* There is no checks for correctness.
|
||
|
||
======================================================================
|
||
========= Function 53, subfunction 3 - read byte from socket. ========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 53 - function number
|
||
* ebx = 3 - subfunction number
|
||
* ecx = socket handle
|
||
Returned value:
|
||
* if there is no read data: eax=0, bl=0,
|
||
other bytes of ebx are destroyed
|
||
* if there are read data: eax=number of rest bytes
|
||
(possibly 0), bl=read byte, other bytes of ebx are destroyed
|
||
Remarks:
|
||
* There is no checks for correctness.
|
||
|
||
======================================================================
|
||
========== Function 53, subfunction 4 - write to UDP-socket. =========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 53 - function number
|
||
* ebx = 4 - subfunction number
|
||
* ecx = socket handle
|
||
* edx = number of bytes to write
|
||
* esi = pointer to data to write
|
||
Returned value:
|
||
* eax = 0xffffffff - invalid handle
|
||
* eax = 0xffff - not enough memory
|
||
* eax = 0 - success
|
||
* ebx destroyed
|
||
Remarks:
|
||
* Check on validity of handle is minimal - only not very incorrect
|
||
not opened handles are eliminated.
|
||
* Number of bytes to write must not exceed 1500-28, though
|
||
the appropriate check is not made.
|
||
|
||
======================================================================
|
||
============ Function 53, subfunction 5 - open TCP-socket. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 53 - function number
|
||
* ebx = 5 - subfunction number
|
||
* ecx = local port (only low word is taken into account)
|
||
* edx = remote port (only low word is taken into account)
|
||
* esi = remote IP
|
||
* edi = open mode: SOCKET_PASSIVE=0 or SOCKET_ACTIVE=1
|
||
Returned value:
|
||
* eax = -1 = 0xFFFFFFFF - error; ebx destroys
|
||
* eax = socket handle (some number which unambiguously identifies
|
||
socket and have sense only for the system) - success;
|
||
ebx destroyed
|
||
|
||
======================================================================
|
||
========= Function 53, subfunction 6 - get TCP-socket status. ========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 53 - function number
|
||
* ebx = 6 - subfunction number
|
||
* ecx = socket handle
|
||
Returned value:
|
||
* eax = socket status: one of
|
||
* TCB_LISTEN = 1
|
||
* TCB_SYN_SENT = 2
|
||
* TCB_SYN_RECEIVED = 3
|
||
* TCB_ESTABLISHED = 4
|
||
* TCB_FIN_WAIT_1 = 5
|
||
* TCB_FIN_WAIT_2 = 6
|
||
* TCB_CLOSE_WAIT = 7
|
||
* TCB_CLOSING = 8
|
||
* TCB_LAST_ASK = 9
|
||
* TCB_TIME_WAIT = 10
|
||
* TCB_CLOSED = 11
|
||
* ebx destroys
|
||
Remarks:
|
||
* There is no checks for correctness.
|
||
|
||
======================================================================
|
||
========== Function 53, subfunction 7 - write to TCP-socket. =========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 53 - function number
|
||
* ebx = 7 - subfunction number
|
||
* ecx = socket handle
|
||
* edx = number of bytes to write
|
||
* esi = pointer to data to write
|
||
Returned value:
|
||
* eax = 0xffffffff - error
|
||
* eax = 0xffff - not enough memory
|
||
* eax = 0 - success
|
||
* ebx destroyed
|
||
Remarks:
|
||
* Check on validity of handle is minimal - only not very incorrect
|
||
not opened handles are eliminated.
|
||
* Number of bytes to write must not exceed 1500-40, though
|
||
the appropriate check is not made.
|
||
|
||
======================================================================
|
||
=========== Function 53, subfunction 8 - close TCP-socket. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 53 - function number
|
||
* ebx = 8 - subfunction number
|
||
* ecx = socket handle
|
||
Returned value:
|
||
* eax = -1 - invalid handle
|
||
* eax = 0xffff - not enough memory for socket close packet
|
||
* eax = 0 - success
|
||
* in many cases eax is destroyed (the result of function 'queue'
|
||
is returned) - probably this is bug, which will be corrected
|
||
* ebx destroyed
|
||
Remarks:
|
||
* The current implementation does not close automatically all
|
||
sockets of a thread at termination. In particular, one should not
|
||
kill a thread with many opened sockets - there will be an outflow
|
||
of resources.
|
||
* The current implementation does no checks on correctness
|
||
(function returns error only if thread tries to close not opened
|
||
socket with correct handle).
|
||
|
||
======================================================================
|
||
=== Function 53, subfunction 9 - check whether local port is free. ===
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 53 - function number
|
||
* ebx = 9 - subfunction number
|
||
* ecx = local port number (low 16 bits are used only)
|
||
Returned value:
|
||
* eax = 0 - port is used
|
||
* eax = 1 - port is free
|
||
* ebx destroyed
|
||
|
||
======================================================================
|
||
===== Function 53, subfunction 10 - query Ethernet cable status. =====
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 53 - function number
|
||
* ebx = 10 - subfunction number
|
||
Returned value:
|
||
* al = -1 - a network driver is not loaded or
|
||
does not support this function
|
||
* al = 0 - Ethernet cable is unplugged
|
||
* al = 1 - Ethernet cable is plugged
|
||
* ebx destroyed
|
||
Remarks:
|
||
* The current kernel implementation supports this function
|
||
only for RTL8139 network cards.
|
||
|
||
======================================================================
|
||
======= Function 53, subfunction 11 - read network stack data. =======
|
||
======================================================================
|
||
Paramters:
|
||
* eax = 53 - function number
|
||
* ebx = 11 - subfunction number
|
||
* ecx = socket handle
|
||
* edx = pointer to buffer
|
||
* esi = number of bytes to read;
|
||
* esi = 0 - read all data (maximum 4096 bytes)
|
||
Returned value:
|
||
* eax = number of bytes read
|
||
* ebx destroyed
|
||
Remakrs:
|
||
* There is no check on handle correctness.
|
||
|
||
======================================================================
|
||
= Function 53, subfunction 255 - debug information of network driver.
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 53 - function number
|
||
* ebx = 255 - subfunction number
|
||
* ecx = type of requested information (see below)
|
||
Returned value:
|
||
* eax = requested information
|
||
* ebx destroyed
|
||
Possible values for ecx:
|
||
* 100: length of queue 0 (empty queue)
|
||
* 101: length of queue 1 (ip-out queue)
|
||
* 102: length of queue 2 (ip-in queue)
|
||
* 103: length of queue 3 (net1out queue)
|
||
* 200: number of items in the ARP table
|
||
* 201: size of the ARP table (in items) (20 for current version)
|
||
* 202: read item at edx of the ARP table to the temporary buffer,
|
||
whence 5 following types take information;
|
||
in this case eax is not defined
|
||
* 203: IP-address saved by type 202
|
||
* 204: high dword of MAC-address saved by type 202
|
||
* 205: low word of MAC-address saved by type 202
|
||
* 206: status word saved by type 202
|
||
* 207: ttl word saved by type 202
|
||
* 2: total number of received IP-packets
|
||
* 3: total number of transferred IP-packets
|
||
* 4: total number of dumped received packets
|
||
* 5: total number of received ARP-packets
|
||
* 6: status of packet driver, 0=inactive, nonzero=active
|
||
|
||
======================================================================
|
||
========== Function 55, subfunction 0 - load data for SB16. ==========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 55 - function number
|
||
* ebx = 0 - subfunction number
|
||
* ecx = pointer to data (is copied 64 kilobytes, is used as much as
|
||
set by subfunction 2)
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* Format and size of data are set by subfunction 2.
|
||
|
||
======================================================================
|
||
======== Function 55, subfunction 1 - begin play data on SB16. =======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 55 - function number
|
||
* ebx = 1 - subfunction number
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* Previously data must be loaded by subfunction 0 and
|
||
their format must be defined by subfunction 2.
|
||
* Function returns control, when playing of data began; after that
|
||
play goes independently from application (and does not use
|
||
processor time at all).
|
||
* Previously must be defined SB16 base port
|
||
(by subfunction 4 of function 21) and DMA channel
|
||
(by subfunction 10 of function 21).
|
||
|
||
======================================================================
|
||
======== Function 55, subfunction 2 - set format of SB16 data. =======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 55 - function number
|
||
* ebx = 2 - subfunction number
|
||
* ecx = 0 - set digit capacity
|
||
* edx = 1 - 8bit mono
|
||
* edx = 2 - 8bit stereo
|
||
* ecx = 1 - set data size
|
||
* edx = size in bytes
|
||
* ecx = 2 - set play frequency
|
||
* edx = frequency
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* When the system boots, it sets following default parameters:
|
||
digit capacity - 8bit mono, size - 64 Kb, frequency - 44100 Hz.
|
||
Nevertheless it is recommended to set necessary values obviously
|
||
as they could be reset by some application.
|
||
|
||
======================================================================
|
||
Function 55, subfunction 55 - begin to play data on built-in speaker.
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 55 - function number
|
||
* ebx = 55 - subfunction number
|
||
* esi = pointer to data
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 55 - error (speaker is off or busy)
|
||
Data is an array of items with variable length.
|
||
Format of each item is defined by first byte:
|
||
* 0 = end of data
|
||
* 1..0x80 = sets sound duration on 1/100 of second; sound note
|
||
is defined by immediate value of frequency
|
||
* following word (2 bytes) contains frequency divider;
|
||
frequency is defined as 1193180/divider
|
||
* 0x81 = invalid
|
||
* 0x82..0xFF = note is defined by octave and number:
|
||
* duration in 1/100 of second = (first byte)-0x81
|
||
* there is one more byte;
|
||
* (second byte)=0xFF - delay
|
||
* otherwise it looks like a*0x10+b, where b=number of the note in
|
||
an octave from 1 to 12, a=number of octave (beginning from 0)
|
||
Remarks:
|
||
* Speaker play can be disabled/enabled by
|
||
subfunction 8 of function 18.
|
||
* Function returns control, having informed the system
|
||
an information on request. Play itself goes independently from
|
||
the program.
|
||
* The data must be kept in the memory at least up to the end
|
||
of play.
|
||
|
||
======================================================================
|
||
================ Function 58 - work with file system. ================
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 58
|
||
* ebx = pointer to the information structure
|
||
Returned value:
|
||
* eax = 0 - success; otherwise file system error code
|
||
* some subfunctions return value in other registers too
|
||
General format of the information structure:
|
||
* +0: dword: subfunction number
|
||
* +4: dword: number of block
|
||
* +8: dword: size
|
||
* +12 = +0xC: dword: pointer to data
|
||
* +16 = +0x10: dword: pointer to a memory for system operations
|
||
(4096 bytes)
|
||
* +20 = +0x14: n db: ASCIIZ-string with the file name
|
||
Specifications - in documentation on the appropriate subfunction.
|
||
Filename is case-insensitive for latin letters, russian letters
|
||
must be capital.
|
||
Format of filename:
|
||
/base/number/dir1/dir2/.../dirn/file,
|
||
where /base/number identifies device, on which file is located:
|
||
one of
|
||
* /RD/1 = /RAMDISK/1 to access ramdisk
|
||
* /FD/1 = /FLOPPYDISK/1 to access first floppy drive,
|
||
/FD/2 = /FLOPPYDISK/2 to access second one
|
||
* /HD/x = /HARDDISK/x - obsolete variant of access to hard disk
|
||
(in this case base is defined by subfunction 7 of function 21),
|
||
x - partition number (beginning from 1)
|
||
* /HD0/x, /HD1/x, /HD2/x, /HD3/x to access accordingly to devices
|
||
IDE0 (Primary Master), IDE1 (Primary Slave),
|
||
IDE2 (Secondary Master), IDE3 (Secondary Slave);
|
||
x - partition number on the selected hard drive, varies from 1
|
||
to 255 (on each hard drive the indexing starts from 1)
|
||
Remarks:
|
||
* In the first two cases it is also possible to use FIRST
|
||
instead of 1, SECOND instead of 2, but it is not recommended
|
||
for convenience of transition to the future extensions.
|
||
* Limitation n<=39 is imposed.
|
||
* Names of folders and file dir1,...,dirn,file must have the
|
||
format 8.3: name no more than 8 characters, dot, extension no
|
||
more than 3 characters. Trailing spaces are ignored, no other
|
||
spaces is allowed. If name occupies equally 8 characters,
|
||
dot may be omitted (though it is not recommended to use this
|
||
feature for convenience of transition to the future extensions).
|
||
* This function does not support folders on ramdisk.
|
||
Examples:
|
||
* '/RAMDISK/FIRST/KERNEL.ASM',0
|
||
'/rd/1/kernel.asm',0
|
||
* '/HD0/1/kernel.asm',0
|
||
* '/hd0/1/menuet/pics/tanzania.bmp',0
|
||
Existing subfunctions:
|
||
* subfunction 0 - read file/folder
|
||
* subfunction 1 - rewrite file
|
||
* subfunction 8 - LBA-read from device
|
||
* subfunction 15 - get file system information
|
||
|
||
======================================================================
|
||
=========== Function 58, subfunction 0 - read file/folder. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 58
|
||
* ebx = pointer to the information structure
|
||
Format of the information structure:
|
||
* +0: dword: 0 = subfunction number
|
||
* +4: dword: first block to read (beginning from 0)
|
||
* +8: dword: amount of blocks to read
|
||
* +12 = +0xC: dword: pointer to buffer for data
|
||
* +16 = +0x10: dword: pointer to buffer for system operations
|
||
(4096 bytes)
|
||
* +20 = +0x14: ASCIIZ-name of file, the rules of names forming are
|
||
given in the general description
|
||
Returned value:
|
||
* eax = 0 - success, otherwise file system error code
|
||
* ebx = file size (in bytes) or -1=0xffffffff, if file was not found
|
||
Remarks:
|
||
* Block size is 512 bytes.
|
||
* This function is obsolete, for reading files use subfunction 0
|
||
of function 70, for reading folders - subfunction 1 of
|
||
function 70.
|
||
* Function can read contents of a folder. Only FAT file system is
|
||
supported. The format of FAT-folder is described
|
||
in any FAT documentation.
|
||
* Size of a folder is determined by size of FAT clusters chain.
|
||
* If file was ended before last requested block was read,
|
||
the function will read as many as it can, and after that return
|
||
eax=6 (EOF).
|
||
* Function can read root folders /rd/1,/fd/x,/hd[n]/x, but
|
||
in the first two cases the current implementation does not follow
|
||
to the declared rules:
|
||
for /rd/1:
|
||
* if one want to read 0 blocks, function considers,
|
||
that he requested 1;
|
||
* if one requests more than 14 blocks or starting block is
|
||
not less than 14, function returns eax=5 (not found) <20> ebx=-1;
|
||
* size of ramdisk root folder is 14 blocks,
|
||
0x1C00=7168 <20><><EFBFBD><EFBFBD>; but function returns ebx=0
|
||
(except of the case of previous item);
|
||
* strangely enough, it is possible to read 14th block (which
|
||
generally contains a garbage - I remind, the indexing begins
|
||
from 0);
|
||
* if some block with the number not less than 14 was requested,
|
||
function returns eax=6(EOF); otherwise eax=0.
|
||
For /fd/x:
|
||
* if the start block is not less than 14, function returns
|
||
eax=5 (not found) and ebx=0;
|
||
* note that format of FAT12 allows floppies with the root size
|
||
more or less than 14 blocks;
|
||
* check for length is not performed;
|
||
* if data was successful read, function returns
|
||
eax=0,ebx=0; otherwise eax=10 (access denied), ebx=-1.
|
||
* The function handles reading of special folders /,/rd,/fd,/hd[n];
|
||
but the result does not correspond to expected (on operations with
|
||
normal files/folders), does not follow the declared rules,
|
||
may be changed in future versions of the kernel and consequently
|
||
is not described. To obtain the information about the equipment
|
||
use subfunction 11 of function 18 or
|
||
read corresponding folder with subfunction 1 of function 70.
|
||
|
||
======================================================================
|
||
============= Function 58, subfunction 1 - rewrite file. =============
|
||
======================================================================
|
||
If the file does not exist, it is created.
|
||
If the file exists, it is rewritten.
|
||
Parameters:
|
||
* eax = 58 - function number
|
||
* ebx = pointer to the information structure
|
||
Format of the information structure:
|
||
* +0: dword: 1 = subfunction number
|
||
* +4: dword: ignored (set to 0)
|
||
* +8: dword: number of bytes to write
|
||
* +12 = +0xC: dword: pointer to data to write
|
||
* +16 = +0x10: dword: pointer to buffer for system operations
|
||
(4096 bytes)
|
||
* +20 = +0x14: ASCIIZ-name of file, the rules of names forming are
|
||
given in the general description
|
||
Returned value:
|
||
* eax = 0 - success, otherwise file system error code
|
||
* ebx destroyed
|
||
Remarks:
|
||
* This function is obsolete, use subfunction 2 of function 70.
|
||
|
||
======================================================================
|
||
========= Function 58, subfunction 8 - LBA-read from device. =========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 58 - function number
|
||
* ebx = pointer to the information structure
|
||
Format of the information structure:
|
||
* +0: dword: 8 = subfunction number
|
||
* +4: dword: number of block to read (beginning from 0)
|
||
* +8: dword: ignored (set to 1)
|
||
* +12 = +0xC: dword: pointer to buffer for data (512 bytes)
|
||
* +16 = +0x10: dword: pointer to buffer for system operations
|
||
(4096 bytes)
|
||
* +20 = +0x14: ASCIIZ-name of device: case-insensitive, one of
|
||
/rd/1 = /RamDisk/1, /hd/n = /HardDisk/n,
|
||
1<=n<=4 - number of device: 1=IDE0, ..., 4=IDE3.
|
||
Instead of digits it is allowed, though not recommended for
|
||
convenience of transition to future extensions, to use
|
||
'first','second','third','fourth'.
|
||
Returned value:
|
||
* for device name /hd/xxx, where xxx is not in the list above:
|
||
* eax = ebx = 1
|
||
* for invalid device name (except for the previous case):
|
||
* eax = 5
|
||
* ebx does not change
|
||
* if LBA-access is disabled by subfunction 11 of function 21:
|
||
* eax = 2
|
||
* ebx destroyed
|
||
* for ramdisk: attempt to read block outside ramdisk
|
||
(18*2*80 blocks) results in
|
||
* eax = 3
|
||
* ebx = 0
|
||
* for successful read:
|
||
* eax = ebx = 0
|
||
Remarks:
|
||
* Block size is 512 bytes; function reads one block.
|
||
* Do not depend on returned value, it can be changed
|
||
in future versions.
|
||
* Function requires that LBA-access to devices is enabled by
|
||
subfunction 11 of function 21. To check this one can use
|
||
subfunction 11 of function 26.
|
||
* LBA-read of floppy is not supported.
|
||
* Function reads data on physical hard drive; if for any reason
|
||
data of the concrete partition are required, application must
|
||
define starting sector of this partition (either directly
|
||
through MBR, or from the full structure returned by
|
||
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 11 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 18).
|
||
* Function does not check error code of hard disk, so request of
|
||
nonexisting sector reads something (most probably it will be
|
||
zeroes, but this is defined by device) and this is considered
|
||
as success (eax=0).
|
||
|
||
======================================================================
|
||
==== Function 58, subfunction 15 - get information on file system. ===
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 58 - function number
|
||
* ebx = pointer to the information structure
|
||
Format of the information structure:
|
||
* +0: dword: 15 = subfunction number
|
||
* +4: dword: ignored
|
||
* +8: dword: ignored
|
||
* +12 = +0xC: dword: ignored
|
||
* +16 = +0x10: dword: ignored
|
||
* +20 = +0x14: (only second character is checked)
|
||
/rd=/RAMDISK or /hd=/HARDDISK
|
||
Returned value:
|
||
* if the second character does not belong to set {'r','R','h','H'}:
|
||
* eax = 3
|
||
* ebx = ecx = dword [fileinfo] = 0
|
||
* for ramdisk:
|
||
* eax = 0 (success)
|
||
* ebx = total number of clusters = 2847
|
||
* ecx = number of free clusters
|
||
* dword [fileinfo] = cluster size = 512
|
||
* for hard disk: base and partition are defined by subfunctions
|
||
7 and 8 of function 21:
|
||
* eax = 0 (success)
|
||
* ebx = total number of clusters
|
||
* ecx = number of free clusters
|
||
* dword [fileinfo] = cluster size (in bytes)
|
||
Remarks:
|
||
* Be not surprised to strange layout of 4th returned parameter
|
||
- when this code was writing, at system calls application got
|
||
only registers eax,ebx,ecx (from pushad-structure transmitted
|
||
as argument to the system function). Now it is corrected, so,
|
||
probably, it is meaningful to return cluster size in edx, while
|
||
this function is not used yet.
|
||
* There exists also subfunction 11 of function 18,
|
||
which returns information on file system. From the full table
|
||
of disk subsystem it is possible to deduce cluster size (there
|
||
it is stored in sectors) and total number of clusters
|
||
for hard disks.
|
||
|
||
======================================================================
|
||
========== Function 60 - Inter Process Communication (IPC). ==========
|
||
======================================================================
|
||
IPC is used for message dispatching from one process/thread to
|
||
another. Previously it is necessary to agree how to interpret
|
||
the concrete message.
|
||
|
||
----------- Subfunction 1 - set the area for IPC receiving -----------
|
||
Is called by process-receiver.
|
||
Parameters:
|
||
* eax = 60 - function number
|
||
* ebx = 1 - subfunction number
|
||
* ecx = pointer to the buffer
|
||
* edx = size of the buffer
|
||
Returned value:
|
||
* eax = 0 - always success
|
||
Format of IPC-buffer:
|
||
* +0: dword: if nonzero, buffer is considered locked;
|
||
lock/unlock the buffer, when you work with it and need that
|
||
buffer data are not changed from outside (no new messages)
|
||
* +4: dword: occupied place in the buffer (in bytes)
|
||
* +8: first message
|
||
* +8+n: second message
|
||
* ...
|
||
Format of a message:
|
||
* +0: dword: PID of sender
|
||
* +4: dword: message length (not including this header)
|
||
* +8: n*byte: message data
|
||
|
||
------------------ Subfunction 2 - send IPC message ------------------
|
||
Is called by process-sender.
|
||
Parameters:
|
||
* eax = 60 - function number
|
||
* ebx = 2 - subfunction number
|
||
* ecx = PID of receiver
|
||
* edx = pointer to the message data
|
||
* esi = message length (in bytes)
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - the receiver has not defined buffer for IPC messages
|
||
(can be, still have no time,
|
||
and can be, this is not right process)
|
||
* eax = 2 - the receiver has blocked IPC-buffer; try to wait a bit
|
||
* eax = 3 - overflow of IPC-buffer of the receiver
|
||
* eax = 4 - process/thread with such PID does not exist
|
||
Remarks:
|
||
* Immediately after writing of IPC-message to the buffer the system
|
||
sends to the receiver the event with code 7 (see event codes).
|
||
|
||
======================================================================
|
||
==== Function 61 - get parameters for the direct graphics access. ====
|
||
======================================================================
|
||
The data of the graphics screen (the memory area which displays
|
||
screen contents) are accessible to a program directly, without
|
||
any system calls, through the selector gs:
|
||
mov eax, [gs:0]
|
||
places in eax the first dword of the buffer, which contains
|
||
information on color of the left upper point (and, possibly, colors
|
||
of several following).
|
||
mov [gs:0], eax
|
||
by work in VESA modes with LFB sets color of the left upper point
|
||
(and, possibly, colors of several following).
|
||
To interpret the data of graphics screen program needs to know
|
||
some parameters, returning by this function.
|
||
Remarks:
|
||
* Graphics parameters changes very seldom at work,
|
||
namely, only in cases, when user works with the application VRR.
|
||
* At videomode change the system redraws all windows (event
|
||
with code 1) and redraws the background (event 5).
|
||
Same events occur in other cases too, which meet much more often,
|
||
than videomode change.
|
||
* By operation in videomodes with LFB the selector gs points to
|
||
LFB itself, so reading/writing on gs result directly in
|
||
change of screen contents. By operation in videomodes without
|
||
LFB gs points to some data area in the kernel, and all functions
|
||
of screen output fulfil honesty double operation on writing
|
||
directly to the screen and writing to this buffer. In result
|
||
at reading contents of this buffer the results correspond to
|
||
screen contents (with, generally speaking, large color
|
||
resolution), and writing is ignored.
|
||
One exception is the mode 320*200, for which main loop of the
|
||
system thread updates the screen according to mouse movements.
|
||
|
||
------------------------- Screen resolution --------------------------
|
||
Parameters:
|
||
* eax = 61 - function number
|
||
* ebx = 1 - subfunction number
|
||
Returned value:
|
||
* eax = [resolution on x axis]*65536 + [resolution on y axis]
|
||
Remarks:
|
||
* One can use function 14 paying attention that
|
||
it returns sizes on 1 pixel less. It is fully equivalent way.
|
||
|
||
---------------------- Number of bits per pixel ----------------------
|
||
Parameters:
|
||
* eax = 61 - function number
|
||
* ebx = 2 - subfunction number
|
||
Returned value:
|
||
* eax = number of bits per pixel (24 or 32)
|
||
|
||
-------------------- Number of bytes per scanline --------------------
|
||
Parameters:
|
||
* eax = 61 - function number
|
||
* ebx = 3 - subfunction number
|
||
Returned value:
|
||
* eax = number of bytes occupied by one scanline
|
||
(horizontal line on the screen)
|
||
|
||
======================================================================
|
||
===== Function 62, subfunction 0 - get version of PCI-interface. =====
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 62 - function number
|
||
* bl = 0 - subfunction number
|
||
Returned value:
|
||
* eax = -1 - PCI access is disabled; otherwise
|
||
* ah.al = version of PCI-interface (ah=version, al=subversion)
|
||
* high word of eax is zeroed
|
||
Remarks:
|
||
* Previously low-level access to PCI for applications must be
|
||
enabled by subfunction 12 of function 21.
|
||
* If PCI BIOS is not supported, the value of ax is undefined.
|
||
|
||
======================================================================
|
||
==== Function 62, subfunction 1 - get number of the last PCI-bus. ====
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 62 - function number
|
||
* bl = 1 - subfunction number
|
||
Returned value:
|
||
* eax = -1 - access to PCI is disabled; otherwise
|
||
* al = number of the last PCI-bus; other bytes of eax are destroyed
|
||
Remarks:
|
||
* Previously low-level access to PCI for applications must be
|
||
enabled by subfunction 12 of function 21.
|
||
* If PCI BIOS is not supported, the value of ax is undefined.
|
||
|
||
======================================================================
|
||
===================== Function 62, subfunction 2 =====================
|
||
===== Get mechanism of addressing to the PCI configuration space. ====
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 62 - function number
|
||
* bl = 2 - subfunction number
|
||
Returned value:
|
||
* eax = -1 - access to PCI is disabled; otherwise
|
||
* al = mechanism (1 or 2); other bytes of eax are destroyed
|
||
Remarks:
|
||
* Previously low-level access to PCI for applications must be
|
||
enabled by subfunction 12 of function 21.
|
||
* Addressing mechanism is selected depending on
|
||
equipment characteristics.
|
||
* Subfunctions of read and write work automatically
|
||
with the selected mechanism.
|
||
|
||
======================================================================
|
||
======== Function 62, subfunctions 4,5,6 - read PCI-register. ========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 62 - function number
|
||
* bl = 4 - read byte
|
||
* bl = 5 - read word
|
||
* bl = 6 - read dword
|
||
* bh = number of PCI-bus
|
||
* ch = dddddfff, where ddddd = number of the device on the bus,
|
||
fff = function number of device
|
||
* cl = number of register (must be even for bl=5,
|
||
divisible by 4 for bl=6)
|
||
Returned value:
|
||
* eax = -1 - error (access to PCI is disabled or parameters
|
||
are not supported); otherwise
|
||
* al/ax/eax (depending on requested size) contains the data;
|
||
the other part of register eax is destroyed
|
||
Remarks:
|
||
* Previously low-level access to PCI for applications must be
|
||
enabled by subfunction 12 of function 21.
|
||
* Access mechanism 2 supports only 16 devices on a bus and ignores
|
||
function number. To get access mechanism use subfunction 2.
|
||
* Some registers are standard and exist for all devices, some are
|
||
defined by the concrete device. The list of registers of the
|
||
first type can be found e.g. in famous
|
||
Interrupt List by Ralf Brown
|
||
(http://www.pobox.com/~ralf/files.html,
|
||
ftp://ftp.cs.cmu.edu/afs/cs/user/ralf/pub/);
|
||
registers of the second type must be listed
|
||
in the device documentation.
|
||
|
||
======================================================================
|
||
====== Function 62, subfunctions 8,9,10 - write to PCI-register. =====
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 62 - function number
|
||
* bl = 8 - write byte
|
||
* bl = 9 - write word
|
||
* bl = 10 - write dword
|
||
* bh = number of PCI-bus
|
||
* ch = dddddfff, where ddddd = number of the device on the bus,
|
||
fff = function number of device
|
||
* cl = number of register (must be even for bl=9,
|
||
divisible by 4 for bl=10)
|
||
* dl/dx/edx (depending on requested size) contatins
|
||
the data to write
|
||
Returned value:
|
||
* eax = -1 - error (access to PCI is disabled or parameters
|
||
are not supported)
|
||
* eax = 0 - success
|
||
Remarks:
|
||
* Previously low-level access to PCI for applications must be
|
||
enabled by subfunction 12 of function 21.
|
||
* Access mechanism 2 supports only 16 devices on a bus and ignores
|
||
function number. To get access mechanism use subfunction 2.
|
||
* Some registers are standard and exist for all devices, some are
|
||
defined by the concrete device. The list of registers of the
|
||
first type can be found e.g. in famous Interrupt List by
|
||
Ralf Brown; registers of the second type must be listed
|
||
in the device documentation.
|
||
|
||
======================================================================
|
||
============== Function 63 - work with the debug board. ==============
|
||
======================================================================
|
||
The debug board is the global system buffer (with the size
|
||
4096 bytes), to which any program can write (generally speaking,
|
||
arbitrary) data and from which other program can read these data.
|
||
By the agreement written data are text strings interpreted as
|
||
debug messages on a course of program execution. The kernel in
|
||
some situations also writes to the debug board information on
|
||
execution of some functions; by the agreement kernel messages
|
||
begins from the prefix "K : ".
|
||
For view of the debug board the application 'board' was created,
|
||
which reads data from the buffer and displays them in its window.
|
||
'board' interpretes the sequence of codes 13,10 as newline.
|
||
A character with null code in an end of line is not necessary,
|
||
but also does not prevent.
|
||
Because debugger has been written, the value of the debug board
|
||
has decreased, as debugger allows to inspect completely a course of
|
||
program execution without any efforts from the direction of program
|
||
itself. Nevertheless in some cases the debug board is still useful.
|
||
|
||
----------------------------- Write byte -----------------------------
|
||
Parameters:
|
||
* eax = 63 - function number
|
||
* ebx = 1 - subfunction number
|
||
* cl = data byte
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* Byte is written to the buffer. Buffer size is 512 bytes.
|
||
At buffer overflow all obtained data are lost.
|
||
* For output to the debug board of more complicated objects
|
||
(strings, numbers) it is enough to call this function in cycle.
|
||
It is possible not to write the appropriate code manually and use
|
||
file 'debug.inc', which is included into the distributive.
|
||
|
||
----------------------------- Read byte ------------------------------
|
||
Takes away byte from the buffer.
|
||
Parameters:
|
||
* eax = 63 - function number
|
||
* ebx = 2 - subfunction number
|
||
Returned value:
|
||
* eax = ebx = 0 - the buffer is empty
|
||
* eax = byte, ebx = 1 - byte was successfully read
|
||
|
||
======================================================================
|
||
============== Function 64 - resize application memory. ==============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 64 - function number
|
||
* ebx = 1 - unique subfunction
|
||
* ecx = new memory size
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - not enough memory
|
||
Remarks:
|
||
* There is another way to dynamically allocate/free memory -
|
||
subfunctions 11, 12, 13 of function 68.
|
||
* The function cannot be used together with 68.11, 68.12, 68.13.
|
||
The function call will be ignored after creation of process heap
|
||
with function 68.11.
|
||
|
||
======================================================================
|
||
======== Function 65 - draw image with palette in the window. ========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 65 - function number
|
||
* ebx = pointer to the image
|
||
* ecx = [size on axis x]*65536 + [size on axis y]
|
||
* edx = [coordinate on axis x]*65536 + [coordinate on axis y]
|
||
* esi = number of bits per pixel, must be 8, 24 or 32
|
||
* edi = pointer to palette (256 colors 0x00RRGGBB);
|
||
ignored when esi = 24 and 32
|
||
* ebp = offset of next row data relative to previous row data
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* Coordinates of the image are coordinates of the upper left corner
|
||
of the image relative to the window.
|
||
* Size of the image in bytes is xsize*ysize.
|
||
* Each byte of image is index in the palette.
|
||
* If the image uses less than 256 colors, palette size may be
|
||
less than 256 too.
|
||
* The call to function 7 is equivalent to call to this function
|
||
with esi=24, ebp=0.
|
||
|
||
======================================================================
|
||
================== Function 66 - work with keyboard. =================
|
||
======================================================================
|
||
The input mode influences results of reading keys by function 2.
|
||
When a program loads, ASCII input mode is set for it.
|
||
|
||
-------------- Subfunction 1 - set keyboard input mode. --------------
|
||
Parameters:
|
||
* eax = 66 - function number
|
||
* ebx = 1 - subfunction number
|
||
* ecx = mode:
|
||
* 0 = normal (ASCII-characters)
|
||
* 1 = scancodes
|
||
Returned value:
|
||
* function does not return value
|
||
|
||
-------------- Subfunction 2 - get keyboard input mode. --------------
|
||
Parameters:
|
||
* eax = 66 - function number
|
||
* ebx = 2 - subfunction number
|
||
Returned value:
|
||
* eax = current mode
|
||
|
||
------------ Subfunction 3 - get status of control keys. -------------
|
||
Parameters:
|
||
* eax = 66 - function number
|
||
* ebx = 3 - subfunction number
|
||
Returned value:
|
||
* eax = bit mask:
|
||
* bit 0 (mask 1): left Shift is pressed
|
||
* bit 1 (mask 2): right Shift is pressed
|
||
* bit 2 (mask 4): left Ctrl is pressed
|
||
* bit 3 (mask 8): right Ctrl is pressed
|
||
* bit 4 (mask 0x10): left Alt is pressed
|
||
* bit 5 (mask 0x20): right Alt is pressed
|
||
* bit 6 (mask 0x40): CapsLock is on
|
||
* bit 7 (mask 0x80): NumLock is on
|
||
* bit 8 (mask 0x100): ScrollLock is on
|
||
* other bits are cleared
|
||
|
||
-------------- Subfunction 4 - set system-wide hotkey. ---------------
|
||
When hotkey is pressed, the system notifies only those applications,
|
||
which have installed it; the active application (which receives
|
||
all normal input) does not receive such keys.
|
||
The notification consists in sending event with the code 2.
|
||
Reading hotkey is the same as reading normal key - by function 2.
|
||
Parameters:
|
||
* eax = 66 - function number
|
||
* ebx = 4 - subfunction number
|
||
* cl determines key scancode;
|
||
use cl=0 to give combinations such as Ctrl+Shift
|
||
* edx = 0xXYZ determines possible states of control keys:
|
||
* Z (low 4 bits) determines state of LShift and RShift:
|
||
* 0 = no key must be pressed;
|
||
* 1 = exactly one key must be pressed;
|
||
* 2 = both keys must be pressed;
|
||
* 3 = must be pressed LShift, but not RShift;
|
||
* 4 = must be pressed RShift, but not LShift
|
||
* Y - similar for LCtrl and RCtrl;
|
||
* X - similar for LAlt and RAlt
|
||
Returned value:
|
||
* eax=0 - success
|
||
* eax=1 - too mant hotkeys (maximum 256 are allowed)
|
||
Remarks:
|
||
* Hotkey can work either at pressing or at release. Release
|
||
scancode of a key is more on 128 than pressing scancode
|
||
(i.e. high bit is set).
|
||
* Several applications can set the same combination;
|
||
all such applications will be informed on pressing
|
||
such combination.
|
||
|
||
-------------- Subfunction 5 - delete installed hotkey. --------------
|
||
Parameters:
|
||
* eax = 66 - function number
|
||
* ebx = 5 - subfunction number
|
||
* cl = scancode of key and edx = 0xXYZ the same as in subfunction 4
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - there is no such hotkey
|
||
Remarks:
|
||
* When a process/thread terminates, all hotkey installed by it are
|
||
deleted.
|
||
* The call to this subfunction does not affect other applications.
|
||
If other application has defined the same combination, it will
|
||
still receive notices.
|
||
|
||
======================================================================
|
||
========= Function 67 - change position/sizes of the window. =========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 67 - function number
|
||
* ebx = new x-coordinate of the window
|
||
* ecx = new y-coordinate of the window
|
||
* edx = new x-size of the window
|
||
* esi = new y-size of the window
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* The value -1 for a parameter means "do not change"; e.g. to move
|
||
the window without resizing it is possible to specify edx=esi=-1.
|
||
* Previously the window must be defined by function 0.
|
||
It sets initial coordinates and sizes of the window.
|
||
* Sizes of the window are understood in sense of function 0,
|
||
that is one pixel less than real sizes.
|
||
* The function call for maximized windows is simply ignored.
|
||
* For windows of appropriate styles position and/or sizes can be
|
||
changed by user; current position and sizes can be obtained by
|
||
call to function 9.
|
||
* The function sends to the window redraw event (with the code 1).
|
||
|
||
======================================================================
|
||
====== Function 68, subfunction 0 - get the task switch counter. =====
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 0 - subfunction number
|
||
Returned value:
|
||
* eax = number of task switches from the system booting
|
||
(modulo 2^32)
|
||
|
||
======================================================================
|
||
======= Function 68, subfunction 1 - switch to the next thread. ======
|
||
======================================================================
|
||
The function completes the current time slice allocated to the
|
||
thread and switches to the next. (Which thread in which process
|
||
will be next, is unpredictable). Later, when execution queue
|
||
will reach the current thread, execution will be continued.
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 1 - subfunction number
|
||
Returned value:
|
||
* function does not return value
|
||
|
||
======================================================================
|
||
============= Function 68, subfunction 2 - cache + rdpmc. ============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 2 - subfunction number
|
||
* ecx = required action:
|
||
* ecx = 0 - enable instruction 'rdpmc'
|
||
(ReaD Performance-Monitoring Counters) for applications
|
||
* ecx = 1 - find out whether cache is disabled/enabled
|
||
* ecx = 2 - enable cache
|
||
* ecx = 3 - disable cache
|
||
Returned value:
|
||
* for ecx=0:
|
||
* eax = the value of cr4
|
||
* for ecx=1:
|
||
* eax = (cr0 and 0x60000000):
|
||
* eax = 0 - cache is on
|
||
* eax <> 0 - cache is off
|
||
* for ecx=2 and ecx=3:
|
||
* function does not return value
|
||
|
||
======================================================================
|
||
=========== Function 68, subfunction 3 - read MSR-register. ==========
|
||
======================================================================
|
||
MSR = Model Specific Register; the complete list of MSR-registers
|
||
of a processor is included to the documentation on it (for example,
|
||
IA-32 Intel Architecture Software Developer's Manual,
|
||
Volume 3, Appendix B); each processor family has its own subset
|
||
of the MSR-registers.
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 3 - subfunction number
|
||
* ecx is ignored
|
||
* edx = MSR address
|
||
Returned value:
|
||
* ebx:eax = high:low dword of the result
|
||
Remarks:
|
||
* If ecx contains nonexistent or not implemented for this processor
|
||
MSR, processor will generate an exception in the kernel, which
|
||
will kill the thread.
|
||
* Previously it is necessary to check, whether MSRs are supported
|
||
as a whole, with the instruction 'cpuid'. Otherwise processor
|
||
will generate other exception in the kernel, which will anyway
|
||
kill the thread.
|
||
|
||
======================================================================
|
||
========= Function 68, subfunction 4 - write to MSR-register. ========
|
||
======================================================================
|
||
MSR = Model Specific Register; the complete list of MSR-registers
|
||
of a processor is included to the documentation on it (for example,
|
||
IA-32 Intel Architecture Software Developer's Manual,
|
||
Volume 3, Appendix B); each processor family has its own subset
|
||
of the MSR-registers.
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 4 - subfunction number
|
||
* ecx is ignored
|
||
* edx = MSR address
|
||
* esi:edi = high:low dword
|
||
Returned value:
|
||
* ebx:eax = copy of esi:edi
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:
|
||
* If ecx contains nonexistent or not implemented for this processor
|
||
MSR, processor will generate an exception in the kernel, which
|
||
will kill the thread.
|
||
* Previously it is necessary to check, whether MSRs are supported
|
||
as a whole, with the instruction 'cpuid'. Otherwise processor
|
||
will generate other exception in the kernel, which will anyway
|
||
kill the thread.
|
||
|
||
======================================================================
|
||
======= Function 68, subfunction 11 - initialize process heap. =======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 11 - subfunction number
|
||
Returned value:
|
||
* eax = 0 - failed
|
||
* otherwise size of created heap
|
||
Remarks:
|
||
* The function call initializes heap, from which one can in future
|
||
allocate and free memory blocks with subfunctions 12 and 13.
|
||
Heap size is equal to total amount of free application memory.
|
||
* The second function call from the same process results in
|
||
returning the size of the existing heap.
|
||
* After creation of the heap calls to function 64 will be ignored.
|
||
|
||
======================================================================
|
||
======== Function 68, subfunction 12 - allocate memory block. ========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 12 - subfunction number
|
||
* ecx = required size in bytes
|
||
Returned value:
|
||
* eax = pointer to the allocated block
|
||
Remarks:
|
||
* Before this call one must initialize process heap by call to
|
||
subfunction 11.
|
||
* The function allocates an integer number of pages (4 Kb) in such
|
||
way that the real size of allocated block is more than or equal to
|
||
requested size.
|
||
|
||
======================================================================
|
||
========== Function 68, subfunction 13 - free memory block. ==========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 13 - subfunction number
|
||
* ecx = pointer to the memory block
|
||
Returned value:
|
||
* eax = 1 - success
|
||
* eax = 0 - failed
|
||
Remarks:
|
||
* The memory block must have been allocated by subfunction 12
|
||
or subfunction 20.
|
||
|
||
======================================================================
|
||
======== Function 68, subfunction 14 - wait for driver notify. =======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 14 - subfunction number
|
||
* ecx = pointer to the buffer for information (8 bytes)
|
||
Returned value:
|
||
* buffer pointed to by ecx contains the following information:
|
||
* +0: dword: constant EV_INTR = 1
|
||
* +4: dword: driver data
|
||
Remarks:
|
||
* The current implementation at wait time uses "heavy" operations
|
||
of task switch.
|
||
|
||
======================================================================
|
||
====== Function 68, subfunction 15 - set FPU exception handler. ======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 15 - subfunction number
|
||
* ecx = address of the new exception handler
|
||
Returned value:
|
||
* eax = address of the old exception handler (0, if it was not set)
|
||
|
||
======================================================================
|
||
============= Function 68, subfunction 16 - load driver. =============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 16 - subfunction number
|
||
* ecx = pointer to ASCIIZ-string with driver name
|
||
Returned value:
|
||
* eax = 0 - failed
|
||
* otherwise eax = driver handle
|
||
Remarks:
|
||
* If the driver was not loaded yet, it is loaded;
|
||
if the driver was loaded yet, nothing happens.
|
||
* Driver name is case-sensitive.
|
||
Maximum length of the name is 16 characters, including
|
||
terminating null character, the rest is ignored.
|
||
* Driver ABC is loaded from file /rd/1/drivers/ABC.obj.
|
||
|
||
======================================================================
|
||
============ Function 68, subfunction 17 - driver control. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 17 - subfunction number
|
||
* ecx = pointer to the control structure:
|
||
* +0: dword: handle of driver
|
||
* +4: dword: code of driver function
|
||
* +8: dword: pointer to input data
|
||
* +12 = +0xC: dword: size of input data
|
||
* +16 = +0x10: dword: pointer to output data
|
||
* +20 = +0x14: dword: size of output data
|
||
Returned value:
|
||
* eax = determined by driver
|
||
Remarks:
|
||
* Function codes and the structure of input/output data
|
||
are defined by driver.
|
||
* Previously one must obtain driver handle by subfunction 16.
|
||
|
||
======================================================================
|
||
====== Function 68, subfunction 18 - set SSE exception handler. ======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 15 - subfunction number
|
||
* ecx = address of the new exception handler
|
||
Returned value:
|
||
* eax = address of the old exception handler (0, if it was not set)
|
||
|
||
======================================================================
|
||
=============== Function 68, subfunction 19 - load DLL. ==============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 19 - subfunction number
|
||
* ecx = pointer to ASCIIZ-string with the full path to DLL
|
||
Returned value:
|
||
* eax = 0 - failed
|
||
* otherwise eax = pointer to DLL export table
|
||
Remarks:
|
||
* Export table is an array of structures of 2 dword's, terminated
|
||
by zero. The first dword in structure points to function name,
|
||
the second dword contains address of function.
|
||
|
||
======================================================================
|
||
======= Function 68, subfunction 20 - reallocate memory block. =======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 68 - function number
|
||
* ebx = 20 - subfunction number
|
||
* ecx = new size in bytes
|
||
* edx = pointer to already allocated block
|
||
Returned value:
|
||
* eax = pointer to the reallocated block, 0 = error
|
||
Remarks:
|
||
* Before this call one must initialize process heap by call to
|
||
subfunction 11.
|
||
* The function allocates an integer number of pages (4 Kb) in such
|
||
way that the real size of allocated block is more than or equal to
|
||
requested size.
|
||
* If edx=0, the function call is equivalent to memory allocation
|
||
with subfunction 12. Otherwise the block at edx
|
||
must be allocated earlier with subfunction 12 or this subfunction.
|
||
* If ecx=0, the function frees memory block at edx and returns 0.
|
||
* The contents of the block are unchanged up to the shorter of
|
||
the new and old sizes.
|
||
|
||
======================================================================
|
||
====================== Fucntion 69 - debugging. ======================
|
||
======================================================================
|
||
A process can load other process as debugged by set of corresponding
|
||
bit by call to subfunction 7 of function 70.
|
||
A process can have only one debugger; one process can debug some
|
||
others. The system notifies debugger on events occuring with
|
||
debugged process. Messages are written to the buffer defined by
|
||
subfunction 0.
|
||
Format of a message:
|
||
* +0: dword: message code
|
||
* +4: dword: PID of debugged process
|
||
* +8: there can be additional data depending on message code
|
||
Message codes:
|
||
* 1 = exception
|
||
* in addition dword-number of the exception is given
|
||
* process is suspended
|
||
* 2 = process has terminated
|
||
* comes at any termination: both through the system function -1,
|
||
and at "murder" by any other process (including debugger itself)
|
||
* 3 = debug exception int 1 = #DB
|
||
* in addition dword-image of the register DR6 is given:
|
||
* bits 0-3: condition of the corresponding breakpoint (set by
|
||
subfunction 9) is satisfied
|
||
* <20><><EFBFBD> 14: exception has occured because of the trace mode
|
||
(flag TF is set TF)
|
||
* process is suspended
|
||
When debugger terminates, all debugged processes are killed.
|
||
If debugger does not want this, it must previously detach by
|
||
subfunction 3.
|
||
|
||
All subfunctions are applicable only to processes/threads started
|
||
from the current by function 58 or 70 with set debugging flag.
|
||
Debugging of multithreaded programs is not supported yet.
|
||
The full list of subfunctions:
|
||
* subfunction 0 - define data area for debug messages
|
||
* subfunction 1 - get contents of registers of debugged thread
|
||
* subfunction 2 - set contents of registers of debugged thread
|
||
* subfunction 3 - detach from debugged process
|
||
* subfunction 4 - suspend debugged thread
|
||
* subfunction 5 - resume debugged thread
|
||
* subfunction 6 - read from the memory of debugged process
|
||
* subfunction 7 - write to the memory of debugged process
|
||
* subfunction 8 - terminate debugged thread
|
||
* subfunction 9 - set/clear hardware breakpoint
|
||
|
||
======================================================================
|
||
= Function 69, subfunction 0 - define data area fror debug messages. =
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 69 - function number
|
||
* ebx = 0 - subfunction number
|
||
* ecx = pointer
|
||
Format of data area:
|
||
* +0: dword: N = buffer size (not including this header)
|
||
* +4: dword: occupied place
|
||
* +8: N*byte: buffer
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* If the size field is negative, the buffer is considered locked
|
||
and at arrival of new message the system will wait.
|
||
For synchronization frame all work with the buffer by operations
|
||
lock/unlock
|
||
neg [bufsize]
|
||
* Data in the buffer are considered as array of items with variable
|
||
length - messages. Format of a message is explained in
|
||
general description.
|
||
|
||
======================================================================
|
||
===================== Function 69, subfunction 1 =====================
|
||
============ Get contents of registers of debugged thread. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 69 - function number
|
||
* ebx = 1 - subfunction number
|
||
* ecx = thread identifier
|
||
* edx = size of context structure, must be 0x28=40 bytes
|
||
* esi = pointer to context structure
|
||
Returned value:
|
||
* function does not return value
|
||
Format of context structure: (FPU is not supported yet)
|
||
* +0: dword: eip
|
||
* +4: dword: eflags
|
||
* +8: dword: eax
|
||
* +12 = +0xC: dword: ecx
|
||
* +16 = +0x10: dword: edx
|
||
* +20 = +0x14: dword: ebx
|
||
* +24 = +0x18: dword: esp
|
||
* +28 = +0x1C: dword: ebp
|
||
* +32 = +0x20: dword: esi
|
||
* +36 = +0x24: dword: edi
|
||
Remarks:
|
||
* If the thread executes code of ring-0, the function returns
|
||
contents of registers of ring-3.
|
||
* Process must be loaded for debugging (as is shown in
|
||
general description).
|
||
|
||
======================================================================
|
||
===================== Function 69, subfunction 2 =====================
|
||
============ Set contents of registers of debugged thread. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 69 - function number
|
||
* ebx = 2 - subfunction number
|
||
* ecx = thread identifier
|
||
* edx = size of context structure, must be 0x28=40 bytes
|
||
Returned value:
|
||
* function does not return value
|
||
Format of context structure is shown in the description of
|
||
subfunction 1.
|
||
Remarks:
|
||
* If the thread executes code of ring-0, the function returns
|
||
contents of registers of ring-3.
|
||
* Process must be loaded for debugging (as is shown in
|
||
general description).
|
||
|
||
======================================================================
|
||
===== Function 69, subfunction 3 - detach from debugged process. =====
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 69 - function number
|
||
* ebx = 3 - subfunction number
|
||
* ecx = identifier
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* If the process was suspended, it resumes execution.
|
||
|
||
======================================================================
|
||
======== Function 69, subfunction 4 - suspend debugged thread. =======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 69 - function number
|
||
* ebx = 4 - subfunction number
|
||
* ecx = thread identifier
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* Process must be loaded for debugging (as is shown in
|
||
general description).
|
||
|
||
======================================================================
|
||
======== Function 69, subfunction 5 - resume debugged thread. ========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 69 - function number
|
||
* ebx = 5 - subfunction number
|
||
* ecx = thread identifier
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* Process must be loaded for debugging (as is shown in
|
||
general description).
|
||
|
||
======================================================================
|
||
= Fucntion 69, subfunction 6 - read from memory of debugged process. =
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 69 - function number
|
||
* ebx = 6 - subfunction number
|
||
* ecx = identifier
|
||
* edx = number of bytes to read
|
||
* esi = address in the memory of debugged process
|
||
* edi = pointer to buffer for data
|
||
Returned value:
|
||
* eax = -1 at an error (invalid PID or buffer)
|
||
* otherwise eax = number of read bytes (possibly, 0,
|
||
if esi is too large)
|
||
Remarks:
|
||
* Process must be loaded for debugging (as is shown in
|
||
general description).
|
||
|
||
======================================================================
|
||
== Function 69, subfunction 7 - write to memory of debugged process. =
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 69 - function number
|
||
* ebx = 7 - subfunction number
|
||
* ecx = identifier
|
||
* edx = number of bytes to write
|
||
* esi = address of memory in debugged process
|
||
* edi = pointer to data
|
||
Returned value:
|
||
* eax = -1 at an error (invalid PID or buffer)
|
||
* otherwise eax = number of written bytes (possibly, 0,
|
||
if esi is too large)
|
||
Remarks:
|
||
* Process must be loaded for debugging (as is shown in
|
||
general description).
|
||
|
||
======================================================================
|
||
======= Function 69, subfunction 8 - terminate debugged thread. ======
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 69 - function number
|
||
* ebx = 8 - subfunction number
|
||
* ecx = identifier
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* Process must be loaded for debugging (as is shown in
|
||
general description).
|
||
* The function is similar to subfunction 2 of function 18
|
||
with two differences: it requires first remark and
|
||
accepts PID rather than slot number.
|
||
|
||
======================================================================
|
||
===== Function 69, subfunction 9 - set/clear hardware breakpoint. ====
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 69 - function number
|
||
* ebx = 9 - subfunction number
|
||
* ecx = thread identifier
|
||
* dl = index of breakpoint, from 0 to 3 inclusively
|
||
* dh = flags:
|
||
* if high bit is cleared - set breakpoint:
|
||
* bits 0-1 - condition:
|
||
* 00 = breakpoint on execution
|
||
* 01 = breakpoint on read
|
||
* 11 = breakpoint on read/write
|
||
* bits 2-3 - length; for breakpoints on exception it must be
|
||
00, otherwise one of
|
||
* 00 = byte
|
||
* 01 = word
|
||
* 11 = dword
|
||
* esi = breakpoint address; must be aligned according to
|
||
the length (i.e. must be even for word breakpoints,
|
||
divisible by 4 for dword)
|
||
* if high bit is set - clear breakpoint
|
||
Returned value:
|
||
* eax = 0 - success
|
||
* eax = 1 - error in the input data
|
||
* eax = 2 - (reserved, is never returned in the current
|
||
implementation) a global breakpoint with that index is already set
|
||
Remarks:
|
||
* Process must be loaded for debugging (as is shown in
|
||
general description).
|
||
* Hardware breakpoints are implemented through DRx-registers of
|
||
the processor, all limitations results from this.
|
||
* The function can reinstall the breakpoint, previously set
|
||
by it (and it does not inform on this).
|
||
Carry on the list of set breakpoints in the debugger.
|
||
* Breakpoints generate debug exception #DB, on which the system
|
||
notifies debugger.
|
||
* Breakpoints on write and read/write act after
|
||
execution of the caused it instruction.
|
||
|
||
======================================================================
|
||
==== Function 70 - work with file system with long names support. ====
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 70
|
||
* ebx = pointer to the information structure
|
||
Returned value:
|
||
* eax = 0 - success; otherwise file system error code
|
||
* some subfunctions return value in other registers too
|
||
General format of the information structure:
|
||
* +0: dword: subfunction number
|
||
* +4: dword: file offset
|
||
* +8: dword: high dword of offset (must be 0) or flags field
|
||
* +12 = +0xC: dword: size
|
||
* +16 = +0x10: dword: pointer to data
|
||
* +20 = +0x14: n db: ASCIIZ-string with the filename
|
||
or
|
||
* +20 = +0x14: db 0
|
||
* +21 = +0x15: dd pointer to ASCIIZ-string with the filename
|
||
Specifications - in documentation on the appropriate subfunction.
|
||
Filename is case-insensitive. Russian letters must be written in
|
||
the encoding cp866 (DOS).
|
||
Format of filename:
|
||
/base/number/dir1/dir2/.../dirn/file,
|
||
where /base/number identifies device, on which file is located:
|
||
one of
|
||
* /RD/1 = /RAMDISK/1 to access ramdisk
|
||
* /FD/1 = /FLOPPYDISK/1 to access first floppy drive,
|
||
/FD/2 = /FLOPPYDISK/2 to access second one
|
||
* /HD0/x, /HD1/x, /HD2/x, /HD3/x to access accordingly to devices
|
||
IDE0 (Primary Master), IDE1 (Primary Slave),
|
||
IDE2 (Secondary Master), IDE3 (Secondary Slave);
|
||
x - partition number on the selected hard drive, varies from 1
|
||
to 255 (on each hard drive the indexing starts from 1)
|
||
* /CD0/1, /CD1/1, /CD2/1, /CD3/1 to access accordingly to
|
||
CD on IDE0 (Primary Master), IDE1 (Primary Slave),
|
||
IDE2 (Secondary Master), IDE3 (Secondary Slave)
|
||
Examples:
|
||
* '/rd/1/kernel.asm',0
|
||
* '/HD0/1/kernel.asm',0
|
||
* '/hd0/2/menuet/pics/tanzania.bmp',0
|
||
* '/hd0/1/Program files/NameOfProgram/SomeFile.SomeExtension',0
|
||
Available subfunctions:
|
||
* subfunction 0 - read file
|
||
* subfunction 1 - read folder
|
||
* subfunction 2 - create/rewrite file
|
||
* subfunction 3 - write to existing file
|
||
* subfunction 4 - set file size
|
||
* subfunction 5 - get attributes of file/folder
|
||
* subfunction 6 - set attributes of file/folder
|
||
* subfunction 7 - start application
|
||
* subfunction 8 - delete file/folder
|
||
* subfunction 9 - create folder
|
||
For CD-drives due to hardware limitations only subfunctions
|
||
0,1,5 and 7 are available, other subfunctions return error
|
||
with code 2.
|
||
|
||
======================================================================
|
||
=== Function 70, subfunction 0 - read file with long names support. ==
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 70 - function number
|
||
* ebx = pointer to the information structure
|
||
Format of the information structure:
|
||
* +0: dword: 0 = subfunction number
|
||
* +4: dword: file offset (in bytes)
|
||
* +8: dword: 0 (reserved for high dword of offset)
|
||
* +12 = +0xC: dword: number of bytes to read
|
||
* +16 = +0x10: dword: pointer to buffer for data
|
||
* +20 = +0x14: ASCIIZ-name of file, the rules of names forming are
|
||
given in the general description
|
||
or
|
||
* +20 = +0x14: db 0
|
||
* +21 = +0x15: dd pointer to ASCIIZ-string with file name
|
||
Returned value:
|
||
* eax = 0 - success, otherwise file system error code
|
||
* ebx = number of read bytes or -1=0xffffffff if file was not found
|
||
Remarks:
|
||
* If file was ended before last requested block was read,
|
||
the function will read as many as it can, and after that return
|
||
eax=6 (EOF).
|
||
* The function does not allow to read folder (returns eax=10,
|
||
access denied).
|
||
|
||
======================================================================
|
||
== Function 70, subfunction 1 - read folder with long names support. =
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 70 - function number
|
||
* ebx = pointer to the information structure
|
||
Format of the information structure:
|
||
* +0: dword: 1 = subfunction number
|
||
* +4: dword: index of starting block (beginning from 0)
|
||
* +8: dword: flags field:
|
||
* bit 0 (mask 1): in what format to return names,
|
||
0=ANSI, 1=UNICODE
|
||
* other bits are reserved and must be set to 0 for the future
|
||
compatibility
|
||
* +12 = +0xC: dword: number of blocks to read
|
||
* +16 = +0x10: dword: pointer to buffer for data, buffer size
|
||
must be not less than 32 + [+12]*560 bytes
|
||
* +20 = +0x14: ASCIIZ-name of folder, the rules of names forming are
|
||
given in the general description
|
||
or
|
||
* +20 = +0x14: db 0
|
||
* +21 = +0x15: dd pointer to ASCIIZ-string with file name
|
||
Returned value:
|
||
* eax = 0 - success, otherwise file system error code
|
||
* ebx = number of files, information on which was written to
|
||
the buffer, or -1=0xffffffff, if folder was not found
|
||
Structure of the buffer:
|
||
* +0: 32*byte: header
|
||
* +32 = +0x20: n1*byte: block with information on file 1
|
||
* +32+n1: n2*byte: block with information on file 2
|
||
* ...
|
||
Structure of header:
|
||
* +0: dword: version of structure (current is 1)
|
||
* +4: dword: number of placed blocks; is not greater than requested
|
||
in the field +12 of information structure; can be less, if
|
||
there are no more files in folder (the same as in ebx)
|
||
* +8: dword: total number of files in folder
|
||
* +12 = +0xC: 20*byte: reserved (zeroed)
|
||
Structure of block of data for folder entry (BDFE):
|
||
* +0: dword: attributes of file:
|
||
* bit 0 (mask 1): file is read-only
|
||
* bit 1 (mask 2): file is hidden
|
||
* bit 2 (mask 4): file is system
|
||
* bit 3 (mask 8): this is not a file but volume label
|
||
(for one partition meets no more than once and
|
||
only in root folder)
|
||
* bit 4 (mask 0x10): this is a folder
|
||
* bit 5 (mask 0x20): file was not archived - many archivation
|
||
programs have an option to archive only files with this bit set,
|
||
and after archiving this bit is cleared - it can be useful
|
||
for automatically creating of backup-archives as at writing
|
||
this bit is usually set
|
||
* +4: byte: type of name data:
|
||
(coincides with bit 0 of flags in the information structure)
|
||
* 0 = ASCII = 1-byte representation of each character
|
||
* 1 = UNICODE = 2-byte representation of each character
|
||
* +5: 3*byte: reserved (zero)
|
||
* +8: 4*byte: time of file creation
|
||
* +12 = +0xC: 4*byte: date of file creation
|
||
* +16 = +0x10: 4*byte: time of last access (read or write)
|
||
* +20 = +0x14: 4*byte: date of last access
|
||
* +24 = +0x18: 4*byte: time of last modification
|
||
* +28 = +0x1C: 4*byte: date of last modification
|
||
* +32 = +0x20: qword: file size in bytes (up to 16777216 Tb)
|
||
* +40 = +0x28: name
|
||
* for ASCII format: maximum length is 263 characters
|
||
(263 bytes), byte after the name has value 0
|
||
* for UNICODE format: maximum length is 259 characters
|
||
(518 bytes), 2 bytes after the name have value 0
|
||
Time format:
|
||
* +0: byte: seconds
|
||
* +1: byte: minutes
|
||
* +2: byte: hours
|
||
* +3: byte: reserved (0)
|
||
* for example, 23.59.59 is written as (in hex) 3B 3B 17 00
|
||
Date format:
|
||
* +0: byte: day
|
||
* +1: byte: month
|
||
* +2: word: year
|
||
* for example, 25.11.1979 is written as (in hex) 19 0B BB 07
|
||
Remarks:
|
||
* If BDFE contains ASCII name, the length of BDFE is 304 bytes,
|
||
if UNICODE name - 560 bytes. Value of length is aligned
|
||
on 16-byte bound (to accelerate processing in CPU cache).
|
||
* First character after a name is zero (ASCIIZ-string). The further
|
||
data contain garbage.
|
||
* If files in folder were ended before requested number was read,
|
||
the function will read as many as it can, and after that return
|
||
eax=6 (EOF).
|
||
* Any folder on the disk, except for root, contains two special
|
||
entries "." and "..", identifying accordingly the folder itself
|
||
and the parent folder.
|
||
* The function allows also to read virtual folders "/", "/rd",
|
||
"/fd", "/hd[n]", thus attributes of subfolders are set to 0x10,
|
||
and times and dates are zeroed. An alternative way to get the
|
||
equipment information - subfunction 11 of function 18.
|
||
|
||
======================================================================
|
||
===================== Function 70, subfunction 2 =====================
|
||
============ Create/rewrite file with long names support. ============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 70 - function number
|
||
* ebx = pointer to the information structure
|
||
Format of the information structure:
|
||
* +0: dword: 2 = subfunction number
|
||
* +4: dword: 0 (reserved)
|
||
* +8: dword: 0 (reserved)
|
||
* +12 = +0xC: dword: number of bytes to read
|
||
* +16 = +0x10: dword: pointer to data
|
||
* +20 = +0x14: ASCIIZ-name of file, the rules of names forming are
|
||
given in the general description
|
||
or
|
||
* +20 = +0x14: db 0
|
||
* +21 = +0x15: dd pointer to ASCIIZ-string with file name
|
||
Returned value:
|
||
* eax = 0 - success, otherwise file system error code
|
||
* ebx = number of written bytes (possibly 0)
|
||
Remarks:
|
||
* If a file with given name did not exist, it is created;
|
||
if it existed, it is rewritten.
|
||
* If there is not enough free space on disk, the function will
|
||
write as many as can and then return error code 8.
|
||
* The function is not supported for CD (returns error code 2).
|
||
|
||
======================================================================
|
||
===================== Function 70, subfunction 3 =====================
|
||
=========== Write to existing file with long names support. ==========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 70 - function number
|
||
* ebx = pointer to the information structure
|
||
Format of the information structure:
|
||
* +0: dword: 3 = subfunction number
|
||
* +4: dword: file offset (in bytes)
|
||
* +8: dword: high dword of offset (must be 0 for FAT)
|
||
* +12 = +0xC: dword: number of bytes to write
|
||
* +16 = +0x10: dword: pointer to data
|
||
* +20 = +0x14: ASCIIZ-name of file, the rules of names forming are
|
||
given in the general description
|
||
or
|
||
* +20 = +0x14: db 0
|
||
* +21 = +0x15: dd pointer to ASCIIZ-string with file name
|
||
Returned value:
|
||
* eax = 0 - success, otherwise file system error code
|
||
* ebx = number of written bytes (possibly 0)
|
||
Remarks:
|
||
* The file must already exist, otherwise function returns eax=5.
|
||
* The only result of write 0 bytes is update in the file attributes
|
||
date/time of modification and access to the current date/time.
|
||
* If beginning and/or ending position is greater than file size
|
||
(except for the previous case), the file is expanded to needed
|
||
size with zero characters.
|
||
* The function is not supported for CD (returns error code 2).
|
||
|
||
======================================================================
|
||
============ Function 70, subfunction 4 - set end of file. ===========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 70 - function number
|
||
* ebx = pointer to the information structure
|
||
Format of the information structure:
|
||
* +0: dword: 4 = subfunction number
|
||
* +4: dword: low dword of new file size
|
||
* +8: dword: high dword of new file size (must be 0 for FAT)
|
||
* +12 = +0xC: dword: 0 (reserved)
|
||
* +16 = +0x10: dword: 0 (reserved)
|
||
* +20 = +0x14: ASCIIZ-name of file, the rules of names forming are
|
||
given in the general description
|
||
or
|
||
* +20 = +0x14: db 0
|
||
* +21 = +0x15: dd pointer to ASCIIZ-string with file name
|
||
Returned value:
|
||
* eax = 0 - success, otherwise file system error code
|
||
* ebx destroyed
|
||
Remarks:
|
||
* If the new file size is less than old one, file is truncated.
|
||
If the new size is greater than old one, file is expanded with
|
||
characters with code 0. If the new size is equal to old one,
|
||
the only result of call is set date/time of modification and
|
||
access to the current date/time.
|
||
* If there is not enough free space on disk for expansion, the
|
||
function will expand to maximum possible size and then return
|
||
error code 8.
|
||
* The function is not supported for CD (returns error code 2).
|
||
|
||
======================================================================
|
||
==== Function 70, subfunction 5 - get information on file/folder. ====
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 70 - function number
|
||
* ebx = pointer to the information structure
|
||
Format of the information structure:
|
||
* +0: dword: 5 = subfunction number
|
||
* +4: dword: 0 (reserved)
|
||
* +8: dword: 0 (reserved)
|
||
* +12 = +0xC: dword: 0 (reserved)
|
||
* +16 = +0x10: dword: pointer to buffer for data (40 bytes)
|
||
* +20 = +0x14: ASCIIZ-name of file, the rules of names forming are
|
||
given in the general description
|
||
or
|
||
* +20 = +0x14: db 0
|
||
* +21 = +0x15: dd pointer to ASCIIZ-string with file name
|
||
Returned value:
|
||
* eax = 0 - success, otherwise file system error code
|
||
* ebx destroyed
|
||
Information on file is returned in the BDFE format (block of data
|
||
for folder entry), explained in the description of
|
||
subfunction 1, but without filename
|
||
(i.e. only first 40 = 0x28 bytes).
|
||
Remarks:
|
||
* The function does not support virtual folders such as /, /rd and
|
||
root folders like /rd/1.
|
||
|
||
======================================================================
|
||
===== Function 70, subfunction 6 - set attributes of file/folder. ====
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 70 - function number
|
||
* ebx = pointer to the information structure
|
||
Format of the information structure:
|
||
* +0: dword: 6 = subfunction number
|
||
* +4: dword: 0 (reserved)
|
||
* +8: dword: 0 (reserved)
|
||
* +12 = +0xC: dword: 0 (reserved)
|
||
* +16 = +0x10: dword: pointer to buffer with attributes (32 bytes)
|
||
* +20 = +0x14: ASCIIZ-name of file, the rules of names forming are
|
||
given in the general description
|
||
or
|
||
* +20 = +0x14: db 0
|
||
* +21 = +0x15: dd pointer to ASCIIZ-string with file name
|
||
Returned value:
|
||
* eax = 0 - success, otherwise file system error code
|
||
* ebx destroyed
|
||
File attributes are first 32 bytes in BDFE (block of data
|
||
for folder entry), explained in the description of subfunction 1
|
||
(that is, without name and size of file). Attribute
|
||
file/folder/volume label (bits 3,4 in dword +0) is not changed.
|
||
Byte +4 (name format) is ignored.
|
||
Remarks:
|
||
* The function does not support virtual folders such as /, /rd and
|
||
root folders like /rd/1.
|
||
* The function is not supported for CD (returns error code 2).
|
||
|
||
======================================================================
|
||
=========== Function 70, subfunction 7 - start application. ==========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 70 - function number
|
||
* ebx = pointer to the information structure
|
||
Format of the information structure:
|
||
* +0: dword: 7 = subfunction number
|
||
* +4: dword: flags field:
|
||
* <20><><EFBFBD> 0: start process as debugged
|
||
* other bits are reserved and must be set to 0
|
||
* +8: dword: 0 or pointer to ASCIIZ-string with parameters
|
||
* +12 = +0xC: dword: 0 (reserved)
|
||
* +16 = +0x10: dword: 0 (reserved)
|
||
* +20 = +0x14: ASCIIZ-name of file, the rules of names forming are
|
||
given in the general description
|
||
or
|
||
* +20 = +0x14: db 0
|
||
* +21 = +0x15: dd pointer to ASCIIZ-string with file name
|
||
Returned value:
|
||
* eax > 0 - program is loaded, eax contains PID
|
||
* eax < 0 - an error has occured, -eax contains
|
||
file system error code
|
||
* ebx destroyed
|
||
Remarks:
|
||
* Command line must be terminated by the character with the code 0
|
||
(ASCIIZ-string); function takes into account either all characters
|
||
up to terminating zero inclusively or first 256 character
|
||
regarding what is less.
|
||
* If the process is started as debugged, it is created in
|
||
the suspended state; to run use subfunction 5 of function 69.
|
||
|
||
======================================================================
|
||
========== Function 70, subfunction 8 - delete file/folder. ==========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 70 - function number
|
||
* ebx = pointer to the information structure
|
||
Format of the information structure:
|
||
* +0: dword: 8 = subfunction number
|
||
* +4: dword: 0 (reserved)
|
||
* +8: dword: 0 (reserved)
|
||
* +12 = +0xC: dword: 0 (reserved)
|
||
* +16 = +0x10: dword: 0 (reserved)
|
||
* +20 = +0x14: ASCIIZ-name of file, the rules of names forming are
|
||
given in the general description
|
||
or
|
||
* +20 = +0x14: db 0
|
||
* +21 = +0x15: dd pointer to ASCIIZ-string with file name
|
||
Returned value:
|
||
* eax = 0 - success, otherwise file system error code
|
||
* ebx destroyed
|
||
Remarks:
|
||
* The function is not supported for CD (returns error code 2).
|
||
* The function can delete only empty folders (attempt to delete
|
||
nonempty folder results in error with code 10, "access denied").
|
||
|
||
======================================================================
|
||
============= Function 70, subfunction 9 - create folder. ============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 70 - function number
|
||
* ebx = pointer to the information structure
|
||
Format of the information structure:
|
||
* +0: dword: 9 = subfunction number
|
||
* +4: dword: 0 (reserved)
|
||
* +8: dword: 0 (reserved)
|
||
* +12 = +0xC: dword: 0 (reserved)
|
||
* +16 = +0x10: dword: 0 (reserved)
|
||
* +20 = +0x14: ASCIIZ-name of folder, the rules of names forming are
|
||
given in the general description
|
||
or
|
||
* +20 = +0x14: db 0
|
||
* +21 = +0x15: dd pointer to ASCIIZ-string with folder name
|
||
Returned value:
|
||
* eax = 0 - success, otherwise file system error code
|
||
* ebx destroyed
|
||
Remarks:
|
||
* The function is not supported for CD (returns error code 2).
|
||
* The parent folder must already exist.
|
||
* If target folder already exists, function returns success (eax=0).
|
||
|
||
======================================================================
|
||
========== Function 71, subfunction 1 - set window caption. ==========
|
||
======================================================================
|
||
Parameters:
|
||
* eax = 71 - function number
|
||
* ebx = 1 - subfunction number
|
||
* ecx = pointer to caption string
|
||
Returned value:
|
||
* function does not return value
|
||
Remarks:
|
||
* String must be in the ASCIIZ-format. Disregarding real string
|
||
length, no more than 255 characters are drawn.
|
||
* Pass NULL in ecx to remove caption.
|
||
|
||
======================================================================
|
||
=============== Function -1 - terminate thread/process ===============
|
||
======================================================================
|
||
Parameters:
|
||
* eax = -1 - function number
|
||
Returned value:
|
||
* function does not return neither value nor control
|
||
Remarks:
|
||
* If the process did not create threads obviously, it has only
|
||
one thread, which termination results in process termination.
|
||
* If the current thread is last in the process, its termination
|
||
also results in process terminates.
|
||
* This function terminates the current thread. Other thread can be
|
||
killed by call to subfunction 2 of function 18.
|
||
|
||
======================================================================
|
||
=========================== List of events ===========================
|
||
======================================================================
|
||
Next event can be retrieved by the call of one from functions 10
|
||
(to wait for event), 11 (to check without waiting), 23
|
||
(to wait during the given time).
|
||
These functions return only those events, which enter into a mask set
|
||
by function 40. By default it is first three,
|
||
there is enough for most applications.
|
||
Codes of events:
|
||
* 1 = redraw event (is reset by call to function 0)
|
||
* 2 = key on keyboard is pressed (acts, only when the window is
|
||
active) or hotkey is pressed; is reset, when all keys from
|
||
the buffer are read out by function 2
|
||
* 3 = button is pressed, defined earlier by function 8
|
||
(or close button, created implicitly by function 0;
|
||
minimize button is handled by the system and sends no message;
|
||
acts, only when the window is active;
|
||
is reset when all buttons from the buffer
|
||
are read out by function 17)
|
||
* 4 = reserved (in current implementation never comes even after
|
||
unmasking by function 40)
|
||
* 5 = the desktop background is redrawed (is reset automatically
|
||
after redraw, so if in redraw time program does not wait and
|
||
does not check events, it will not remark this event)
|
||
* 6 = mouse event (something happened - button pressing or moving;
|
||
is reset at reading)
|
||
* 7 = IPC event (see function 60 -
|
||
Inter Process Communication; is reset at reading)
|
||
* 8 = network event (is reset at reading)
|
||
* 9 = debug event (is reset at reading; see
|
||
debug subsystem)
|
||
* 16..31 = event with appropriate IRQ
|
||
(16=IRQ0, 31=IRQ15) (is reset after reading all IRQ data)
|
||
|
||
======================================================================
|
||
=================== Error codes of the file system ===================
|
||
======================================================================
|
||
* 0 = success
|
||
* 1 = base and/or partition of a hard disk is not defined
|
||
(by subfunctions 7, 8 of function 21)
|
||
* 2 = function is not supported for the given file system
|
||
* 3 = unknown file system
|
||
* 4 = reserved, is never returned in the current implementation
|
||
* 5 = file not found
|
||
* 6 = end of file, EOF
|
||
* 7 = pointer lies outside of application memory
|
||
* 8 = disk is full
|
||
* 9 = FAT table is destroyed
|
||
* 10 = access denied
|
||
* 11 = device error
|
||
Application start functions can return also following errors:
|
||
* 30 = 0x1E = not enough memory
|
||
* 31 = 0x1F = file is not executable
|
||
* 32 = 0x20 = too many processes
|