807 lines
22 KiB
PHP
807 lines
22 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;; ;;
|
||
;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
|
||
;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa ;;
|
||
;; Distributed under terms of the GNU General Public License ;;
|
||
;; ;;
|
||
;; BOOTCODE.INC ;;
|
||
;; ;;
|
||
;; KolibriOS 16-bit loader, ;;
|
||
;; based on bootcode for MenuetOS ;;
|
||
;; ;;
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
|
||
$Revision$
|
||
|
||
|
||
;==========================================================================
|
||
;
|
||
; 16 BIT FUNCTIONS
|
||
;
|
||
;==========================================================================
|
||
|
||
use16
|
||
|
||
putchar:
|
||
; in: al=character
|
||
mov ah, 0Eh
|
||
mov bh, 0
|
||
int 10h
|
||
ret
|
||
|
||
print:
|
||
; in: si->string
|
||
mov al, 186
|
||
call word putchar
|
||
mov al, ' '
|
||
call word putchar
|
||
|
||
printplain:
|
||
; in: si->string
|
||
pusha
|
||
lodsb
|
||
@@:
|
||
call putchar
|
||
lodsb
|
||
cmp al, 0
|
||
jnz @b
|
||
popa
|
||
ret
|
||
|
||
getkey:
|
||
; get number in range [bl,bh] (bl,bh in ['0'..'9'])
|
||
; in: bx=range
|
||
; out: ax=digit (1..9, 10 for 0)
|
||
mov ah, 0
|
||
int 16h
|
||
cmp al, bl
|
||
jb getkey
|
||
cmp al, bh
|
||
ja getkey
|
||
push ax
|
||
call putchar
|
||
pop ax
|
||
and ax, 0Fh
|
||
jnz @f
|
||
mov al, 10
|
||
@@:
|
||
ret
|
||
|
||
setcursor:
|
||
; in: dl=column, dh=row
|
||
mov ah, 2
|
||
mov bh, 0
|
||
int 10h
|
||
ret
|
||
|
||
macro _setcursor row,column
|
||
{
|
||
mov dx, row*256 + column
|
||
call setcursor
|
||
}
|
||
|
||
boot_read_floppy:
|
||
push si
|
||
xor si, si
|
||
mov ah, 2 ; read
|
||
@@:
|
||
push ax
|
||
int 0x13
|
||
pop ax
|
||
jnc @f
|
||
inc si
|
||
cmp si, 10
|
||
jb @b
|
||
mov si, badsect
|
||
sayerr_plain:
|
||
call printplain
|
||
jmp $
|
||
@@:
|
||
pop si
|
||
ret
|
||
|
||
; convert abs. sector number (AX) to BIOS T:H:S
|
||
; sector number = (abs.sector%BPB_SecPerTrk)+1
|
||
; pre.track number = (abs.sector/BPB_SecPerTrk)
|
||
; head number = pre.track number%BPB_NumHeads
|
||
; track number = pre.track number/BPB_NumHeads
|
||
; Return: cl - sector number
|
||
; ch - track number
|
||
; dl - drive number (0 = a:)
|
||
; dh - head number
|
||
conv_abs_to_THS:
|
||
push bx
|
||
mov bx,word [BPB_SecPerTrk]
|
||
xor dx,dx
|
||
div bx
|
||
inc dx
|
||
mov cl, dl ; cl = sector number
|
||
mov bx,word [BPB_NumHeads]
|
||
xor dx,dx
|
||
div bx
|
||
; !!!!!!! ax = track number, dx = head number
|
||
mov ch,al ; ch=track number
|
||
xchg dh,dl ; dh=head number
|
||
mov dl,0 ; dl=0 (drive 0 (a:))
|
||
pop bx
|
||
retn
|
||
|
||
sayerr:
|
||
call print
|
||
jmp $
|
||
|
||
; needed variables
|
||
BPB_SecPerTrk dw 0 ; sectors per track
|
||
BPB_NumHeads dw 0 ; number of heads
|
||
BPB_FATSz16 dw 0 ; size of FAT
|
||
BPB_RootEntCnt dw 0 ; count of root dir. entries
|
||
BPB_BytsPerSec dw 0 ; bytes per sector
|
||
BPB_RsvdSecCnt dw 0 ; number of reserved sectors
|
||
BPB_TotSec16 dw 0 ; count of the sectors on the volume
|
||
BPB_SecPerClus db 0 ; number of sectors per cluster
|
||
BPB_NumFATs db 0 ; number of FAT tables
|
||
abs_sector_adj dw 0 ; adjustment to make abs. sector number
|
||
end_of_FAT dw 0 ; end of FAT table
|
||
FirstDataSector dw 0 ; begin of data
|
||
|
||
;=========================================================================
|
||
;
|
||
; 16 BIT CODE
|
||
;
|
||
;=========================================================================
|
||
|
||
include 'bootvesa.inc' ;Include source for boot vesa
|
||
|
||
start_of_code:
|
||
|
||
cld
|
||
|
||
xor ecx, ecx
|
||
xor edx, edx
|
||
xor esi, esi
|
||
xor edi, edi
|
||
xor ebp, ebp
|
||
|
||
mov eax, 0x3000
|
||
mov ss, ax
|
||
mov esp, 0EC00h
|
||
|
||
mov ebx, 0x1000
|
||
mov ds, bx
|
||
mov es, bx
|
||
|
||
; set videomode
|
||
mov ax, 3
|
||
int 0x10
|
||
|
||
if lang eq ru
|
||
; Load & set russian VGA font (RU.INC)
|
||
mov bp, RU_FNT1 ; RU_FNT1 - First part
|
||
mov bx, 1000h ; 768 bytes
|
||
mov cx, 30h ; 48 symbols
|
||
mov dx, 80h ; 128 - position of first symbol
|
||
mov ax, 1100h
|
||
int 10h
|
||
|
||
mov bp, RU_FNT2 ; RU_FNT2 -Second part
|
||
mov bx, 1000h ; 512 bytes
|
||
mov cx, 20h ; 32 symbols
|
||
mov dx, 0E0h ; 224 - position of first symbol
|
||
mov ax, 1100h
|
||
int 10h
|
||
; End set VGA russian font
|
||
else if lang eq et
|
||
mov bp, ET_FNT ; ET_FNT1
|
||
mov bx, 1000h ;
|
||
mov cx, 255 ; 256 symbols
|
||
xor dx, dx ; 0 - position of first symbol
|
||
mov ax, 1100h
|
||
int 10h
|
||
end if
|
||
|
||
; draw frames
|
||
push 0xb800
|
||
pop es
|
||
xor di, di
|
||
mov ah, 1*16+15
|
||
|
||
; draw top
|
||
mov si, d80x25_top
|
||
mov cx, d80x25_top_num * 80
|
||
@@:
|
||
lodsb
|
||
stosw
|
||
loop @b
|
||
|
||
; draw spaces
|
||
mov si, space_msg
|
||
mov dx, 25 - d80x25_top_num - d80x25_bottom_num
|
||
dfl1:
|
||
push si
|
||
mov cx, 80
|
||
@@:
|
||
lodsb
|
||
stosw
|
||
loop @b
|
||
pop si
|
||
dec dx
|
||
jnz dfl1
|
||
; draw bottom
|
||
mov si, d80x25_bottom
|
||
mov cx, d80x25_bottom_num * 80
|
||
@@:
|
||
lodsb
|
||
stosw
|
||
loop @b
|
||
|
||
mov byte [space_msg+80], 0 ; now space_msg is null terminated
|
||
|
||
_setcursor d80x25_top_num,0
|
||
|
||
push 0
|
||
popf
|
||
sti
|
||
|
||
push 0
|
||
pop es
|
||
and word [es:0x9031], 0
|
||
; \begin{Mario79}
|
||
; find HDD IDE DMA PCI device
|
||
; check for PCI BIOS
|
||
mov ax, 0xB101
|
||
int 0x1A
|
||
jc .nopci
|
||
cmp edx, 'PCI '
|
||
jnz .nopci
|
||
; find PCI class code
|
||
; class 1 = mass storage
|
||
; subclass 1 = IDE controller
|
||
; a) class 1, subclass 1, programming interface 0x80
|
||
mov ax, 0xB103
|
||
mov ecx, 1*10000h + 1*100h + 0x80
|
||
xor si, si ; device index = 0
|
||
int 0x1A
|
||
jnc .found
|
||
; b) class 1, subclass 1, programming interface 0x8A
|
||
mov ax, 0xB103
|
||
mov ecx, 1*10000h + 1*100h + 0x8A
|
||
xor si, si ; device index = 0
|
||
int 0x1A
|
||
jnc .found
|
||
; c) class 1, subclass 1, programming interface 0x85
|
||
mov ax, 0xB103
|
||
mov ecx, 1*10000h + 1*100h + 0x85
|
||
xor si, si
|
||
int 0x1A
|
||
jc .nopci
|
||
.found:
|
||
; get memory base
|
||
mov ax, 0xB10A
|
||
mov di, 0x20 ; memory base is config register at 0x20
|
||
int 0x1A
|
||
jc .nopci
|
||
and cx, 0xFFF0 ; clear address decode type
|
||
mov [es:0x9031], cx
|
||
.nopci:
|
||
; \end{Mario79}
|
||
|
||
mov al, 0xf6 ; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
out 0x60, al
|
||
xor cx, cx
|
||
wait_loop: ; variant 2
|
||
; reading state of port of 8042 controller
|
||
in al, 64h
|
||
and al, 00000010b ; ready flag
|
||
; wait until 8042 controller is ready
|
||
loopnz wait_loop
|
||
|
||
;;;/diamond today 5.02.2008
|
||
; set keyboard typematic rate & delay
|
||
mov al, 0xf3
|
||
out 0x60, al
|
||
xor cx, cx
|
||
@@:
|
||
in al, 64h
|
||
test al, 2
|
||
loopnz @b
|
||
mov al, 0
|
||
out 0x60, al
|
||
xor cx, cx
|
||
@@:
|
||
in al, 64h
|
||
test al, 2
|
||
loopnz @b
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
; --------------- APM ---------------------
|
||
and word [es:0x9044], 0 ; ver = 0.0 (APM not found)
|
||
mov ax, 0x5300
|
||
xor bx, bx
|
||
int 0x15
|
||
jc apm_end ; APM not found
|
||
test cx, 2
|
||
jz apm_end ; APM 32-bit protected-mode interface not supported
|
||
mov [es:0x9044], ax ; Save APM Version
|
||
mov [es:0x9046], cx ; Save APM flags
|
||
|
||
; Write APM ver ----
|
||
and ax, 0xf0f
|
||
add ax, '00'
|
||
mov si, msg_apm
|
||
mov [si + 5], ah
|
||
mov [si + 7], al
|
||
_setcursor 0, 3
|
||
call printplain
|
||
; ------------------
|
||
|
||
mov ax, 0x5304 ; Disconnect interface
|
||
xor bx, bx
|
||
int 0x15
|
||
mov ax, 0x5303 ; Connect 32 bit mode interface
|
||
xor bx, bx
|
||
int 0x15
|
||
|
||
mov [es:0x9040], ebx
|
||
mov [es:0x9050], ax
|
||
mov [es:0x9052], cx
|
||
mov [es:0x9054], dx
|
||
|
||
apm_end:
|
||
_setcursor d80x25_top_num, 0
|
||
|
||
push 0
|
||
pop es
|
||
|
||
noloaderblock:
|
||
; DISPLAY VESA INFORMATION
|
||
call print_vesa_info
|
||
call calc_vmodes_table
|
||
call check_first_parm ;check and enable cursor_pos
|
||
|
||
; \begin{diamond}[30.11.2005]
|
||
cfgmanager:
|
||
; settings:
|
||
; a) preboot_graph = graphical mode
|
||
; preboot_gprobe = probe this mode?
|
||
; b) preboot_dma = use DMA access?
|
||
; c) preboot_vrrm = use VRR?
|
||
; d) preboot_device = from what boot?
|
||
|
||
; determine default settings
|
||
mov [.bSettingsChanged], 0
|
||
|
||
;.preboot_gr_end:
|
||
mov di, preboot_device
|
||
; if image in memory is present and [preboot_device] is uninitialized,
|
||
; set it to use this preloaded image
|
||
cmp byte [di], 0
|
||
jnz .preboot_device_inited
|
||
cmp [.loader_block], -1
|
||
jz @f
|
||
les bx, [.loader_block]
|
||
test byte [es:bx+1], 1
|
||
jz @f
|
||
mov byte [di], 3
|
||
jmp .preboot_device_inited
|
||
@@:
|
||
; otherwise, set [preboot_device] to 1 (default value - boot from floppy)
|
||
mov byte [di], 1
|
||
.preboot_device_inited:
|
||
; following 6 lines set variables to 1 if its current value is 0
|
||
cmp byte [di+preboot_dma-preboot_device], 1
|
||
adc byte [di+preboot_dma-preboot_device], 0
|
||
cmp byte [di+preboot_biosdisk-preboot_device], 1
|
||
adc byte [di+preboot_biosdisk-preboot_device], 0
|
||
cmp byte [di+preboot_vrrm-preboot_device], 1
|
||
adc byte [di+preboot_vrrm-preboot_device], 0
|
||
; notify user
|
||
_setcursor 5,2
|
||
|
||
mov si, linef
|
||
call printplain
|
||
mov si, start_msg
|
||
call print
|
||
mov si, time_msg
|
||
call print
|
||
; get start time
|
||
call .gettime
|
||
mov [.starttime], eax
|
||
mov word [.timer], .newtimer
|
||
mov word [.timer+2], cs
|
||
.printcfg:
|
||
_setcursor 9,0
|
||
mov si, current_cfg_msg
|
||
call print
|
||
mov si, curvideo_msg
|
||
call print
|
||
|
||
call draw_current_vmode
|
||
|
||
mov si, usebd_msg
|
||
cmp [preboot_biosdisk], 1
|
||
call .say_on_off
|
||
mov si, vrrm_msg
|
||
cmp [preboot_vrrm], 1
|
||
call .say_on_off
|
||
mov si, preboot_device_msg
|
||
call print
|
||
mov al, [preboot_device]
|
||
and eax, 7
|
||
mov si, [preboot_device_msgs+eax*2]
|
||
call printplain
|
||
.show_remarks:
|
||
; show remarks in gray color
|
||
mov di, ((21-num_remarks)*80 + 2)*2
|
||
push 0xB800
|
||
pop es
|
||
mov cx, num_remarks
|
||
mov si, remarks
|
||
.write_remarks:
|
||
lodsw
|
||
push si
|
||
xchg ax, si
|
||
mov ah, 1*16+7 ; background: blue (1), foreground: gray (7)
|
||
push di
|
||
.write_remark:
|
||
lodsb
|
||
test al, al
|
||
jz @f
|
||
stosw
|
||
jmp .write_remark
|
||
@@:
|
||
pop di
|
||
pop si
|
||
add di, 80*2
|
||
loop .write_remarks
|
||
.wait:
|
||
_setcursor 25,0 ; out of screen
|
||
; set timer interrupt handler
|
||
cli
|
||
push 0
|
||
pop es
|
||
push dword [es:8*4]
|
||
pop dword [.oldtimer]
|
||
push dword [.timer]
|
||
pop dword [es:8*4]
|
||
; mov eax, [es:8*4]
|
||
; mov [.oldtimer], eax
|
||
; mov eax, [.timer]
|
||
; mov [es:8*4], eax
|
||
sti
|
||
; wait for keypressed
|
||
xor ax,ax
|
||
int 16h
|
||
push ax
|
||
; restore timer interrupt
|
||
; push 0
|
||
; pop es
|
||
mov eax, [.oldtimer]
|
||
mov [es:8*4], eax
|
||
mov [.timer], eax
|
||
_setcursor 7,0
|
||
mov si, space_msg
|
||
call printplain
|
||
; clear remarks and restore normal attributes
|
||
push es
|
||
mov di, ((21-num_remarks)*80 + 2)*2
|
||
push 0xB800
|
||
pop es
|
||
mov cx, num_remarks
|
||
mov ax, ' ' + (1*16 + 15)*100h
|
||
@@:
|
||
push cx
|
||
mov cx, 76
|
||
rep stosw
|
||
pop cx
|
||
add di, 4*2
|
||
loop @b
|
||
pop es
|
||
pop ax
|
||
; switch on key
|
||
cmp al, 13
|
||
jz .continue
|
||
or al, 20h
|
||
cmp al, 'a'
|
||
jz .change_a
|
||
cmp al, 'b'
|
||
jz .change_b
|
||
cmp al, 'c'
|
||
jz .change_c
|
||
cmp al, 'd'
|
||
jnz .show_remarks
|
||
_setcursor 15,0
|
||
mov si, bdev
|
||
call print
|
||
mov bx, '14'
|
||
call getkey
|
||
mov [preboot_device], al
|
||
_setcursor 13,0
|
||
.d:
|
||
mov [.bSettingsChanged], 1
|
||
call clear_vmodes_table ;clear vmodes_table
|
||
jmp .printcfg
|
||
.change_a:
|
||
.loops:
|
||
call draw_vmodes_table
|
||
_setcursor 25,0 ; out of screen
|
||
xor ax,ax
|
||
int 0x16
|
||
; call clear_table_cursor ;clear current position of cursor
|
||
|
||
mov si,word [cursor_pos]
|
||
|
||
cmp ah,0x48;x,0x48E0 ; up
|
||
jne .down
|
||
cmp si,modes_table
|
||
jbe .loops
|
||
sub word [cursor_pos],size_of_step
|
||
jmp .loops
|
||
|
||
.down: cmp ah,0x50;x,0x50E0 ; down
|
||
jne .pgup
|
||
cmp word[es:si+10],-1
|
||
je .loops
|
||
add word [cursor_pos],size_of_step
|
||
jmp .loops
|
||
|
||
.pgup: cmp ah,0x49 ; page up
|
||
jne .pgdn
|
||
sub si, size_of_step*long_v_table
|
||
cmp si, modes_table
|
||
jae @f
|
||
mov si, modes_table
|
||
@@:
|
||
mov word [cursor_pos], si
|
||
mov si, word [home_cursor]
|
||
sub si, size_of_step*long_v_table
|
||
cmp si, modes_table
|
||
jae @f
|
||
mov si, modes_table
|
||
@@:
|
||
mov word [home_cursor], si
|
||
jmp .loops
|
||
|
||
.pgdn: cmp ah,0x51 ; page down
|
||
jne .enter
|
||
mov ax, [end_cursor]
|
||
add si, size_of_step*long_v_table
|
||
cmp si, ax
|
||
jb @f
|
||
mov si, ax
|
||
sub si, size_of_step
|
||
@@:
|
||
mov word [cursor_pos], si
|
||
mov si, word [home_cursor]
|
||
sub ax, size_of_step*long_v_table
|
||
add si, size_of_step*long_v_table
|
||
cmp si, ax
|
||
jb @f
|
||
mov si, ax
|
||
@@:
|
||
mov word [home_cursor], si
|
||
jmp .loops
|
||
|
||
.enter: cmp al,0x0D;x,0x1C0D ; enter
|
||
jne .loops
|
||
push word [cursor_pos]
|
||
pop bp
|
||
push word [es:bp]
|
||
pop word [x_save]
|
||
push word [es:bp+2]
|
||
pop word [y_save]
|
||
push word [es:bp+6]
|
||
pop word [number_vm]
|
||
mov word [preboot_graph],bp ;save choose
|
||
|
||
jmp .d
|
||
|
||
.change_b:
|
||
_setcursor 15,0
|
||
; mov si, ask_dma
|
||
; call print
|
||
; mov bx, '13'
|
||
; call getkey
|
||
; mov [preboot_dma], al
|
||
mov si, ask_bd
|
||
call print
|
||
mov bx, '12'
|
||
call getkey
|
||
mov [preboot_biosdisk], al
|
||
_setcursor 11,0
|
||
jmp .d
|
||
.change_c:
|
||
_setcursor 15,0
|
||
mov si, vrrmprint
|
||
call print
|
||
mov bx, '12'
|
||
call getkey
|
||
mov [preboot_vrrm], al
|
||
_setcursor 12,0
|
||
jmp .d
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
.say_on_off:
|
||
pushf
|
||
call print
|
||
mov si, on_msg
|
||
popf
|
||
jz @f
|
||
mov si, off_msg
|
||
@@: jmp printplain
|
||
; novesa and vervesa strings are not used at the moment of executing this code
|
||
virtual at novesa
|
||
.oldtimer dd ?
|
||
.starttime dd ?
|
||
.bSettingsChanged db ?
|
||
.timer dd ?
|
||
end virtual
|
||
.loader_block dd -1
|
||
.gettime:
|
||
mov ah, 0
|
||
int 1Ah
|
||
xchg ax, cx
|
||
shl eax, 10h
|
||
xchg ax, dx
|
||
ret
|
||
.newtimer:
|
||
push ds
|
||
push cs
|
||
pop ds
|
||
pushf
|
||
call [.oldtimer]
|
||
pushad
|
||
call .gettime
|
||
sub eax, [.starttime]
|
||
sub ax, 18*5
|
||
jae .timergo
|
||
neg ax
|
||
add ax, 18-1
|
||
mov bx, 18
|
||
xor dx, dx
|
||
div bx
|
||
if lang eq ru
|
||
; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 5 ᥪ㭤, 4/3/2 ᥪ㭤<EFBFBD>, 1 ᥪ㭤<EFBFBD>
|
||
cmp al, 5
|
||
mov cl, ' '
|
||
jae @f
|
||
cmp al, 1
|
||
mov cl, '<27>'
|
||
jz @f
|
||
mov cl, '<27>'
|
||
@@: mov [time_str+9], cl
|
||
else if lang eq et
|
||
cmp al, 1
|
||
ja @f
|
||
mov [time_str+9], ' '
|
||
mov [time_str+10],' '
|
||
@@:
|
||
else
|
||
; wait 5/4/3/2 seconds, 1 second
|
||
cmp al, 1
|
||
mov cl, 's'
|
||
ja @f
|
||
mov cl, ' '
|
||
@@: mov [time_str+9], cl
|
||
end if
|
||
add al, '0'
|
||
mov [time_str+1], al
|
||
mov si, time_msg
|
||
_setcursor 7,0
|
||
call print
|
||
_setcursor 25,0
|
||
popad
|
||
pop ds
|
||
iret
|
||
.timergo:
|
||
push 0
|
||
pop es
|
||
mov eax, [.oldtimer]
|
||
mov [es:8*4], eax
|
||
mov sp, 0EC00h
|
||
.continue:
|
||
sti
|
||
_setcursor 6,0
|
||
mov si, space_msg
|
||
call printplain
|
||
call printplain
|
||
_setcursor 6,0
|
||
mov si, loading_msg
|
||
call print
|
||
_setcursor 15,0
|
||
cmp [.bSettingsChanged], 0
|
||
jz .load
|
||
cmp [.loader_block], -1
|
||
jz .load
|
||
les bx, [.loader_block]
|
||
mov eax, [es:bx+3]
|
||
push ds
|
||
pop es
|
||
test eax, eax
|
||
jz .load
|
||
push eax
|
||
mov si, save_quest
|
||
call print
|
||
.waityn:
|
||
mov ah, 0
|
||
int 16h
|
||
or al, 20h
|
||
cmp al, 'n'
|
||
jz .loadc
|
||
cmp al, 'y'
|
||
jnz .waityn
|
||
call putchar
|
||
mov byte [space_msg+80], 186
|
||
pop eax
|
||
push cs
|
||
push .cont
|
||
push eax
|
||
retf
|
||
.loadc:
|
||
pop eax
|
||
.cont:
|
||
push cs
|
||
pop ds
|
||
mov si, space_msg
|
||
mov byte [si+80], 0
|
||
_setcursor 15,0
|
||
call printplain
|
||
_setcursor 15,0
|
||
.load:
|
||
; \end{diamond}[02.12.2005]
|
||
|
||
; ASK GRAPHICS MODE
|
||
|
||
call set_vmode
|
||
|
||
; GRAPHICS ACCELERATION
|
||
; force yes
|
||
mov [es:0x901C], byte 1
|
||
|
||
; DMA ACCESS TO HD
|
||
|
||
mov al, [preboot_dma]
|
||
mov [es:0x901F], al
|
||
|
||
; SET GRAPHICS
|
||
|
||
xor ax, ax
|
||
mov es, ax
|
||
|
||
mov ax, [es:0x9008] ; vga & 320x200
|
||
mov bx, ax
|
||
cmp ax, 0x13
|
||
je setgr
|
||
cmp ax, 0x12
|
||
je setgr
|
||
mov ax, 0x4f02 ; Vesa
|
||
setgr:
|
||
int 0x10
|
||
test ah, ah
|
||
mov si, fatalsel
|
||
jnz v_mode_error
|
||
; set mode 0x12 graphics registers:
|
||
cmp bx, 0x12
|
||
jne gmok2
|
||
|
||
mov al, 0x05
|
||
mov dx, 0x03ce
|
||
push dx
|
||
out dx, al ; select GDC mode register
|
||
mov al, 0x02
|
||
inc dx
|
||
out dx, al ; set write mode 2
|
||
|
||
mov al, 0x02
|
||
mov dx, 0x03c4
|
||
out dx, al ; select VGA sequencer map mask register
|
||
mov al, 0x0f
|
||
inc dx
|
||
out dx, al ; set mask for all planes 0-3
|
||
|
||
mov al, 0x08
|
||
pop dx
|
||
out dx, al ; select GDC bit mask register
|
||
; for writes to 0x03cf
|
||
gmok2:
|
||
push ds
|
||
pop es
|
||
|