233 lines
4.8 KiB
NASM
233 lines
4.8 KiB
NASM
;
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; COMMUNICATING WITH MODEM: PORTS & IRQ
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;
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; Compile with FASM
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;
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include "lang.inc"
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include "..\..\..\..\macros.inc"
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use32
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org 0x0
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db 'MENUET01' ; 8 byte id
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dd 0x01 ; header version
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dd START ; start of code
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dd I_END ; size of image
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dd 0x1000 ; memory for app
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dd 0x1000 ; esp
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dd 0x0 , 0x0 ; I_Param , I_Icon
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START: ; start of execution
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mov eax,45 ; reserve irq 4
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mov ebx,0
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mov ecx,4
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mcall
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mov eax,46 ; reserve ports 0x3f8-0x3ff
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mov ebx,0
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mov ecx,0x3f8
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mov edx,0x3ff
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mcall
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mov eax,44 ; read these ports at interrupt/irq 4
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mov ebx,irqtable
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mov ecx,4
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mcall
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mov eax,40 ; enable event for interrupt/irq 4
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mov ebx,10000b shl 16 + 111b
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mcall
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call program_com1
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mov eax, 48
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mov ebx, 3
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mov ecx, sc
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mov edx, sizeof.system_colors
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mcall
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red:
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call draw_window
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still:
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mov eax,10 ; wait here for event
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mcall
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cmp eax,1 ; redraw request ?
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je red
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cmp eax,2 ; key in buffer ?
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je key
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cmp eax,3 ; button in buffer ?
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je button
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cmp eax,16+4 ; data read by interrupt ?
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je irq4
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jmp still
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key: ; key
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mov eax,2 ; just read it and ignore
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mcall
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mov al,ah
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mov dx,0x3f8
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out dx,al
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jmp still
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button: ; button
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or eax,-1 ; close this program
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mcall
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irq4:
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mov eax,42
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mov ebx,4
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mcall
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; eax = number of bytes left
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; ecx = 0 success, =1 fail
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; bl = byte
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inc [pos]
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and [pos],31
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mov eax,[pos]
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mov [string+eax], bl
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call draw_string
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jmp still
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baudrate_9600 equ 12
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baudrate_57600 equ 2
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program_com1:
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mov dx,0x3f8+3
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mov al,0x80
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out dx,al
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mov dx,0x3f8+1
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mov al,0x00
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out dx,al
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mov dx,0x3f8+0
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mov al,baudrate_9600
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out dx,al
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mov dx,0x3f8+3
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mov al,0x3
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out dx,al
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mov dx,0x3f8+4
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mov al,0xb
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out dx,al
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mov dx,0x3f8+1
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mov al,0x1
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out dx,al
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ret
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; *********************************************
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; ******* WINDOW DEFINITIONS AND DRAW ********
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; *********************************************
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draw_window:
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mov eax, 12 ; function 12:tell os about windowdraw
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mov ebx, 1 ; 1, start of draw
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mcall
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; DRAW WINDOW
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mov eax, 0 ; function 0 : define and draw window
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mov ebx, 100*65536+250 ; [x start] *65536 + [x size]
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mov ecx, 100*65536+85 ; [y start] *65536 + [y size]
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mov edx, [sc.work]
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or edx, 0x03000000 ; color of work area RRGGBB,8->color gl
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mcall
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; WINDOW LABEL
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mov eax, 4 ; function 4 : write text to window
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mov ebx, 8*65536+8 ; [x start] *65536 + [y start]
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mov ecx, [sc.grab_text]
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or ecx, 0x10000000 ; font 1 & color ( 0xF0RRGGBB )
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mov edx, title ; pointer to text beginning
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mov esi, title.len ; text length
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mcall
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mov eax, 4 ; draw text
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mov ebx, 20*65536+33
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mov ecx, [sc.work_text]
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mov edx, text+4
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.nextstr:
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mov esi, [edx-4]
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test esi, 0xFF000000
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jnz .finstr
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mcall
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add edx, esi
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add edx, 4
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add ebx, 10
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jmp .nextstr
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.finstr:
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call draw_string
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mov eax,12 ; function 12:tell os about windowdraw
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mov ebx,2 ; 2, end of draw
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mcall
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ret
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draw_string:
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mov eax, 4
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mov ebx, 20*65536+65
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mov ecx, [sc.work_text]
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mov edx, string
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mov esi, 32
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mcall
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ret
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; DATA AREA
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if lang eq ru_RU
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text mstr "‚‚Ž„ˆŒ›… ‘ˆŒ‚Ž‹› <20>…<EFBFBD>…„€ž’‘Ÿ ŒŽ„…Œ“.",\
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"„€<EFBFBD><EFBFBD>›… Ž’ ŒŽ„…Œ€ ‘—ˆ’›‚€ž’‘Ÿ <EFBFBD>Ž",\
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"<EFBFBD><EFBFBD>…<EFBFBD>›‚€<EFBFBD>ˆž IRQ4 ˆ Ž’Ž<EFBFBD><EFBFBD>€†€ž’‘Ÿ <EFBFBD>ˆ†…."
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title:
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db 'ŒŽ„…Œ <20>€ COM1'
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.len = $ - title
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else
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text mstr "TYPED CHARACTERS ARE SENT TO MODEM.",\
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"DATA FROM MODEM IS READ BY IRQ4",\
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"INTERRUPT AND DISPLAYED BELOW."
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title:
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db 'MODEM AT COM1'
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.len = $ - title
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end if
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pos dd 0x0
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irqtable:
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; port ; 1=byte, 2=word
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dd 0x3f8 +0x01000000 ; read byte from port 0x3f8 at interrupt/irq 4
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dd 0x0 ; no more ports ( max 15 ) to read
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I_END:
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string rb 32
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sc system_colors
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