0,0 → 1,235 |
; |
; COMMUNICATING WITH MODEM: PORTS & IRQ |
; |
; Compile with FASM for Menuet |
; |
|
include "lang.inc" |
include "macros.inc" |
|
use32 |
org 0x0 |
|
db 'MENUET01' ; 8 byte id |
dd 0x01 ; header version |
dd START ; start of code |
dd I_END ; size of image |
dd 0x1000 ; memory for app |
dd 0x1000 ; esp |
dd 0x0 , 0x0 ; I_Param , I_Icon |
|
|
START: ; start of execution |
|
|
mov eax,45 ; reserve irq 4 |
mov ebx,0 |
mov ecx,4 |
int 0x40 |
|
mov eax,46 ; reserve ports 0x3f8-0x3ff |
mov ebx,0 |
mov ecx,0x3f8 |
mov edx,0x3ff |
int 0x40 |
|
mov eax,44 ; read these ports at interrupt/irq 4 |
mov ebx,irqtable |
mov ecx,4 |
int 0x40 |
|
mov eax,40 ; enable event for interrupt/irq 4 |
mov ebx,10000b shl 16 + 111b |
int 0x40 |
|
call program_com1 |
|
call draw_window |
|
still: |
|
mov eax,10 ; wait here for event |
int 0x40 |
|
cmp eax,1 ; redraw request ? |
je red |
cmp eax,2 ; key in buffer ? |
je key |
cmp eax,3 ; button in buffer ? |
je button |
cmp eax,16+4 ; data read by interrupt ? |
je irq4 |
|
jmp still |
|
red: ; redraw |
call draw_window |
jmp still |
|
key: ; key |
mov eax,2 ; just read it and ignore |
int 0x40 |
|
mov al,ah |
mov dx,0x3f8 |
out dx,al |
|
jmp still |
|
button: ; button |
or eax,-1 ; close this program |
int 0x40 |
|
|
irq4: |
|
mov eax,42 |
mov ebx,4 |
int 0x40 |
|
; eax = number of bytes left |
; ecx = 0 success, =1 fail |
; bl = byte |
|
inc [pos] |
and [pos],31 |
mov eax,[pos] |
|
mov [string+eax], bl |
call draw_string |
|
jmp still |
|
|
baudrate_9600 equ 12 |
baudrate_57600 equ 2 |
|
program_com1: |
|
mov dx,0x3f8+3 |
mov al,0x80 |
out dx,al |
|
mov dx,0x3f8+1 |
mov al,0x00 |
out dx,al |
|
mov dx,0x3f8+0 |
mov al,baudrate_9600 |
out dx,al |
|
mov dx,0x3f8+3 |
mov al,0x3 |
out dx,al |
|
mov dx,0x3f8+4 |
mov al,0xb |
out dx,al |
|
mov dx,0x3f8+1 |
mov al,0x1 |
out dx,al |
|
ret |
|
|
|
; ********************************************* |
; ******* WINDOW DEFINITIONS AND DRAW ******** |
; ********************************************* |
|
|
draw_window: |
|
mov eax, 48 |
mov ebx, 3 |
mov ecx, sc |
mov edx, sizeof.system_colors |
int 0x40 |
|
mov eax, 12 ; function 12:tell os about windowdraw |
mov ebx, 1 ; 1, start of draw |
int 0x40 |
|
; DRAW WINDOW |
mov eax, 0 ; function 0 : define and draw window |
mov ebx, 100*65536+250 ; [x start] *65536 + [x size] |
mov ecx, 100*65536+85 ; [y start] *65536 + [y size] |
mov edx, [sc.work] |
or edx, 0x03000000 ; color of work area RRGGBB,8->color gl |
int 0x40 |
|
; WINDOW LABEL |
mov eax, 4 ; function 4 : write text to window |
mov ebx, 8*65536+8 ; [x start] *65536 + [y start] |
mov ecx, [sc.grab_text] |
or ecx, 0x10000000 ; font 1 & color ( 0xF0RRGGBB ) |
mov edx, header ; pointer to text beginning |
mov esi, header.len ; text length |
int 0x40 |
|
mov eax, 4 ; draw text |
mov ebx, 20*65536+33 |
mov ecx, [sc.work_text] |
mov edx, text+4 |
.nextstr: |
mov esi, [edx-4] |
test esi, 0xFF000000 |
jnz .finstr |
int 0x40 |
add edx, esi |
add edx, 4 |
add ebx, 10 |
jmp .nextstr |
.finstr: |
|
call draw_string |
|
mov eax,12 ; function 12:tell os about windowdraw |
mov ebx,2 ; 2, end of draw |
int 0x40 |
|
ret |
|
|
draw_string: |
mov eax, 4 |
mov ebx, 20*65536+65 |
mov ecx, [sc.work_text] |
mov edx, string |
mov esi, 32 |
int 0x40 |
ret |
|
|
; DATA AREA |
|
|
if lang eq ru |
text mstr "
.",\ |
"
",\ |
"
IRQ4
." |
header: |
db '
COM1' |
.len = $ - header |
else |
text mstr "TYPED CHARACTERS ARE SENT TO MODEM.",\ |
"DATA FROM MODEM IS READ BY IRQ4",\ |
"INTERRUPT AND DISPLAYED BELOW." |
header: |
db 'MODEM AT COM1' |
.len = $ - header |
end if |
|
pos dd 0x0 |
|
irqtable: |
; port ; 1=byte, 2=word |
dd 0x3f8 +0x01000000 ; read byte from port 0x3f8 at interrupt/irq 4 |
dd 0x0 ; no more ports ( max 15 ) to read |
|
|
I_END: |
|
string rb 32 |
sc system_colors |