much more stuff
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4f85bd4b1b
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77c162002b
90
main.c
90
main.c
@ -1,15 +1,33 @@
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#include <stdio.h>
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#include <i86.h>
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#include <conio.h>
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#include <dos.h>
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extern void __cdecl enableUnchainedVGAMode();
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extern void __cdecl enableTextMode();
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extern void __cdecl fillScreen(int);
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extern void __cdecl latchCopyCube(char offset, int writtenValue, int writeMode);
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extern void __cdecl latchCopyCube(
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char offset,
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int writtenValue,
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int writeMode,
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int setResetRegister,
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int enableSetResetRegister
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);
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extern void __cdecl writeCube(
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char offset,
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int writeMode,
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int setResetRegister,
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int enableSetResetRegister
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);
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extern void __cdecl drawColorCube(
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char offset,
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int color
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);
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extern int __cdecl paramTest(int wow);
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extern void __cdecl far interrupt keyboardHandler();
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extern void far interrupt keyboardHandler();
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extern char keyboardPressed;
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extern char lastScancode;
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char far *VGA = (char*)0xA0000;
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@ -44,52 +62,42 @@ int main(void) {
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int9Save = _dos_getvect(9);
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_dos_setvect(9, keyboardHandler);
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printf("%p\n", keyboardHandler);
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while (keyboardPressed == 0) {
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printf("%d\n", keyboardPressed);
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}
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printf("wow\n");
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delay(200);
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_dos_setvect(9, int9Save);
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return 0;
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enableUnchainedVGAMode();
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outp(0x3c8, 255);
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outp(0x3c9, 63);
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outp(0x3c9, 63);
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outp(0x3c9, 63);
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fillScreen(0);
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populateExampleCube();
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latchCopyCube(8, 0, 0x00);
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latchCopyCube(12, 127, 0x00);
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latchCopyCube(16, 0, 0x08);
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latchCopyCube(20, 127, 0x08);
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latchCopyCube(24, 0, 0x10);
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latchCopyCube(28, 127, 0x10);
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latchCopyCube(32, 0, 0x18);
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latchCopyCube(36, 127, 0x18);
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while (keyboardPressed == 0) {
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delay(1);
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}
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/*
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outp(0x3c4, 0x02);
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for (i = 0; i < 200; ++i) {
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for (j = 0; j < 4; ++j) {
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outp(0x3c5, 1 << j);
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VGA[i] = j + 1;
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}
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}
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populateExampleCube();
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latchCopyCube(8, 0, 0x00, 0, 0);
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latchCopyCube(12, 127, 0x00, 0, 0);
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latchCopyCube(16, 0, 0x08, 0, 0);
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latchCopyCube(20, 127, 0x08, 0, 0);
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latchCopyCube(24, 0, 0x10, 0, 0);
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latchCopyCube(28, 127, 0x10, 0, 0);
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latchCopyCube(32, 0, 0x18, 0, 0);
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latchCopyCube(36, 127, 0x18, 0, 0);
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latchCopyCube(40, 0, 0x18 + 0x04, 0, 0);
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latchCopyCube(44, 127, 0x18 + 0x04, 0, 0);
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latchCopyCube(64, 0, 0x10, 7, 7);
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latchCopyCube(68, 0, 0x10, 7, 0);
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latchCopyCube(72, 0, 0x10, 0, 7);
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*/
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//delay(3000);
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writeCube(0, 0x10, 0, 0);
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writeCube(4, 0x10, 7, 0);
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writeCube(8, 0x10, 7, 7);
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writeCube(12, 0x10, 0, 7);
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while (keyboardPressed == 0);
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_dos_setvect(9, int9Save);
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enableTextMode();
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return 0;
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}
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179
vga.asm
179
vga.asm
@ -2,9 +2,11 @@ PUBLIC _enableUnchainedVGAMode
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PUBLIC _enableTextMode
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PUBLIC _fillScreen
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PUBLIC _latchCopyCube
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PUBLIC _drawColorCube
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PUBLIC _writeCube
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PUBLIC _paramTest
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PUBLIC _keyboardPressed
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PUBLIC _keyboardHandler
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PUBLIC keyboardHandler_
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DISPLAY_MODE_VGA equ 13h
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DISPLAY_MODE_TEXT equ 03h
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@ -28,11 +30,11 @@ VGA_CRT_CONTROLLER_MODE_CONTROL equ 0x17
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.DATA
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_keyboardPressed dd 0
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_keyboardPressed db 0
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.CODE
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_keyboardHandler:
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keyboardHandler_:
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cli
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push eax
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push ebx
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@ -124,10 +126,162 @@ _paramTest:
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pop ebp
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ret
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_latchCopyCube:
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_drawColorCube:
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push ebp
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mov ebp, esp
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sub esp, 4 ; y
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push ebx
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push ecx
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push edx
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; write to all planes
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mov dx, VGA_SEQUENCE_CONTROLLER_INDEX
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mov al, VGA_SEQUENCE_CONTROLLER_MAP_MASK_MODE
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mov ah, 0xf
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out dx, ax
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; write out host data only
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mov dx, VGA_GRAPHICS_MODE_INDEX
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mov al, 0x03
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mov ah, 0x00
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out dx, ax
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; disable set/reset registers
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mov al, 0x00
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mov ah, 0x00
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out dx, ax
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mov al, 0x01
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mov ah, 0x00
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out dx, ax
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mov DWORD PTR [ebp-4], 16 ; y
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mov cx,[ebp-4]
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; offset is [ebp+8]
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mov bh,[ebp+12]; color
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_drawColorCube_yLoop:
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mov [ebp-4],cx
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mov eax,[ebp-4]
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dec eax
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mov bl,80
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mul bl
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add eax,[ebp+8]
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add eax,0xa0000
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mov cx, 4
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_drawColorCube_xLoop:
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mov [eax],bh ; write color
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inc eax
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loop _drawColorCube_xLoop
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mov cx, [ebp-4]
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loop _drawColorCube_yLoop
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pop edx
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pop ecx
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pop ebx
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mov esp, ebp
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pop ebp
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ret
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_writeCube:
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push ebp
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mov ebp,esp
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; we need a y variable
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sub esp,4
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; and a current color
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sub esp,4
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; [ebp+8] is x offset
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; [ebp+12] is data rotate
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; [ebp+16] is set/reset
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; [ebp+20] is enable set/reset
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; enable Logical Operation and host data shifts
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mov dx, VGA_GRAPHICS_MODE_INDEX
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mov al, 0x03
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mov ah, [ebp+12]
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out dx, ax
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; enable set/reset registers
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mov dx, VGA_GRAPHICS_MODE_INDEX
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mov al, 0x00
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mov ah, [ebp+16]
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out dx, ax
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mov dx, VGA_GRAPHICS_MODE_INDEX
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mov al, 0x01
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mov ah, [ebp+20]
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out dx, ax
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mov DWORD PTR [ebp-8],0
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mov DWORD PTR [ebp-4],16
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mov cx,[ebp-4]
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_writeCube_yLoop:
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mov [ebp-4],cx
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mov eax,[ebp-4]
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dec eax
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mov bl,80
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mul bl
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add eax,0xa0000
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mov cx,16
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_writeCube_xLoop:
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; get the current plane
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push ecx
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dec cl
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and cl,0x03
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jne _writeCube_dontAdvanceVGA
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inc eax
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_writeCube_dontAdvanceVGA:
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mov bl,1
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sal bl,cl
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pop ecx
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push eax
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; write to one plane
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mov dx, VGA_SEQUENCE_CONTROLLER_INDEX
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mov al, VGA_SEQUENCE_CONTROLLER_MAP_MASK_MODE
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mov ah, bl
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out dx, ax
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pop eax
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;mov ebx,[ebp+8]
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push ecx
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mov ecx,[ebp+8]
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mov bl,[ebp-8]
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mov BYTE PTR [eax+ecx],bl
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inc bl
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mov [ebp-8],bl
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pop ecx
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loop _writeCube_xLoop
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mov cx,[ebp-4]
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loop _writeCube_yLoop
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mov esp,ebp
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pop ebp
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ret
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_latchCopyCube:
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push ebp
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mov ebp, esp
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; we need a y variable
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sub esp,4 ; y
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push edx
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@ -140,19 +294,32 @@ _latchCopyCube:
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; [ebp+8] is x offset
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; [ebp+12] is written value
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; [ebp+16] is data rotate register
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; [ebp+20] is set/reset register
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; [ebp+24] is enable set/reset register
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; enable latch reads on all planes
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; write to all planes
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mov dx, VGA_SEQUENCE_CONTROLLER_INDEX
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mov al, VGA_SEQUENCE_CONTROLLER_MAP_MASK_MODE
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mov ah, 0xf
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out dx, ax
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; enable OR writes
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; enable Logical Operation and host data shifts
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mov dx, VGA_GRAPHICS_MODE_INDEX
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mov al, 0x03
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mov ah, [ebp+16]
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out dx, ax
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; enable set/reset registers
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mov dx, VGA_GRAPHICS_MODE_INDEX
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mov al, 0x00
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mov ah, [ebp+20]
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out dx, ax
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mov dx, VGA_GRAPHICS_MODE_INDEX
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mov al, 0x01
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mov ah, [ebp+24]
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out dx, ax
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mov dh, [ebp+12]
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mov DWORD PTR [ebp-4],16 ; y
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