Cleaned up the VGA video mode source code.

2001-09-08 21:50:42 +00:00
parent 24d81b18cc
commit 0d1e02c9bb
4 changed files with 154 additions and 531 deletions
--- a/zsnes/src/dos/vga.inc
+++ b/zsnes/src/dos/vga.inc
@@ -0,0 +1,110 @@
+
+%ifdef __MSDOS__
+%macro SetVGAMode 1
+    mov byte[cbitmode],0
+
+    mov ax,0013h
+    int 10h
+
+    mov dx,03d4h
+    mov ax,0011h
+    out dx,ax
+    inc edx
+    in al,dx
+    and al,07fh
+    mov ah,al
+    mov al,11h
+    dec edx
+    out dx,ax
+
+    xor ecx,ecx
+    jmp %%start
+
+%%loop
+    add ecx,4
+
+%%start
+    mov eax,[%1+ecx]
+    or eax,eax
+    jz %%end
+
+    cmp ax,03c0h
+    je %%3c0
+    cmp ax,03c2h
+    je %%3c2
+    cmp ax,03c3h
+    je %%3c2
+    jmp %%default
+
+%%3c0
+    mov dx,03dah
+    in al,dx
+    mov dl,0c0h
+    shr eax,16
+    or al,20h
+    out dx,al
+    shr eax,8
+    out dx,al
+    jmp %%loop
+
+%%3c2
+    mov dx,ax
+    rol eax,8
+    out dx,al
+    jmp %%loop
+
+%%default
+    mov dx,ax
+    shr eax,16
+    out dx,ax
+    jmp %%loop
+
+%%end
+%endmacro
+
+
+SECTION .data
+
+.Mode256x224c
+    dw 03c2h,0e300h,03d4h,05f00h,03d4h,03f01h,03d4h,04002h,03d4h,08203h
+    dw 03d4h,04a04h,03d4h,09a05h,03d4h,00b06h,03d4h,03e07h,03d4h,00008h
+    dw 03d4h,06109h,03d4h,0da10h,03d4h,0ac11h,03d4h,0bf12h,03d4h,02013h
+    dw 03d4h,04014h,03d4h,00715h,03d4h,01a16h,03d4h,0a317h,03c4h,00101h
+    dw 03c4h,00e04h,03cEh,04005h,03ceh,00506h,03c0h,04110h,03c0h,00013h 
+    dd 0
+
+.Mode256x240c
+    dw 03c2h,0e300h,03d4h,05f00h,03d4h,03f01h,03d4h,04002h,03d4h,08203h
+    dw 03d4h,04a04h,03d4h,09a05h,03d4h,00d06h,03d4h,03e07h,03d4h,00008h
+    dw 03d4h,04109h,03d4h,0ea10h,03d4h,0ac11h,03d4h,0df12h,03d4h,02013h
+    dw 03d4h,04014h,03d4h,0e715h,03d4h,00616h,03d4h,0a317h,03c4h,00101h
+    dw 03c4h,00e04h,03ceh,04005h,03ceh,00506h,03c0h,04110h,03c0h,00013h
+    dd 0
+
+.Mode256x256c
+    dw 03c2h,0e300h,03d4h,05f00h,03d4h,03f01h,03d4h,04002h,03d4h,08203h
+    dw 03d4h,04a04h,03d4h,09a05h,03d4h,02306h,03d4h,0b207h,03d4h,00008h
+    dw 03d4h,06109h,03d4h,00a10h,03d4h,0ac11h,03d4h,0FF12h,03d4h,02013h
+    dw 03d4h,04014h,03d4h,00715h,03d4h,01a16h,03d4h,0a317h,03c4h,00101h
+    dw 03c4h,00e04h,03ceh,04005h,03ceh,00506h,03c0h,04110h,03c0h,00013h 
+    dd 0
+
+.Mode256x256cs
+    dw 03c2h,0e300h,03d4h,05f00h,03d4h,03f01h,03d4h,04002h,03d4h,08203h
+    dw 03d4h,04a04h,03d4h,09a05h,03d4h,02306h,03d4h,01d07h,03d4h,00008h
+    dw 03d4h,06009h,03d4h,00a10h,03d4h,0ac11h,03d4h,0ff12h,03d4h,02013h
+    dw 03d4h,04014h,03d4h,00715h,03d4h,01a16h,03d4h,0a317h,03c4h,00101h
+    dw 03c4h,00e04h,03ceh,04005h,03cEh,00506h,03c0h,04110h,03c0h,00013h 
+    dd 0
+
+.Mode320x240
+    dw 03c2h,0e300h,03d4h,05f00h,03d4h,04f01h,03d4h,05002h,03d4h,08203h
+    dw 03d4h,05404h,03d4h,08005h,03d4h,00d06h,03d4h,03e07h,03d4h,00008h
+    dw 03d4h,04109h,03d4h,0ea10h,03d4h,0ac11h,03d4h,0df12h,03d4h,02813h
+    dw 03d4h,00014h,03d4h,0e715h,03d4h,00616h,03d4h,0e317h,03c4h,00101h
+    dw 03c4h,00604h,03ceh,04005h,03ceh,00506h,03c0h,04110h,03c0h,00013h 
+    dd 0
+
+
+SECTION .text
+%endif