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Added 640x400 video mode variants to the DOS port.

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stainless
2001-10-09 21:46:56 +00:00
parent 7d148b4a73
commit be5e9d4f32
6 changed files with 296 additions and 33 deletions
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67
zsnes/src/dos/initvid.asm
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@@ -82,8 +82,12 @@ NEWSYM dosinitvideo
cmp byte[cvidmode],12
je near .initvesa2512x384x16
cmp byte[cvidmode],13
je near .initvesa2640x480x8
je near .initvesa2640x400x8
cmp byte[cvidmode],14
je near .initvesa2640x400x16
cmp byte[cvidmode],15
je near .initvesa2640x480x8
cmp byte[cvidmode],16
je near .initvesa2640x480x16
ret
@@ -411,6 +415,63 @@ NEWSYM dosinitvideo
pop es
ret
;*******************************************************
; InitVESA2 640x400x8 Set up Linear 640x400x8b
;*******************************************************
.initvesa2640x400x8
mov byte[res640],2
mov word[vesa2_x],640
mov word[vesa2_y],400
mov byte[vesa2_bits],8
call InitVesa2
cmp byte[videotroub],1
jne .notrouble9
ret
.notrouble9
call makepal
; clear screen (640*400 bytes)
push es
mov ax,[vesa2selec]
mov es,ax
mov edi,0
mov ecx,640*400
.loopg
mov byte[es:edi],0
inc edi
dec ecx
jnz .loopg
pop es
ret
;*******************************************************
; InitVESA2 640x400x16 Set up Linear 640x400x16b
;*******************************************************
.initvesa2640x400x16
mov byte[res640],2
mov byte[cbitmode],1
mov word[vesa2_x],640
mov word[vesa2_y],400
mov byte[vesa2_bits],16
call InitVesa2
cmp byte[videotroub],1
jne .notrouble10
ret
.notrouble10
; clear screen (640*400*2 bytes)
push es
mov ax,[vesa2selec]
mov es,ax
mov edi,0
mov ecx,640*400*2
.looph
mov byte[es:edi],0
inc edi
dec ecx
jnz .looph
pop es
ret
;*******************************************************
; InitVESA1.2 640x480x16 Set up 640x480x16b
@@ -435,11 +496,11 @@ NEWSYM dosinitvideo
xor edi,edi
mov ecx,16384
.loopg
.loopi
mov byte[es:edi],0
inc edi
dec ecx
jnz .loopg
jnz .loopi
dec ebx
jnz .loopbanks