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Added small screen to 512x384 video modes in the DOS port.

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stainless
2001-10-09 23:05:02 +00:00
parent be5e9d4f32
commit 187395f382
3 changed files with 83 additions and 2 deletions
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80
zsnes/src/video/copyvid.inc
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@@ -2257,6 +2257,8 @@ NEWSYM copyvesa2512x384x8b
jne .startcopy
ret
.startcopy
cmp byte[smallscreenon],1
je near .smallscreen
cmp byte[ForceNewGfxOff],0
jne .nong16b
cmp byte[newengen],0
@@ -2351,6 +2353,44 @@ NEWSYM copyvesa2512x384x8b
jnz .b2
jmp .returnloop
.smallscreen
push es
mov ax,[vesa2selec]
mov es,ax
mov esi,[vidbuffer]
mov edi,[VidStartDraw]
add esi,16+256+32
add edi,72*512+128
cmp byte[resolutn],224
jne .ssres239
add edi,8*512
.ssres239
xor eax,eax
mov dl,[resolutn]
dec dl
dec dl
cmp byte[MMXSupport],1
je .ssloopb
.ssloopa
mov ecx,64
rep movsd
add esi,32
add edi,128*2
dec dl
jnz .ssloopa
jmp .done
.ssloopb
mov ecx,16
MMXStuff
add esi,32
add edi,128*2
dec dl
jnz .ssloopb
emms
.done
pop es
ret
SECTION .bss
.scratio resb 1
.lastrep resb 1
@@ -5628,6 +5668,8 @@ NEWSYM copyvesa2512x384x16b
jne .startcopy
ret
.startcopy
cmp byte[smallscreenon],1
je near .smallscreen
push es
mov byte[.lastrep],0
mov ax,[vesa2selec]
@@ -5714,6 +5756,44 @@ NEWSYM copyvesa2512x384x16b
jnz .b2
jmp .returnloop
.smallscreen
push es
mov ax,[vesa2selec]
mov es,ax
mov esi,[vidbuffer]
mov edi,[VidStartDraw]
add esi,16*2+256*2+32*2
add edi,72*512*2+128*2
cmp byte[resolutn],224
jne .ssres239
add edi,8*512*2
.ssres239
xor eax,eax
mov dl,[resolutn]
dec dl
dec dl
cmp byte[MMXSupport],1
je .ssloopb
.ssloopa
mov ecx,64*2
rep movsd
add esi,32*2
add edi,128*2*2
dec dl
jnz .ssloopa
jmp .done
.ssloopb
mov ecx,16*2
MMXStuff
add esi,32*2
add edi,128*2*2
dec dl
jnz .ssloopb
emms
.done
pop es
ret
SECTION .bss
.scratio resb 1
.lastrep resb 1