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Interleaved rom detection fix

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pagefault
2003-04-02 18:20:22 +00:00
parent e8f1106f23
commit 34a2f529df
1 changed files with 20 additions and 19 deletions
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39
zsnes/src/init.asm
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@@ -6180,12 +6180,12 @@ NEWSYM CheckROMType
mov byte[intldone],0
cmp byte[romtype],1
je near .hirominterlcheck
jne near .nointerlcheck
xor ebx,ebx
xor edx,edx
mov eax,[curromsize]
imul eax,1048576
shr eax,3
shr eax,4
imul eax,[curromsize]
shr eax,2
mov esi,[romdata]
add esi,7FC0h
add esi,eax
@@ -6193,22 +6193,22 @@ NEWSYM CheckROMType
mov ebx,[esi]
inc esi
mov edx,[esi]
shl edx,8
shl edx,16
add ebx,edx
inc esi
add ebx,[esi]
inc esi
mov edx,[esi]
shl edx,8
shl edx,16
add ebx,edx
cmp ebx,0FFFFh
jne near .nointerlcheck
cmp bx,0FFFFh
jne .interlcheck2
mov esi,[romdata]
add esi,7FC0h
add esi,eax
add esi,25
cmp byte[esi],14
jb near .nointerlcheck
jae .interlcheck2
mov esi,[romdata]
add esi,7FC0h
add esi,eax
@@ -6223,32 +6223,33 @@ NEWSYM CheckROMType
je near .interleaved
cmp byte[esi],83
je near .interleaved
jmp .nointerlcheck
.hirominterlcheck
.interlcheck2
xor ebx,ebx
xor edx,edx
mov esi,[romdata]
add esi,0FFC0h
add esi,7FC0h
add esi,28
mov ebx,[esi]
inc esi
mov edx,[esi]
shl edx,8
shl edx,16
add ebx,edx
inc esi
add ebx,[esi]
inc esi
mov edx,[esi]
shl edx,8
shl edx,16
add ebx,edx
cmp ebx,0FFFFh
cmp bx,0FFFFh
jne near .nointerlcheck
mov esi,[romdata]
add esi,0FFC0h
add esi,eax
add esi,7FC0h
add esi,25
cmp byte[esi],14
jb .nointerlcheck
jae .nointerlcheck
mov esi,[romdata]
add esi,0FFC0h
add esi,7FC0h
add esi,eax
add esi,21
cmp byte[esi],33