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fix mmc5 in newppu (uchuu keibitai SDF title screen)

This commit is contained in:
zeromus 2014-08-04 03:07:40 +00:00
parent d2af8bba82
commit 9f0c58371a
1 changed files with 5 additions and 1 deletions
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6
trunk/src/boards/mmc5.cpp
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@ -138,7 +138,11 @@ static void mmc5_PPUWrite(uint32 A, uint8 V) {
uint8 FASTCALL mmc5_PPURead(uint32 A) { uint8 FASTCALL mmc5_PPURead(uint32 A) {
if (A < 0x2000) { if (A < 0x2000) {
if (ppuphase == PPUPHASE_BG) if (ppuphase == PPUPHASE_BG
//zero 03-aug-2014 - added this to fix Uchuu Keibitai SDF. The game reads NT entries from CHR rom while PPU is disabled.
//obviously we have enormous numbers of bugs springing from our terrible emulation of ppu-disabled states, but this does the job for fixing this one
&& (PPU[1] & 0x10)
)
return *MMC5BGVRAMADR(A); return *MMC5BGVRAMADR(A);
else return MMC5SPRVPage[(A) >> 10][(A)]; else return MMC5SPRVPage[(A) >> 10][(A)];
} else { } else {