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PPU: Block 2118/2119 writes when outside vblank/fblank

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This commit is contained in:
Sour 2019-03-15 21:09:39 -04:00
parent b90b273e4b
commit c7ecf754da
1 changed files with 10 additions and 0 deletions
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10
Core/Ppu.cpp
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@ -1439,6 +1439,11 @@ void Ppu::Write(uint32_t addr, uint8_t value)
case 0x2118: case 0x2118:
//VMDATAL - VRAM Data Write low byte //VMDATAL - VRAM Data Write low byte
if(!_forcedVblank && _scanline < (_overscanMode ? 240 : 225)) {
//Invalid VRAM access - can't write VRAM outside vblank/force blank
return;
}
_console->ProcessPpuWrite(GetVramAddress() << 1, value, SnesMemoryType::VideoRam); _console->ProcessPpuWrite(GetVramAddress() << 1, value, SnesMemoryType::VideoRam);
_vram[GetVramAddress() << 1] = value; _vram[GetVramAddress() << 1] = value;
@ -1449,6 +1454,11 @@ void Ppu::Write(uint32_t addr, uint8_t value)
case 0x2119: case 0x2119:
//VMDATAH - VRAM Data Write high byte //VMDATAH - VRAM Data Write high byte
if(!_forcedVblank && _scanline < (_overscanMode ? 240 : 225)) {
//Invalid VRAM access - can't write VRAM outside vblank/force blank
return;
}
_console->ProcessPpuWrite((GetVramAddress() << 1) + 1, value, SnesMemoryType::VideoRam); _console->ProcessPpuWrite((GetVramAddress() << 1) + 1, value, SnesMemoryType::VideoRam);
_vram[(GetVramAddress() << 1) + 1] = value; _vram[(GetVramAddress() << 1) + 1] = value;