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The latches are potentially set based on the read VRAM address. But, a modified latch should only affect subsequent reads. Your emulator appears to modify the latches based on the address and then it applies the modified latches to the current VRAM read.Zepper wrote:Uh... what? I didn't get it.
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(...)
case 0x2007:
tempaddr = ppu->refresh & 0x3FFF;
if( ppu_is_rendering() ) {
_clock_y();
_clock_x();
} else {
ppu->refresh = (ppu->refresh + ppu->inc) & 0x7FFF;
}
if(tempaddr >= 0x3F00)
{
ppu->ReadLatch2007 = _ppubank_name_read((tempaddr>>10)&3,tempaddr&0x3FF);
return (*(ram_color+(tempaddr & 0x1F)) & ppu->set_bw_mode) | (ppu->Latch & 0xC0);
}
else
{
ppu->Latch = ppu->ReadLatch2007;
if(tempaddr < 0x2000) {
ppu->ReadLatch2007 = read_ppu(tempaddr>>10,tempaddr&0x3FF);
} else {
ppu->ReadLatch2007 = _ppubank_name_read((tempaddr>>10)&3,tempaddr&0x3FF);
}
}
} return ppu->Latch;Because of my way of coding.tepples wrote:For MMC2/MMC4, read_ppu() should first read the current bank and then examine the address for trigger addresses ($0FD8-$0FDF, $0FE8-$0FEF, $1FD8-$1FDF, or $1FE8-$1FEF).
Why are read_ppu() and _ppubank_name_read() separate functions? Sunsoft Mapper 4 (#68, After Burner) and Konami VRC6 (#24 and #26, Akumajou Densetsu aka CV3J) can map CHR ROM into nametables ($2000-$2FFF), and Namco 163 (#19) and the Magic Floor mapper (#218) can map the nametable RAM in the Control Deck into pattern table space ($0000-$1FFF).
All those games you mentioned are supported & playable. So, the bug report relies in the mapper code, not the PPU code directly.
I'm not sure what you are asking for exactly. Unfortunately, I'm not able to capture a video of the issue, but there appears to be an issue with the mapper.Zepper wrote:@zeroone
I didn't notice any shaking with Klax.
Mind you to share your PPU $2007 reads source?
The method of latching/bankswitching seems to be different. PunchOut is much sensible if I do a certain change in the code; Fire Emblem no.
Actually, the info I had is from mapper 113.Double Strike's PCB does not support switchable mirroring: http://bootgod.dyndns.org:7777/profile.php?id=1044zeroone wrote:Just like mapper 113, I found that 0 = Horz and 1 = Vert.
If you don't want to have to distribute those libraries you'll need to compile it with: -static-libgcc -static-libstdc++
I think he means it's hard to tell what he was paused on in game. In other words, had Mario just landed right next to a Koopa, or is he safe?Zepper wrote:The program title bar brings such state info.- often when I pause with Esc and switch to other windows, the NES image ends up disappearing (just becomes black), so it's hard to tell what I was paused on
Any other OS than Windows XP for such "special" version?cpow wrote:If you don't want to have to distribute those libraries you'll need to compile it with: -static-libgcc -static-libstdc++
