I'm stil in doubt on $2006/$2007 PPU access. Should read/write be blocked if the screen is rendering? By "rendering", does it mean "sprites OR background enabled", or even that and "scanline between 21~260th"?
You know, this is the obscure part for proper MMC3 IRQs. If I block reads/writes $2006/$2007, the MMC3 IRQ tests still pass, but games are broken.
You know, this is the obscure part for proper MMC3 IRQs. If I block reads/writes $2006/$2007, the MMC3 IRQ tests still pass, but games are broken.