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added ppu register access

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This commit is contained in:
Lauchmelder 2021-10-23 20:16:29 +02:00
parent 19d138fb5f
commit 7c0957325f
7 changed files with 113 additions and 19 deletions
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4
NES Emulator/cartridge.c
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@ -85,7 +85,7 @@ Byte readCartridge(struct Cartridge* cartridge, Word addr)
}
else if (0x8000 <= addr && addr <= 0xFFFF) // PRG ROM
{
val = cartridge->prg_rom[addr & 0x3FFF];
val = cartridge->prg_rom[addr % 0x4000];
}
return val;
@ -101,7 +101,7 @@ void writeCartridge(struct Cartridge* cartridge, Word addr, Byte val)
}
else if (0x8000 <= addr && addr <= 0xFFFF) // PRG ROM
{
cartridge->prg_rom[addr & 0x1FFF] = val;
cartridge->prg_rom[addr % 0x4000] = val;
}
}