3 ms·

Nice. Nitpick: Your 6502 is missing decimal mode (bcd) addition/subtraction. Also, consider cycle counting for accurate emulation use.

• mococa 2y ago
  Thank you. I will skip this, my plan is to build a NES emulator, and its 6502 chip version does not have it. Maybe in the future for others :D
  • pipo234 2y ago
    Ah. The Ricoh asic. Makes sense, yes.