The [Koei system](https://forums.nesdev.org/viewtopic.php?t=15931) is a bytecode used by games developed by [Koei](https://en.wikipedia.org/wiki/Koei) (founded in 1978, now known as Koei Tecmo) for the [[6502]]-based NES and SNES game consoles. # Notability # Instruction Set ## Complexity # Implementations 2 slightly different versions were implemented, one for each of these chips: https://www.nesdev.org/wiki/MMC1 https://www.nesdev.org/wiki/MMC5 # Footnotes # References