3 ms·
It's more like a cut-down Z80. Some registers are missing (note the list excludes IX and IY), as are some instructions (but a few others are added) and even som
by RetroSpark 7y ago
It's more like a cut-down Z80. Some registers are missing (note the list excludes IX and IY), as are some instructions (but a few others are added) and even some of the status flags.
The official name of the CPU is unknown - there's some discussion of that here: https://forums.nesdev.com/viewtopic.php?f=20&t=18335 https://forums.nesdev.com/viewtopic.php?f=20&t=18335