4 ms·
Well, if you really want to nitpick, there are quite a few instructions in the 6502 that are unnecessary. For example, STX. You could emulate it with PHA, TXA,
by hota_mazi 4y ago
Well, if you really want to nitpick, there are quite a few instructions in the 6502 that are unnecessary.
For example, STX. You could emulate it with PHA, TXA, STA, PLA.
But overall, you are correct that the 6502 was extremely primitive in various ways, especially compare to the 8080 and followers.
- tom_ 4y agoYou'd need PHP/PLP too! STX doesn't affect the N and Z flags.