Tbf, the 6502 is super limited even by modern standards I think. I don't really think any of the instructions cannot find some use, not a single one. I think th

Tbf, the 6502 is super limited even by modern standards I think. I don't really think any of the instructions cannot find some use, not a single one. I think the only real instructions that you could think are not really "needed" are the "illegal opcodes[0]." Some games / demos including commercial ones use them, either for efficiency or just because I guess. A good "just because" reason I know of is for code obfuscation to deter disassembly and copyright infringement. [0] https://www.masswerk.at/6502/6502_instruction_set.html#illegals https://www.masswerk.at/6502/6502_instruction_set.html#illeg...