4 ms·
It’s very suspicious to me that it was “not specified” but the opcode list has holes exactly where you would expect the ROR instructions to go. I want to see th
by krallja 6y ago
It’s very suspicious to me that it was “not specified” but the opcode list has holes exactly where you would expect the ROR instructions to go. I want to see the ALU and decode ROM PLA to figure out the truth about what was taped out. Did a team of dozens really forget to add ROR but included SHR, ASL, and ROL? Or did they make a mistake in the mask?
- kens 6y agoIn any case, if someone gets die photos of a 6502 that's missing the ROR instruction, I can analyze it and explain what's going on.