So it is exactly like a'
Many systems either NOR against the null flag, or have a hardware register inverter. They can also have distinct opcodes that are the same operations just with inversions of certain inputs if a really large instruction set is fine. The x86 set has a mix of all of the above.
Many systems either NOR against the null flag, or have a hardware register inverter. They can also have distinct opcodes that are the same operations just with inversions of certain inputs if a really large instruction set is fine. The x86 set has a mix of all of the above.