If Intel only had retroactively updated the 8088/8086 line with the “8086-2” ISA (there are 8086-1 and 8086-2 chips, but they’re not related to the instructions set). The Z80 series had an ...

That’s probably because both the Z80 and the 8086 are derivatives of the 8080, which also had 0C9H as the opcode for return. Report comment. Reply. Eric says: July 17, 2023 at 5:26 am ...