> The jump instructions were 3 bytes Absolute jumps ("JP") were 3 bytes, relative jumps ("JR") were two, whether conditional or not -- but, that's still longer

> The jump instructions were 3 bytes Absolute jumps ("JP") were 3 bytes, relative jumps ("JR") were two, whether conditional or not -- but, that's still longer than the 1-byte return instruction...; Though, absolute jumps were the fastest - they did not need to access the stack and adjust SP like "ret", and did not need to do addition like "jr". I used to know the opcodes by heart, but I last wrote Z80 code in 1987, and last wrote x86 machine code in 1997, and nowadays I don't remember all of the binary representations, and sometimes I get the binary representations of the two mixed. I'm getting old ...