The commodore 128 allowed the same trick of moving the machine stack and zero page. But the 6510 processor didn't have useful multiple-push or multiple-pull i

The commodore 128 allowed the same trick of moving the machine stack and zero page. But the 6510 processor didn't have useful multiple-push or multiple-pull instructions so the possible speedup wasn't as much. Also in practice people writing games for the commodore targetted the C64 as it was a much larger market and the 128 was backwards conpatible so nobody bothered witb 128-only tricks like that.