Not at all surprising, considering that the earlier Commodore C-128 had both a MOS 8502 chip and a Zilog Z80 chip -- latter was purely for a separate CP/M boot

Not at all surprising, considering that the earlier Commodore C-128 had both a MOS 8502 chip and a Zilog Z80 chip -- latter was purely for a separate CP/M boot environment, it never ran concurrently.