That is a great, succint summary of the issues involved. :lisa2:
The number one thing as mentioned is the voltage difference.
Number two is that only the "User Mode" of the 68060 is instruction-compatible with the same in the 68040. Mac OS runs in the "Supervisor Mode" of the CPU, which expressly is not 100% the same.
The number one thing as mentioned is the voltage difference.
Number two is that only the "User Mode" of the 68060 is instruction-compatible with the same in the 68040. Mac OS runs in the "Supervisor Mode" of the CPU, which expressly is not 100% the same.