Joel said:
>I agree with you.  Why have the different clock phases?

If you want this "emulator" to interact with the rest of the circuitry and
the world like a real PIC then you better have it do reads and writes on
the same phases of the clock as the real thing. Otherwise you are asking
for trouble. Timing differences between your "emulator" and a real PIC
can and will jump right up and bite you.

Brian