"Brian A. Davis" <badavis@nbnet.nb.ca> writes:
Sorry, Roy. I was not specific enough. I have a PCPI Appli-card with a 6
MHz Z80B. On board the Appli-card is a 12 MHz oscillator. This is what I
was thinking of changing. I did not mean the oscillator on the Apple IIe
motherboard.
The PCPI Appli-card has its own 64k RAM bank, so the only interactions
between the card and the Apple IIe motheboard are I/O calls (I think).
It *might* work. But even if it seems to work, I wouldn't count on it
being reliable. Running it faster than designed will probably result
in the memory timing being on (or over) the hairy edge.