"Michael J. Mahon" wrote: > > No need to crack the case. If it's an accelerated //c (not a //c+) > there's only one likely possibility--a Zip Chip, running at either > 4 MHz or 8 MHz. > > It is easily disabled at boot or reset time by holding down the > Escape key. > > -michael Another possibility is a RocketChip at 5 or 10 mhz.