On Aug 7 2006, 15:14, Roy J. Tellason wrote: 8 MHz the thing the same material. They do have the same pinout, and a 68010 is a drop-in replacement for a 68000. Except they stopped making it ages ago, and it's easier to get a 68000 than a 68010. The 68010 fixed the problem of not being able to recover from an interrupted instruction, handles double bus faults correctly, added a few vectors, made the exception vectors relocatable, and fixed the problem that getting back to supervisor mode nonsense of any protection schemes). However, it has some other minor differences that mean it may not be 100% software compatible with a 68000, for example the revised exception stack frames. I'd have to dig out some very old course notes to tell you more. -- Pete Peter Turnbull Network Manager University of York