4 ms·
At this point the 68010 had been available for a long time and the 68020 was just released. These still had no MMU but had much better bus error handling than t
by yuhong 11y ago
At this point the 68010 had been available for a long time and the 68020 was just released. These still had no MMU but had much better bus error handling than the 68000. In retrospect, it was probably trivial to do 68000/68010 versions of the same CPU by just changing the microcode.
- Turing_Machine 11y agoThe 68010 and the 68020 both had (external) MMUs available. In those days, the MMU and FPU were almost always separate chips (I can't think of any exceptions, though there might have been some). Granted, the one for the 68010 sucked pretty bad.
- yuhong 11y agoYes, this is exactly what I mean. There was Motorola's own MMUs, but custom MMUs based on discrete logic was also common.