Feelings about vintage systems

Al Kossow aek at bitsavers.org
Thu Aug 24 16:39:12 CDT 2006


> Well, the other choice at the time was the 68000.  32-bit registers,
> yes, but it had goofy quirks all its own (didn't you halt the CPU if you
> attempted to read memory not on word boundaries or something?

On the original 68000, instructions had to be aligned on 16 bit boundaries
or you'd get an instruction fault.

The associated stupidity was wasting a bit of the branch range by NOT having
the branch target word-aligned.







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