[TUHS] Gnu/Stallman (was Bugs in V6 'dcheck')

Ronald Natalie ron at ronnatalie.com
Tue Jun 3 00:29:30 AEST 2014

On Jun 2, 2014, at 10:24 AM, John Cowan <cowan at mercury.ccil.org> wrote:

> Ronald Natalie scripsit:
>> Still with all it's flaws, on the 286 and later UNIX actually did run in
>> protected mode, something it took ages for DOS/Windows (one can argue
>> backwards compatibility with the early processors) or Apple (no excuse
>> here, the early Macs were 68000's which had protection) to pick up upon.
> The original Mac 128K was a 68000 processor, and IIRC memory protection
> didn't arrive until the 68020.
> -- 

Yeah, you're right.   You could get it off-chip with the -010 or it was integrated with the -020.

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