Subject: Re: wikipedia article
To: Johnny Billquist <email@example.com>
From: Rick Kelly <firstname.lastname@example.org>
Date: 06/13/2006 06:23:46
Johnny Billquist said:
>> There's actually a cheesy way to do demand paging with microprocessors
>> that don't support demand paging (such as the original 68000--another
>> "16 bit" machine). The way to do this is to run two processors in parallel
>> but skewed by one instruction. If the first one does a bad memory fetch,
>> then the second one will not have fetched the instruction causing the
>> fault so contains restartable machine state. Masscomp sold a machine
>> like this once.
>Didn't the first Apollos do this?
And also the Sun 1.
Rick Kelly email@example.com