From mboxrd@z Thu Jan  1 00:00:00 1970
From: forsyth@caldo.demon.co.uk
Message-Id: <200006281938.PAA19779@cse.psu.edu>
Subject: Re: [9fans] SO for plan9?
Date: Wed, 28 Jun 2000 20:35:26 +0100
To: 9fans@cse.psu.edu
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>>picked the Three Rivers Computer
>>Corporation's PERQ (ICL sold these
>>in Britain.)  These gadgets were

the original microcode provided elaborate yet frustrating instructions,
and didn't work all that well.
ICL replaced the Three Rivers microcode to produce a much
faster, more reasonable target, for C and other languages
(I did a Pascal compiler for that version), and ported Unix
to it.   it used a variant of layers for the graphics.
it was not too bad (the user interface had one odd feature),
but Suns had begun to appear by that time and the project was dropped.