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Date: Tue, 3 Oct 2000 10:30:16 -0700
From: Joe Smith <jsmith@inwap.com>
To: lars brinkhoff <lars@nocrew.org>
Subject: Re: Tymshare 26XL
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References: <851yy2c2ut.fsf@junk.nocrew.org> <8r72kl$mku$1@nntp1.ba.best.com> <854s2v8wtn.fsf@junk.nocrew.org>
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In-Reply-To: <854s2v8wtn.fsf@junk.nocrew.org>; from lars@nocrew.org on Mon, Oct 02, 2000 at 10:35:32AM +0200
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On Mon, Oct 02, 2000 at 10:35:32AM +0200, lars brinkhoff wrote:
> > About 10 of them were built.  Four were installed in-house at Tymshare's
> > facilities on Bubb Road or Valley Green Drive in Cupertino, the rest
> > were installed by Doug Engelbart (http://www.bootstrap.org) at an
> > Air Force base back East (Wright-Patterson?  Memory is hazy) as part
> > of the OFFICE and AUGMENTATION projects.
> > 
> > The prototypes (F4) used a custom board plugged into an Apple ][ for
> > loading the microcode and diagnostics.  The production models (26XL,
> > circa 1986) used an IBM PC-XT for that purpose.
> 
> Is any documentation about the supported instruction set (both user
> and system operations) available?

The 26XL ran an unmodified TOPS-20.  It's instruction set is the
same as the KL.
	-Joe

-- 
See http://www.inwap.com/ for PDP-10 and "ReBoot" pages.