Article View: alt.folklore.computers
Article #608Re: PDP-8 hate
From: dbo... David Boyes
Date: Wed, 27 Dec 1989 06:53
Date: Wed, 27 Dec 1989 06:53
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In article <129...@sun.Eng.Sun.COM> linden@sun.UUCP (Peter van der Linden) writes: >The PDP-8 was a peculiar system. I first programmed one in 1977, >There are three instructions bits, hence 8 basic instructions in >the machine. Nowadays it would be lauded as a revolutionary RISC >architecture. It wasn't quite that simple then, e.g. because I/O >(instruction 6) didn't use the address portion of a word, and hence >this was available for further refining or extending the instruction >set. But you could do such *cool* things with the microprogrammed stuff with group 1 and group 2 instructions! Remember clearing the accumulator *and* the link bit using a single instruction -- 7300, wasn't it? Or doing an OSR and a SZA to do neat things with the address register lights? I miss that machine; a gift from Tek to a local high school I hung out near. >Peter van der Linden lin...@SuN.cOm (415) 336-6206 -- David Boyes Life is a fatal, sexually transmitted disease. dbo...@rice.edu
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Path: mbox-mo1.pugleaf.net!gmdzi!unido!mcsun!uunet!wuarchive!zaphod.mps.ohio-state.edu!samsung!caesar.cs.montana.edu!milton!uw-beaver!rice!dboyes From: dbo...@rice.edu (David Boyes) Newsgroups: alt.folklore.computers Subject: Re: PDP-8 hate Keywords: pdp-8 Message-ID: <3963@brazos.Rice.edu> Date: 27 Dec 89 06:53:12 GMT References: <129595@sun.Eng.Sun.COM> Reply-To: dbo...@brazos.rice.edu (David Boyes) Organization: Rice University, Houston, Texas Lines: 24 Posted: Wed Dec 27 07:53:12 1989 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit