Article View: sci.electronics
Article #7644Re: "Name These Chips"
From: Michael van Elst
Date: Mon, 08 Oct 1990 16:54
Date: Mon, 08 Oct 1990 16:54
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In article <1990Oct6.215013.21449@bpdsun1.uucp> rmf@bpdsun1.UUCP (Rob Finley) writes:
>My favorite was the Motorola 1-bit cpu chip. Don't remember too many
>details except an 8085 was cheaper. They did have an app note where
>it controled traffic signals. Hmm. Wonder how it did that... B-).
No problem, you could extend the opcodes with an address field
and use a multiplexer to select an input channel. The finest thing
was that it didn't have a branch instruction. You could store the
result of an operation into a flag and it would continue reading
instructions (but not execute them) until a clear_flag instruction
was found.
--
Michael van Elst
UUCP: universe!local-cluster!milky-way!sol!earth!uunet!unido!mpirbn!p554mve
Internet: p554mve@mpirbn.mpifr-bonn.mpg.de
"A potential Snark may lurk in every tree."
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!mcsun!unido!mpirbn!p554mve From: p554mve@mpirbn.mpifr-bonn.mpg.de (Michael van Elst) Newsgroups: sci.electronics Subject: Re: "Name These Chips" Message-ID: <1284@mpirbn.mpifr-bonn.mpg.de> Date: 8 Oct 90 16:54:01 GMT References: <9689@uhccux.uhcc.Hawaii.Edu> <4083@kitty.UUCP> <1990Oct5.152413.24200@zoo.toronto.edu> <1990Oct6.215013.21449@bpdsun1.uucp> Reply-To: p554mve@mpirbn.UUCP (Michael van Elst) Organization: Max-Planck-Institut fuer Radioastronomie, Bonn Lines: 18