Article View: comp.arch
Article #21800Re: Japanese Josephson breakthrough? Implications?
From: Piercarlo Grandi
Date: Wed, 20 Dec 1989 17:40
Date: Wed, 20 Dec 1989 17:40
24 lines
1766 bytes
1766 bytes
In article <25177@cup.portal.com> mmm@cup.portal.com (Mark Robert Thorson)
writes:
Hmmm... 26,000 devices, that's about 1.5 ENIAC's? I wonder what sort of
architecture they used? The most useful things I can think of at that
level would be a rasterizing engine and a cryptographic machine.
I may be entirely wrong, but the Z8000, which is not a terribly useless
processor, and used to run Unix multiuser without trouble at the level of a
PDP-11/44 or a VAX 750, was something like 17,000 gates/transistors/devices
or whatever (yes, I know that the "whatever" matters), which is in the same
ballpark. Anybody knows better?
Actually, has anybody thought of the Z8000 as a "RISC"/simple machine (sure
the architecture was clean enough), and/or thought doing it in GaAs or other
fast, low density technology?
In case you have not understood, I liked the Z8000 a lot. If only IBM had
chosen it instead of the 8088/8086... If only Zilog had managed to do an MMU
and restartable instructions soon enough...
--
Piercarlo "Peter" Grandi | ARPA: pcg%cs.aber.ac.uk@nsfnet-relay.ac.uk
Dept of CS, UCW Aberystwyth | UUCP: ...!mcvax!ukc!aber-cs!pcg
Penglais, Aberystwyth SY23 3BZ, UK | INET: pcg@cs.aber.ac.uk
Technical Details
Message-ID:
<1546@aber-cs.UUCP>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!mcsun!ukc!dcl-cs!aber-cs!pcgShow Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!mcsun!ukc!dcl-cs!aber-cs!pcg From: pcg@aber-cs.UUCP (Piercarlo Grandi) Newsgroups: comp.arch Subject: Re: Japanese Josephson breakthrough? Implications? Summary: Was the Z8000 something liek 17,000 devices or whatever? Message-ID: <1546@aber-cs.UUCP> Date: 20 Dec 89 17:40:32 GMT Reply-To: pcg@cs.aber.ac.uk (Piercarlo Grandi) Organization: Dept of CS, UCW Aberystwyth (Disclaimer: my statements are purely personal) Lines: 24