Path: utzoo!utgpu!water!watmath!clyde!att!rutgers!mailrus!cornell!uw-beaver!teknowledge-vaxc!sri-unix!garth!smryan
From: smryan@garth.UUCP (Steven Ryan)
Newsgroups: comp.arch
Subject: Re: ETA-10: CMOS or ECL?
Message-ID: <1583@garth.UUCP>
Date: 16 Oct 88 00:10:49 GMT
References: <3539@phri.UUCP>
Reply-To: smryan@garth.UUCP (Steven Ryan)
Organization: INTERGRAPH (APD) -- Palo Alto, CA
Lines: 10

>                                                          Is it really
>CMOS?  I always thought of CMOS as pretty slow stuff, just pushing the
>speed of normal TTL, and certainly not supercomputer stuff.

Yes, it uses slow chips. The trick is the chips are dense and the whole
CPU fits on one board, I think it was about a foot x foot. The faster
models are bathed in liquid nitrogen.

Lincoln decided to use a slow technology but very dense so that the shorter
off-chip delays dominate.