Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site peora.UUCP Path: utzoo!watmath!clyde!cbosgd!ihnp4!houxm!vax135!petsd!peora!jer From: jer@peora.UUCP (J. Eric Roskos) Newsgroups: net.arch Subject: Re: How to fab One-Of-A-Kind systems? Message-ID: <960@peora.UUCP> Date: Mon, 20-May-85 12:43:39 EDT Article-I.D.: peora.960 Posted: Mon May 20 12:43:39 1985 Date-Received: Wed, 22-May-85 02:10:34 EDT References: <202@ganehd.UUCP> <183@geowhiz.UUCP> <1143@sjuvax.UUCP> <735@ssc-vax.UUCP> <3339@utah-cs.UUCP> <10764@brl-tgr.ARPA> Organization: Perkin-Elmer SDC, Orlando, Fl. Lines: 22 ron@brl-tgr.ARPA (Ron Natalie at Ballistic Research Lab) writes: > The backplanes of the HEP, one of the worlds fastest computers with the > worlds slowest I/O system are wire wrapped. For that matter, wire-wrapped backplanes were extremely common until fairly recently. Look at most of the old DEC (KL10, PDP8-L, etc) and NCR (100 family) machines, for example. These contain backplanes wire-wrapped many layers deep. However, the wire-wrap was with stripped wire. My experience with the "just wraps" style tools, particularly when used by people who were relatively inexperienced with them, has not been good. But... to raise a different question... why does the HEP have "the world's slowest I/O system"? -- Full-Name: J. Eric Roskos UUCP: ..!{decvax,ucbvax,ihnp4}!vax135!petsd!peora!jer US Mail: MS 795; Perkin-Elmer SDC; 2486 Sand Lake Road, Orlando, FL 32809-7642 "Vg'f whfg guvf yvggyr puebzvhz fjvgpu urer... lbh thlf ner FB fhcrefgvgvbhf!"