Article View: comp.sys.ibm.pc.misc
Article #4004Re: 486 Upgrades
From: Robert Collins
Date: Wed, 17 Oct 1990 15:35
Date: Wed, 17 Oct 1990 15:35
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In article <1990Oct16.174133.22215@agate.berkeley.edu> ilan343@violet.berkeley.edu (Geraldo Veiga) writes: >Isn't "B6" the current revision of the 486? What is the risk of buying >an old version? $450 is too low for any Intel part, a 387 alone can >cost more than that. If memory serves me correctly, the B5 (that the original poster bought) has some rather serious NPX bugs (Numeric Processor eXtention) that only show up running under UNIX. Therefore, it is safe to run the B5 for DOS but not otherwise. These bugs were fixed in the B6. The errata dated 05/02/90 lists bugs in the C0 step. So, B6 has long been gone. The ICE-486 on my desk is based on a C0, or C1 -- as component ID information is 402. So, no the B6 isn't the current version of the 486. C0 has been out for around 6 months. -- "Worship the Lord your God, and serve him only." Mat. 4:10 Robert Collins UUCP: ...!sun!altos86!rcollins HOME: (408) 225-8002 WORK: (408) 432-6200 x4356
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!snorkelwacker!apple!altos!altos86!rcollins From: rcollins@altos86.Altos.COM (Robert Collins) Newsgroups: comp.sys.ibm.pc.misc Subject: Re: 486 Upgrades Message-ID: <4264@altos86.Altos.COM> Date: 17 Oct 90 15:35:27 GMT References: <4665@bwdls58.UUCP> <1990Oct16.160729.1363@thyme.jpl.nasa.gov> <1990Oct16.174133.22215@agate.berkeley.edu> Reply-To: rcollins@altos86.UUCP (Robert Collins) Organization: Altos Computer Systems, San Jose, CA Lines: 24