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- Newsgroups: comp.sys.intel
- Path: sparky!uunet!mcsun!sun4nl!rulway.LeidenUniv.nl!rulhp1.leidenuniv.nl!leo
- From: leo@rulhp1.leidenuniv.nl (L. Mekenkamp)
- Subject: Re: Simple CPU Questions
- Message-ID: <1993Jan6.151714.14179@rulway.LeidenUniv.nl>
- Sender: Leo Mekenkamp (MEKENKAMP@RULWINWST.LEIDENUNIV.NL)
- Nntp-Posting-Host: rulhp1.leidenuniv.nl
- Organization: Dept. of Mathematics and Computer Science ; Univ. of Leiden ; the Netherlands
- References: <72263@cup.portal.com> <1993Jan5.121048.9355@uxmail.ust.hk> <1993Jan5.212031.29177@ptdcs2.intel.com>
- Date: Wed, 6 Jan 93 15:17:14 GMT
- Lines: 14
-
- >> The released of 486-SX is used to offer a high performance CPU and
- >>same price of AMD 386-40. The Co-process in the die is disabled by intel.
- >>Because those die a selected from 486 production line that the co-processor
- >>part was failed during production.
- >>
- >I believe this is incorrect. The 486SX is physically different from
- >the 486DX. The 486SX is NOT a 486DX whose coprocessor circuits do not work
- >due to some defect and is sold as such.
-
- I believe the first 486SX chips *were* in fact 486DX chips with the copro
- disabled. Intel used another design in later versions of the SX
-
- Leo Mekenkamp
-
-