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Article #1378Re: Simple CPU Questions
From: Sam Sivakumar
Date: Tue, 05 Jan 1993 21:20
Date: Tue, 05 Jan 1993 21:20
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In article <1993Jan5.121048.9355@uxmail.ust.hk> ee_hflo@uxmail.ust.hk (Michael Lo Ho Fung) writes: > 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. This technique however is not uncommon in the industry, especially in the case of microcontrollers. Very often, microcontrollers whose logic portions do not work can be sold as EPROMs, since microcontrollers, for the most part, are logic cores surrounded by a fair amount of memory. Sam -- Sam Sivakumar | Intel's very own lithography dude, ssivakum@ptdcs5.intel.com | Speakin' for himself, that's for sure! PTD, Aloha, OR |
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Newsgroups: comp.sys.intel Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!swrinde!gatech!asuvax!chnews!hfglobe!ptd!ssivakum From: ssivakum@ptdcs2.intel.com (Sam Sivakumar) Subject: Re: Simple CPU Questions Message-ID: <1993Jan5.212031.29177@ptdcs2.intel.com> Organization: Intel Corporation -- Aloha, Oregon References: <72263@cup.portal.com> <1993Jan5.121048.9355@uxmail.ust.hk> Date: Tue, 5 Jan 1993 21:20:31 GMT Lines: 20