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- Newsgroups: comp.sys.ibm.pc.hardware
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!wupost!cs.utexas.edu!csc.ti.com!tilde.csc.ti.com!mksol!mccall
- From: mccall@mksol.dseg.ti.com (fred j mccall 575-3539)
- Subject: Re: 486 Concerns
- Message-ID: <1992Dec11.204656.11270@mksol.dseg.ti.com>
- Organization: Texas Instruments Inc
- References: <Dec.8.16.06.23.1992.11427@pilot.njin.net>
- Date: Fri, 11 Dec 1992 20:46:56 GMT
- Lines: 38
-
- In <Dec.8.16.06.23.1992.11427@pilot.njin.net> hardgrov@pilot.njin.net (Roy Hardgrove) writes:
-
-
- >Hello:
-
- >Ihave a question that has been burning my mind about the 486 chip. Is
- >the 486SX pin compatible with the 486DX?
-
- No.
-
- >If it is, then is it possible to put a 486SX in the CPU socket on
- >a 486DX motherboard?
-
- No.
-
- >My
- >understanding is that the SX chip is simply a DX that has had the
- >co-processor disabled by INTEL. Someone please enlighten me.
-
- Intel rearranged the pinout on the SX part. You cannot just pull it
- out and plug in a DX unless your motherboard is specifically designed
- to allow you to do that (and the CPU will come on a little daughter
- board to map the pins, or there will be jumpers to remap the pins).
-
- >Additionally, what is the scoop on the new CYRIX 486 chip? Is there a
- >pin compatible 486 replacement for the 386DX chip. If anyone has an
- >FTP address for CYRIX or AMD, please let me know.
-
- Yes, except it powers up with the cache (only 1k disabled). You'll
- either have to run something after you power on the enable the cache
- (there's a little DOS program that does this) or get a BIOS that
- supports enabling it for you.
-
- --
- "Insisting on perfect safety is for people who don't have the balls to live
- in the real world." -- Mary Shafer, NASA Ames Dryden
- ------------------------------------------------------------------------------
- Fred.McCall@dseg.ti.com - I don't speak for others and they don't speak for me.
-