Article View: comp.sys.ibm.hardware
Article #13Re: Can I use 8087 on 80286 motherboard?
From: Russ Poffenberger
Date: Sun, 02 Aug 1992 18:47
Date: Sun, 02 Aug 1992 18:47
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1699 bytes
chuj@horton.Colorado.EDU (CHU JEFFREY) writes:
: >big bridge to sell you... Or perhaps the Eiffel tower is more your speed??
: >
: > The Math Co. for the 487 is *built in*.....
:
: Yes, on the 486DX it has a built-in co-processor, but it also has a slot
: for another math co-processor called the Weitek 4167 (25/33). They
: price around $500.00 (last year cost wholesale cost). It is suppose
: do 3x the performance compare to the built-in co-processor. All 486DX
: (exception of a few) have the Weitek slot. My 486-25 last year didn't but
: when I got my 486-33DX last summer replacing the 486-25, it had the Weitek
: slot.
:
And on a 486SX, the CPU does NOT have a built-in math co-proc. These systems
usually come with an extra socket for which a 487SX is plugged in, which is
in effect a full 486DX in different packaging. Now, you can also get the
clock doubled overdrive processor as an upgrade.
Russ Poffenberger DOMAIN: poffen@sj.ate.slb.com
Schlumberger Technologies UUCP: {uunet,decwrl,amdahl}!sjsca4!poffen
1601 Technology Drive CIS: 72401,276
San Jose, Ca. 95110 Voice: (408)437-5254 FAX: (408)437-5246
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Newsgroups: comp.sys.ibm.hardware,comp.sys.ibm.pc,comp.sys.ibm.pc.hardware,comp.sys.ibm.pc.misc Path: arc1-ca.pugleaf.net!sparky!uunet!sjsca4!rushmore!poffen From: poffen@rushmore (Russ Poffenberger) Subject: Re: Can I use 8087 on 80286 motherboard? Message-ID: <1992Aug2.184718.25916@sj.ate.slb.com> Sender: news@sj.ate.slb.com Organization: Schlumberger Technologies, ATE division, San Jose, Ca. X-Newsreader: Tin 1.1 PL4 References: <1992Aug1.002327.15715@ucsu.Colorado.EDU> Date: Sun, 2 Aug 92 18:47:18 GMT Lines: 23