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- Path: sparky!uunet!munnari.oz.au!yoyo.aarnet.edu.au!dstos3.dsto.gov.au!myna!pzh
- From: pzh@myna.dsto.gov.au (Paul Heuer)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: Re: 10Mhz Math Co in 12 Mhz 286????
- Message-ID: <1992Aug28.103434.164426@dstos3.dsto.gov.au>
- Date: 28 Aug 92 16:34:33 GMT
- References: <1992Aug26.115154.1@woods.ulowell.edu>
- Lines: 37
- Nntp-Posting-Host: myna.dsto.gov.au
-
- edmondse@woods.ulowell.edu writes:
-
- >Hello,
-
- >I recently purchased a 12 Mhz 286 motherboard and am curious if I can use
- >my old 20287-10 math coprocessor in this slightly faster mainboard.
-
- >BTW, the 286 board is a 12/16 Mhz switchable model, is this going to cause
- >problems with the math coprocessor.
-
- >If anyone has used a similar setup I would be interested in hearing how
- >it worked out.
-
- >Thanks
-
- >Eric
-
- Eric,
-
- On our 12Mhz 286, the co-processor runs at 10Mhz. On a later 286 that we also
- use, the co-processor speed can be set up in the CMOS table. I presume you
- didn't get any manuals with the board so I suggest you have a look at the set-up
- table first and, if the coprocessor speed can't be set there then try the chip
- and see if it can hack the pace! BTW our motherboard can't manage 16Mhz so I
- can't be 100% sure of your situation.
-
- I hope these ramblings help...
-
- Cheers,
- Paul.
-
- Paul Heuer, E-mail : pzh@aeg.dsto.gov.au
- Avionics Engineering Group Phone : +61 8 259 6453
- Aeronautical Research Laboratory FAX : +61 8 259 5507
- Defence Science and Technology Organisation Post : Bld 37 TSAS
- AUSTRALIA PO Box 1550 Salisbury
- South Australia 5108
-