🚀 go-pugleaf

graeme@research.canon.oz.au (Graeme Wong See) writes:



>I was recently in a computer store where I saw a brochure for a 386
>motherboard (can't remember if it was a DX or SX motherboard) from Taiwan.
>In the specs under coprocessors it says that it can take either a 
>287 or a 387 maths coprocessor. Is this at all possible with either a DX or SX?
>Perhaps it is a typo but any clarification on the matter will be helpful.

Hi!

It's true; a friend of mine has a Finnish-made Nokia AWS/386 with *2*87, and
it runs fine.

The socket is a bit peculiar:  There are pin holes in square arrangement for
80387, and in two parallel rows for 80287, some of which are shared at the
same place.  Also, the 287 is 2/3 the frq of the CPU (like 12 MHz <-> 16 MHz)
as it often is with 287.

I don't know how much speed would be gained by using 387 instead.

Terveisin: Risto Lankinen
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Risto Lankinen / product specialist ***************************************
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