23 Nov
2006
23 Nov
'06
11:37 a.m.
On 23 Nov 2006 at 10:38, Mr Ian Primus wrote:
Coprocessor. The SX CPU's didn't have a math
coprocessor onboard, so that socket is meant for a
80487 math coprocessor. You don't need it, the DX has
one already.
The insanity of the 486SX--basically a 486 with the FPU disabled as a
marketing ploy Sold for substantially less than the 486DX, even
though it cost more to make. Adding a 487SX often cost more than
simply replacing the 486SX with DX--so some canny manufacturers got
the SX in PQFP form (like the 386SX) and soldered the bloody thing to
the mobo.
But many 486 mobos could accept the Weitek 4167 alongside a DX. I
have one such mobo kicking around here somewhere.
Cheers,
Chuck