----------------Original Message----------------- From: "Philip Pemberton" <philpem(a)dsl.pipex.com> Subject: WTD: AMD or Intel 80387 Math Coprocessor IC Hi all, I'm trying to track down a 387 math coprocessor IC for an old 386-based Linux box that's going to be doing a bit of numbercrunching for me. Has anyone here got an AMD or Intel (AMD preferred) 387 coprocessor rated at 40MHz (-40 part number suffix) that would work correctly with an AMD Am386DX-40? No, before you ask, the 386DX does *not* have a built in mathco - the 486DX was (IIRC) the first DX-series chip with a built-in coprocessor. Thanks. ----------------------------------------------------------------- If you're not in a hurry, I've got a couple here; as noted elsewhere, I don't think Intel made any at that speed in the good old days and IIRC they were all second-sourced. The two that I have are a ULSI and a Cyrix, both 40Mhz, and both on boards using the AMD 386 DX-40.. I think you were also looking for a riser board to allow mounting ISA cards horizontally; might be able to help you out there as well, but would need exact dimensions. Finally, I haven't forgotten about the other stuff you & I were talking about, the PPT punch, reader and tape and the small footprint 386 boards, have just been dealing with a lot of other crap in the last while. Will be in touch ASAP, mike