dmurdoch@watstat.waterloo.edu (Duncan Murdoch) (04/27/89)
I've got a no-name 386 clone that can only use an 80287. It uses the Chips and Technologies chipset, and has two crystals: a 32 MHz one, and a 12 Mhz one. From my reading of the very limited documentation, it looks like the 386 gets fed the 32 Mhz signal and internally divides it by two, so that I end up with a 16 Mhz 386. I can't quite figure out what signal goes to the 287, but it looks like it would be either 8 Mhz or 12 Mhz. My question: Does the 287 divide the clock by two? I.E., if it turns out that the 287 is getting the 12 Mhz clock, will it be running at only 6 Mhz? Please reply by email; I don't imagine many people need this information. Duncan Murdoch dmurdoch@watstat.waterloo.edu ...!watmath!watstat!dmurdoch