Re: Bios for Citygate Harris 286 motherboard
Posted on 2022-08-27, 00:07
Assuming your 287 is an intel 287 not XL version. They run very hot and don't like any overclock. So it not runs at 16 or 20MHz. Try swapping the crystal to a desired frequency times 2 (25MHz to a 12.5MHs clock and so on) .