On 7 May 2007 at 21:02, John Kourafas wrote:
I have a WD1006-WAH & WD1003V-MM2 mfm hard
drive controllers. I have the
WD Products text file from their old BBS (Feb 1989), my question is about
the "high speed AT systems" which WD says is 10 to 16Mhz, does this actually
mean these cards will not run in higher speed ISA systems like a 386 25mhz?
I believe they're talking about *bus* speeds. In any case, I've used
the 1006WAH and 1006SR2 sucessfully on a 100Mhz 486 DX4 system.
Aside from a few oddball "times things in a CPU loop" cards, most ISA
cards should work in modern (e.g. PIII, P4 CPU) systems. ISA bus
timings haven't changed drastically from the old PC-AT days. Heck,
I've even found PII ISA buses that are *slower* than the original PC-
AT
Cheers,
Chuck