From: jpero_at_sympatico.ca <(jpero_at_sympatico.ca)>
Date: Sat Oct 27 19:52:03 2001

> I was hired to worry those matters. Nevertheless, I've got a '386 motherboard
> sitting downstairs somewhere that uses a '287 rather than the usual '387. I

Confirmed, I had one and soon became flaky. Was 386DX 25 baby AT w/
socket for 387 or 287, based on 386dx C&T (yeech!) chipset, no
support for cache, black and white AMI screen. Yes it existed.

> didn't buy it for that reason, but I did keep it for that reason. If I'd gotten
> enough documentation to explain what was going on, I'd have more info for you,
> but with the PC-"standard" falling apart with the release of the '386, because
> IBM no longer provided a firm ISA-equipped standard that everyone else could
> clone, there was nothing but chaos, and that's the way it's been ever since.
> The whole concept of "standard" was corrupted in the course of this evolutionary
> step, and it was a step into the quagmire we're all swimming in today.

Bit better now for last few years. 91-95 was the worst years.

> BTW, if that "bulky old PSU" still works, I'd happily relieve you of the fan and
> PSU board, and pay you for the freight, except for where you're located. I find

Exactly, I did this to extract decent fans from them. Few days ago
swapped ATX windy noises has that noise killer sticker yeah right!
For quieter fan.

> The ISA Ram will run at the ISA rate, which is not terribly fast, but it's
> normally as fast as the CPU requires. Unfortunately, the ISA clock is a
> STANDARD, at 8 MHz, so, even in cases where the CPU runs at 10 or 12 MHz, (I've
> got one that runs at 24), the ISA is still limited by that 8 MHz clock.

Not usually, junky clones had odd ISA clocks and some were too high.

> Dick

Received on Sat Oct 27 2001 - 19:52:03 BST

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