3 Feb
2002
3 Feb
'02
2:01 a.m.
I think the original post was a plea for a replacement board, because he had
confidence issues with his board.
see below, plz.
Dick
----- Original Message -----
From: "M H Stein" <mhstein(a)canada.com>
To: "'ClassicComputers'" <classiccmp(a)classiccmp.org>
Sent: Friday, February 01, 2002 7:13 PM
Subject: Looking for a WD 1001 55 Disk controller
Sounds similar to the one I've got; it does have
provision for four
data cables, but only two have connectors installed. So what does
this 40 pin host connector connect to?
The 40-pin connector, in no way similary to IDE, in case you're wondering, has
8-bit data, 3 addresses, a read and a write signal, and a card-select, along
with a DRQ, an IRQ, and a RESET. The board works pretty similarly to the
somewhat later versions using the WD1010 chip.
And what happened to the person who started this thread? Was he
looking for a chip or a board?
mike
--------------Original Message------------
From: "Richard Erlacher" <edick(a)idcomm.com>
Subject: Re: Looking for a WD 1001 55 Disk controller
The WD 1001-55 (the "BIG" version) had four data cable connectors, IIRC. In
fact, it didn't look very different from the 1000-55 at all. Both of those
boards used the 8X300/305 (depending on version) and the WD1100 chipset. I
had the datasheet for that board in my hands less than two hours ago, but
don't now remember where ... <sigh> another senior moment, I guess. The
small versions (1000-05, etc) used the WD1010 chip and a couple of others.
They do seem to be pretty much interchangeable, though. My own WD 1000-55
board had a 50-pin connector rather than a 40-pin host connector. The extra
signals were just ground and power, though. The ones I've kept only have
the
40-pin host connector, which makes them all compatible
at the interface.
Dick