3 Oct
2008
3 Oct
'08
7:28 p.m.
On Friday 03 October 2008 21:56, Ethan Dicks wrote:
On Fri, Oct 03, 2008 at 09:30:18PM -0400, Roy J.
Tellason wrote:
Duh! :-) I should've taken note of that...
In going through my stuff I've come across
some boards that may be of
interest. I've uploaded some pictures here:
http://mysite.verizon.net/rtellason/pa020085.jpg
I'm not sure what this is. The big ceramic cased device is an 8x300
series part, maybe 8x305? I can double-check that if anyone's
interested. The rest of the board is generic TTL mostly.
It says on it "WD1001" - it's a Western Digital WD-1001 disk controller.
I've never had one that old, but it resembles other 8-bit disk controllers
of the era that I have seen. The mounting bracket makes me think of one
of the early clone machines - Eagle? 
It appears to support up to 4 drives (from counting
connectors).
Could be. The transformer is definitely similar to the line transformers I've
seen in modems. The TO-66 cased device on that end of the board is _not_
simply a transistor, it has 8 or 9 pins in a circle, something I'd meant to
mention in my post but forgot until I looked at the pic again. That board
also appears to have a bunch of configuration stuff done by soldering jumpers
in various places.
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
http://mysite.verizon.net/rtellason/pa020086.jpg
http://mysite.verizon.net/rtellason/pa020087.jpg
This one I have no idea about, most of the 14/16-pin parts are generic
4000-series CMOS and the 8-pin parts appear to be linear chips, op amps
and such. The second pic is the panel on the left side of the first pic.
I don't know what that one is, either, but UDS made modems and autodialers
and such - perhaps some critical telecom-function daughtercard sits on
those female molex connectors? 
