William Maddox sez...
PS. There is a NICE PDP-11 waiting to sold at
VCM. Note I don't have the
cash for it, or a way to get shipped safely here.
If you compare the picture of this machine with with the 11/20 on Guy Sotomayer's
site,
the front panel of the machine on VCM looks like it has been (inexpertly) modified. In
fact,
it looks like it has holes in it at the lamp positions, not even neatly lined up, as if
drilled with
a hand drill. I asked the seller about this, and he told me that the machine had LEDs,
not
lamps, but claimed that it came that way. I inquired about what appeared to be drilled
holes, and asked for some better closeup pictures, but never received any. I suspect
that
this machine was the victim of a lamp-to-LED "upgrade" by a previous owner,
unless it was
some kind of prototype that was never meant to be sold to a customer.
Here is a picture of what I think a PDP-11/20 is supposed to look like, with a smooth
front
panel surface like the PDP-8/L of similar vintage:
http://www.shiresoft.com/pdp-11/inventory.html
Well... other 11/20's look a little different :-) :-)
http://www.parse.com/~museum/pdp11/index.html
The 11/R20 is the first picture...
Cheers,
-RK
--
Robert Krten, PARSE Software Devices +1 613 599 8316.
Realtime Systems Architecture, Consulting, Books and Training at
www.parse.com
Looking for Digital Equipment Corp. PDP-1 through PDP-15 minicomputers!