2 Nov
2018
2 Nov
'18
10:12 p.m.
On Sat, 03 Nov 2018 15:13:16 +1100
Guy Dunphy via cctalk <cctalk at classiccmp.org> wrote:
This is rather sad.
I've received a PDP-8/S. It turns out to be missing so much, that
it's probably beyond restoration. Anyone who can think of potential
ways to find the missing parts, please speak up.
http://everist.org/pics/PDP-8S/
Missing:
- Front panel PCB,
- Case top AND bottom,
- Power supply.
- Some flip-chip slots are empty. Not sure if supposed to be.
I have a restored and running PDP-8/S.
It looks to me that you're not missing modules - the open slots are
for the I/O cables.
The P/S is a standard DEC linear P/S and can be easily substituted until
you come across the real thing.
You need to get the schematics for the version of the PDP-8/S you have
and check the modules in your system against the module chart.
When you say the front panel PCB is missing - do you mean that there
is not a large circuit board with incandescent lamps in the system?
That would seem unusual to me - given that all the switches are on the
front panel.
Also there's no sign of any I/O circuitry.
There is NO I/O on a PDP-8/S. The I/O cables connected to any I/O that
existed.
Please get a PDP-8/S service manual and schematics...
A curse on slack people who remove stuff from a
machine for servicing
or whatever, then never got around to putting it back. Resulting in
this kind of tragedy.
I may not be as you think...
Lyle
--
73 NM6Y
Bickley Consulting West Inc.
http://bickleywest.com
"Black holes are where God is dividing by zero"