29 May
2015
29 May
'15
6:20 a.m.
If you haven't yet found one, I have spares for the switch cover - I
have an entire console and the backplanes (with the cards) whose machine
was disassembled out from underneath them.
JRJ
On 5/10/2015 9:45 AM, Michael Thompson wrote:
Sorry, I sent the message before I was finished.
The CRT in the VR14 has severe screen rot. Hopefully we can find a
replacement CRT, or get some help with removing the outer layer of glass.
One of the lime green switches on the front panel has broken pivots. Anyone
have a spare?
On Sun, May 10, 2015 at 10:42 AM, Michael Thompson <
michael.99.thompson at gmail.com> wrote:
The RICM is restoring a PDP-12. This system was
manufactured in December
of 1972, so it is very late in the life of the PDP-12. The Priority
Interrupt and the Data Multiplexer are hardwired in two extra columns in
the processor chassis. These options were in separate chassis in earlier
models. It came with an Omnibus expansion chassis that connects to the
Posibus from the PDP-12. The LP01, RK05, and PC04 controllers are in the
Omnibus chassis. The VR14 and TU56 controllers are in the processor
chassis. We got the LP01 too.
The donor did a great job of preserving the machine, and has all of the
original documentation and software. The processor and RK8-F prints are
newer than what I can find on the Web, so I will scan them and send the
PDFs to Bitsavers.
Yesterday we reformed the caps in the power supply and powered it on for
the first time in 24 years. It is going to need some debugging, but it does
show some signs of life.
The CRT in the VR14
--
Michael Thompson