PDP-12 Restoration at the RICM
tdk.knight at gmail.com
Sun May 10 09:48:53 CDT 2015
have u though of just drilling its pivit point out and puting a metal rod
through to pin it?
On Sun, May 10, 2015 at 9:45 AM, Michael Thompson <
michael.99.thompson at gmail.com> 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
> > show some signs of life.
> > The CRT in the VR14
> > --
> > Michael Thompson
> Michael Thompson
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