G888 modules for TC11/TU56

From: Ashley Carder <wacarder_at_usit.net>
Date: Fri Feb 25 08:00:42 2005

> Ashley wrote about a TC11 DECtape control for a PDP-11, which
> is missing all five G888 Manchester Read/Write modules:
>
> The only thing that's special about them is that they're only
> used for DECtape.
>
> > and why all of them would be missing?
>
> Aside from pulling them for use in another TC11, someone
> might have wanted to install them in a TU56 that they were
> going to use on a TD8-E control for an Omnibus PDP-8 system.
>
> If you're lucky, maybe your TU56 will come with G888 modules
> installed, in which case you should pull them out and put them
> in the TC11. G888 modules should never be installed in a TU56
> unless it's being used with the TD8-E.

Thanks for the explanation, Eric.

It turns out that I'm lucky. The TU56 has the G888 modules in it.
I'll have to rearrange the modules once the TU56 arrives. I need
to pull everything out and clean it all anyway, blow the dust out,
wash off the grit and grime, etc. I plan to inspect each card, all
the wires, backplane, etc., before I attempt to do anything with
the TU56/TC11. I also need to locate an H720 power supply.

Ashley
Received on Fri Feb 25 2005 - 08:00:42 GMT