G888 modules for TC11/TU56

[Ashley Carder]

> 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