PDP-8/A limited function panel wiring?

From: Gunther Schadow <gunther_at_aurora.regenstrief.org>
Date: Sat Dec 22 19:42:43 2001

Actually, I had two such cables with one damaged headers each.
So I made one good cable out of those. It worked and yes, it
is absolutely required to have or else the thing won't power
up at all. Thanks for the advice.

-Gunther

Tony Duell wrote:

>>However, there are a few more issues to resolve first. The
>>little 16-pole ribbon cable that has DIL chip-like plug on
>>both ends that go into a chip-socket. That plug is bent and
>>pins are broken off. Seems like that happnes all the time.
>>Do I have to and if so how can I replace this? This cable
>>
>
> Yes, you can replace it, but I'd probably re-make the cable....
>
> The connector you need is called (at least over here) a 16 pin DIL IDC
> header. But there are 2 different types -- the common one links pin1
> (numbering the pins as if it were an IC) to the second wire of the cable.
> But I have once seen one that links pin 1 to the first wire of the cable.
>
> Obviously for a straight-through cable, DIL header to DIL header, it
> doesn't normally matter which type you use provided both are the same. I
> don't know which type DEC used on this cable (you might be able to check,
> though), which is why I'd re-make the entire cable.
>
> You'd need 2 such DIL IDC headers and a suitable length of ribbon cable.
> If you can't find 16 way cable, get the next widest one (20 way?) and tear
> off the excess wires.
>
> Just crimp the headers onto the end of the cable, using a bench vice. To
> prevent mangling the pins when doing this. stick the header into one of
> those solderless plugblock 'breadboards' and squeeze the whole thing up
> in the vice. That, BYW, is the only use for such breadboards IMHO :-).
>
> -tony
>


-- 
Gunther Schadow, M.D., Ph.D.                    gschadow_at_regenstrief.org
Medical Information Scientist      Regenstrief Institute for Health Care
Adjunct Assistant Professor        Indiana University School of Medicine
tel:1(317)630-7960                         http://aurora.regenstrief.org
Received on Sat Dec 22 2001 - 19:42:43 GMT

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:33:41 BST