UNIBUS extension card/cable sets Was: Looking fo
wilson at dbit.com
Mon Jun 22 11:23:38 CDT 2015
On Mon, Jun 22, 2015 at 11:46:08AM -0400, Noel Chiappa wrote:
> > I've seen M9014s only at the far end of the UBAs on a KS10, so it
> > wasn't taking the place of a BC11.
>??? If it wasn't take the place of a BC11 (i.e. proving a path for the UNIBUS
>out), what was it doing?
OK then I guess it *was* taking the place of a BC11. :-) I just meant it
wasn't jumping directly from one DD11 to another, so the "source" end
really was three Bergs, not a DD11 slot. I've seen that done only with the
fancy flexprint cable, not two paddles and three ribbon cables, so I was
kind of assuming that there's some impedance-matching (etc.) problem with
using ribbon cables for more than one hop. But then again ... I chose the
digital version of EE as my major precisely because I knew I'd flunk Fields
and Waves. Transmission lines are black magic as far as I'm concerned!
More information about the cctalk