Unibus (was Re: VMS Documentation CD-ROM &unibus question)

From: Ethan Dicks <ethan_dicks_at_yahoo.com>
Date: Wed Jun 13 18:10:37 2001

--- Pete Turnbull <pete_at_dunnington.u-net.com> wrote:
> On Jun 13, 6:47, Ethan Dicks wrote:
> > Does anyone know of a modern connector that will substitute for a real
> > DEC connector? ...0.125" centers
> ...The housing part of course is shaped to ensure you don't plug a dual- or
> quad-height card in backwards.

Until the keys break off. In any case, you can insert a board in backwards
far enough to do damage at power on. At least with >1970 stuff, the handles
not locking into place are a bit clue that you've screwed up.

For an H851, it won't matter which way they go. It's pin-1-to-pin-1, pin-2-
to-pin-2, etc. A real H851 is keyed, but it will work both ways.

I'm now working on samples of a 28/56-pin connector to see how well it
will work cut down. Considering I need >10 H851s, I might as well find
a way to crank up a small pilot run. I know I'm not the only one who
needs these. Given the parts costs, would people _pay_ $20 each for
a bastardized modern replacement? I know I would knot up at paying $20
for a *real* H851.


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Received on Wed Jun 13 2001 - 18:10:37 BST

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