29 Jan
2002
29 Jan
'02
4:29 a.m.
The last board is a 919 UNIBUS connector with long
cable connecting
into another drawer. That one is a backplane of unknown nature. It
has one card to play the UNIBUS adapter, then a whole bunch of
MEGATEK cards all together making up a frame-buffer and digitizer
assembly that was used for a SCICARDS circuit layout system. Any
shred of information about this would be appreciated. I don't think
its UNIBUS or QBUS (no grants between the two clusters of cards.)
Quite likely. I know in years past, I worked with a unibus VAX that
had a drum transparency scanner attached. (It was a really nice
scanner, too; if I'd had hardware interface docs and space, I'd've
snagged it on its way out.) This is relevant because the interface to
it consisted of a section of what looked like unibus backplane that had
been completely rewired (or perhaps it started as bare card-edge
connectors and calling it _re_wired is inappropriate :-). There were a
half-dozen or so boards that had to be plugged into this special
section of backplane, each in the right slot.
It wouldn't surprise me a bit if your framebuffer/digitizer was done
similarly.
Ah, working with the 780 and 750. Those were the days.
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