Single-height Qbus grant continuity PCB

Eric Smith spacewar at gmail.com
Tue Aug 14 11:25:20 CDT 2018


On Tue, Aug 14, 2018 at 9:52 AM, Tony Duell via cctalk <
cctalk at classiccmp.org> wrote:

> But I have here a little square board (the same size as the older Unibus
> grant
> continuity card) with just 2 pairs of pins linked. In the etch is a
> Digital logo (so
> I assume it's a real DEC product) and :
>
> LSI11 Grant
> Continuity
> G7272
> 5012564B
> Side 2
>
> Has anyone come across that one before?
>

Yes. It's not as common as M9047, and not as convenient, but it works.
There's reportedly also an M9037, which I've never seen.


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