compact pdp11 and front panel

Dave McGuire mcguire at
Mon Mar 2 11:34:54 CST 2009

On Mar 2, 2009, at 11:52 AM, Patrick Finnegan wrote:
>> Does anyone know anything about shoehorning a front panel with lots
>> of lights and switches onto a compact pdp11 (say, a /73 or /83)?
> I think that the easiest way to do this (and what I would probably do)
> would be to put some sort of microcontroller in line with the console
> port, and make it use ODT to do front-panel functions.  That won't get
> you a switches and lights register, but it'll get you most of the
> functionality that is available on a Unibus-11's FP.
> With a little bit of hardware hackery (probably not even that much, if
> you don't mind modifying a console SLU board to do it), you could
> probably even put a switch and lights register on the QBUS, along with
> intercepting the console port for ODT.

   I think that is a REALLY good idea!


Dave McGuire
Port Charlotte, FL

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