PDP-11/23 Debugging

Ben Sinclair bensinc at gmail.com
Mon Nov 17 08:56:09 CST 2014

Thanks for all of the info! I was going off a PDP-11/23 manual I found that
seemed to be for a complete system, and it was saying the aux switch was
for power (power to an RL02 in their example). I didn't realize it was

I wasn't clear though on the discussion about the line clock... If my
machine is having problems with the line clock, would I need to do anything
to the aux switch, other than leave it in a certain position?

On Mon, Nov 17, 2014 at 8:49 AM, Noel Chiappa <jnc at mercury.lcs.mit.edu>

>     > From: Noel Chiappa
>     > There's documentation somewhere (don't recall off the top of my head
>     > ..) about how to configure the Aux switch.
> Remembered where I saw it: in the "PDP-11/23B Mounting Box User's Guide"
> (EK-23BMB-UG-001), available here:
> http://www.computer.museum.uq.edu.au/pdf/EK-23BMB-UG-001%20PDP-11-23B%20Mounting%20Box%20User's%20Guide.pdf
> among many other places, on pp. 2-3 and 2-4. (This manual talks about the
> BA11-S, but the front panel configuration is the same for other boxes - my
> BA11-N has the exact same hardware on the front panel.)
>         Noel

Ben Sinclair
ben at bensinclair.com

More information about the cctalk mailing list