17 Nov
2014
17 Nov
'14
2:49 p.m.
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%20Mou…
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
17 Nov
17 Nov
2:56 p.m.
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
configurable.
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>
wrote:
--
Ben Sinclair
ben at bensinclair.com
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%20Mou…
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
5:19 p.m.
On Nov 17, 2014, at 8:56 AM, Ben Sinclair <bensinc
at gmail.com> wrote:
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
configurable.
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?
Because if you are getting unexpected LTC interrupts with the AUX switch in the up
position, it probably means there is something wrong with the interrupt enable circuitry
in the LTC itself.
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