9 Nov
2006
9 Nov
'06
3:48 a.m.
Don wrote:
-----Original Message-----
From: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] On Behalf Of Don North
Sent: woensdag 8 november 2006 23:46
To: On-Topic and Off-Topic Posts
Subject: Re: PDP-11/44 problem - RUN stays on
Jay West wrote:
Yes, that is in the manual. I have the front panel switch on "LOCAL".
Am I correct that the messages "(Console V3.40C)", "(Program)", come
Henk wrote...
^P should toggle the console mode between talking to the
11/44 serial port (program) and the front panel microcontroller
(>>> prompt).
If ^P never comes back with a >>> prompt then as Jay said
something is funky with your MFM module. IIRC if you put the
front panel switch to the locked position if forces 'program'
mode and ^P is ignored, all characters go to the 11/44. I tried the suggestion from Don with the M9302 in
the last slot
of the 11/44 backplane. To my surprise, when you hit ^P, the
system prints a new "(Program)" line and the cursor (_) moves
to the next line.
So, now I am thinking ... a wrong/dead terminator on the
RL02 drive, can it have such an effect that through the RL11
controller the bus hangs?!
IF you changed the dipswitches on the UBI board as I
mentioned
in my > > previous email, AND you get the same response as above
(^P gives another (program) display)... then I bet your front
panel board (slot 1AB) or your MFM board is toasty. from a different source than the
">>>" prompt?
If the first 2 mesages also come from the MFM
module, then why can't
the prompt come from there? If all 3 messages come from the MFM,
I would say that the MFM is not toast ... Can some hardware problem
hold the ">>>", but let the initial two messages get out?
- Henk.
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