22 Jun
2006
22 Jun
'06
12:25 a.m.
I get the following prompt:
XXXXXX XXXXXX XXXXXX XXXXXX (where XXXXXX is the register values)
$
It's just that I can't respond to it. "L" for example is not echoed on
the
terminal when I press a key.
I'm going to try Don's tests tonight.
-----Original Message-----
From: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] On Behalf Of Bill Pechter
Sent: Wednesday, June 21, 2006 5:47 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Serial console problems on 11/34
I thought the DL11-W had no modem controll... will have to
take a look at my DEC maintenance stuff in the basement.
I didn't realize you had a real VT220 in there... OK.
Just for grins -- did you try 7-NONE and 7 Even, Mark or
Space parity... or did you check the board setup for the
parity and speed.
Most sites didn't run 8-None-1 back then...
Many consoles were set down in the 1200 baud range as well --
since 9600 was just about the speed limit of a VT100/220.
Do you get any prompt?
Been a long time since my Field Service days. Gonna try to
find my 11/34 pocket card and dl11 jumper/switch info.
Haven't done an 11/34a since 1986 or so.
Bill
On 6/21/06, Julian Wolfe <fireflyst at earthlink.net> wrote:
It's null modem RS232. The wiring of the 25 pin connector
is the same
as BC05C (I copied it verbatim from the DL11-W
manual).
I have it hooked to an actual DEC VT220.
Also, I can't figure out what you mean by no dtr/dsr and
rts/cts. The
DL11-W has those signals.
The settings on the VT220 are 9600, Receive=Transmit, 8
data bits, no
parity, 1 stop bit.
I've also tried this with *just* ground, send and receive lines
(crossed
over) - same result.
Those settings are reflected on the DL11-W.
No clue what to do at this point.
> -----Original Message-----
> From: cctalk-bounces at classiccmp.org
> [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Bill Pechter
> Sent: Wednesday, June 21, 2006 1:24 PM
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: Serial console problems on 11/34
>
> What's your terminal and cable look like.
> It should be null-modem rs232.
>
> The DEC 11/34 uses Xon/Xoff flow control -- not dtr/dsr
or cts/rts
> so those need to be looped back on the pc if
you're using
one as a
> vt100.
>
> Transmit should go to receive and receive to transmit. A
straight
through
cable won't do it.
Bill
On 6/21/06, Julian Wolfe <fireflyst at earthlink.net> wrote:
I have, what I now know for a fact is the correct lines set
up on the
serial console on my 11/34. the correct signals
are coming out
according to my tester box. However, I cannot respond to
the prompt.
I started with the diagnostic on the front panel, which
says if I hit
CLR
173024 LAD EXA I should get 173000. I don't. I get 127777.
According to the manual there is something wrong with the
M9301 or the
switches are set wrong, and all the switches are
ON. Do
you guys know
of anything else that could be the case? I do
get
different results
whether or not I hook up the faston tabs going to
the front
panel or
not - I get 177777 if I don't hook them up at
address 173024.
Any help would be much appreciated, as always.
Julian