[Simh] ^E as console escape [was Re: DZ issues on PDP10]

[Rich Alderson]

> From: Mark Pizzolato <Mark at infocomm.com>
> Date: Sat, 14 Apr 2018 13:01:41 -0700

> On Saturday, April 14, 2018 at 7:34 AM, Quentin North wrote:

>> There has been quite a bit of chat about the DZ handler recently, so I just
>> wanted to share an issue that I have found whilst using a DZ mux on pdp10.
>> When I have more than one terminal connected, intermittently i/o on one
>> terminal stop until there is i/o on another terminal (usually me pressing
>> return). I haven't identified any cause but if I experience it again is
>> there any diagnostics I can do to help pin it down?

> First, please use the latest github code.
> Second, if you see something like that, use CTRL-E and SHOW MUX to help
                                              ^^^^^^
> understand what's happening.  If you see a problem please create an issue
> at https://github.com/simh/simh/issues.

Just an aside here regarding the Bob's choice of ^E as the console escape
character.  Because this character is used as the start of privileged commands
in TOPS-20, as well as being an import part of the EMACS command set, I have
always (as in, for more than 15 years now) included the following line in any
PDP-10 initialization script, to change the console escape for ^\ (the expected
character on the KS-10 and KL-10 front end processors):

	  d wru 034

I suggest that anyone experimenting with the PDP-10 make that same change.

                                                                Rich

Rich Alderson, Sr. Systems Engineer
Living Computers: Museum + Labs
2245 1st Avenue S
Seattle, WA 98134

http://www.LivingComputers.org/