[Simh] MAME and simh

[Peter Allan]

Hi folks,

I am trying to get MAME to talk to simh in order to use MAME as a VT
terminal emulator. However, I am failing to get the two to talk to each
other. I have been using simh for over 10 years, but I only picked up MAME
two days ago.

I have tried MAME v 0.222 on Windows 10 and MAME v 0.208 on Debian 10.1.
Both start up successfully, but I have trouble using them. I also have a
set of 13 ROMs for several VT terminals.

I have found some helpful information on the web, specifically

https://zork.net/~st/jottings/Real-VT102-emulation-with-MAME.html

and

 https://wiki.mamedev.org/index.php/MAME_and_SIMH

The latter page looks like it should be just what I am looking for, but it
describes using a VT240 ROM. My vt240 ROM doesn't work. My vt220 ROM does
work, but when I follow the instructions to 'press F3 to enter setup',
nothing happens.

I have also got the impression that some of the command line options for
mame have changed over time, so some older information on the web may no
longer be accurate.

So, has anyone got this combination to work? If so, can they send me exact
instructions on how to do it please. I hope that I am simply failing to do
something that will become obvious with hindsight.

My normal Linux system is CentOS 6, CentOS 7 or Fedora 31, but I also have
Debian 10.1 available.

I run several simulated VAX and PDP-11 instances using simh.

Cheers

Peter Allan
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