crazyc: is there a tutorial somewhere for getting the vt240 going connected to simh or a physical serial port via usb-serial adapter? I've recently got a lot of interest from the vintage computing community about this.
Quick and dirty how-to:
- get MAME 0.177.
- build SIMH from git HEAD -- they haven't released anything since 2012.
- delete MAME's vt240.cfg, if any.
- start vt240 emulation in MAME and enter VT240's setup menu (Pause/Break key on PC keyboards). pdf/dec/terminal/vt240/EK-VT240-UG-003_VT240_Series_Owners_Manual_Dec84.pdf on bitsavers should help.
- set serial port speed to 9600 (bitbanger's default), save to NVRAM and exit emulation.
- add "set console telnet=1201" (1201 can be any TCP port number above 1024) to SIMH's config file and start SIMH using that config. It will start listening on that port but won't start simulation until something connects to it.
- start vt240 emulation again, this time using bitbanger device to connect to SIMH -- something like "mess vt240 -bitb socket.localhost:1201". "-bitb socket." is magic; replace "localhost:1201" with actual hostname:port of listening SIMH instance.
and voil'a (junk at the bottom is cause by https://github.com/simh/simh/issues/330