[Simh] Simulating a GT40

[Lars Brinkhoff]

Timothe Litt wrote:
> In real life, the GT40 was used as a(n expensive) graphics terminal
> (~$10-15K IIRC), most often for the -10. CAD systems, such as SUDS and
> (e.g. circuit) simulations used it.

These are some interesting GT40 applications in ITS that I'd like to
run:

- SUDS: mentioned above.
- URUG: debugger in 1000 (octal) words.
- Lisp display slave: graphics for Lisp applications.
- Lisp Logo with turtle graphics.
- Datapoint terminal emulator.
- Console for the CONS Lisp machine.