Hi Warner!

> > It currently starts and draws a screen for a brief second in the emulator before
> > crashing back to the prompt, so something is amiss.

Yesterday I was able to fix the crash. Is this the first time
Space Travel has been playable since 1969 or the 70s?

Lars Brinkhoff implemented the GRAPHIC-2 emulation for
SimH. By using the F1-F8 buttons on the emulated GRAPHIC-2
I can rotate and zoom the solar system map, but I don't yet
know how to play! :)

I don't have a youtube channel, but I did a screen recording:
http://sebras.se/space-travel-2.mp4

In case that doesn't work, here is a single screenshot:
http://sebras.se/space-travel-2.png

I have sent the changes needed to make Space Travel run as a pull
request to the pdp7-unix project, hoping for them to be merged.
https://github.com/DoctorWkt/pdp7-unix/pull/224
https://github.com/DoctorWkt/pdp7-unix/pull/225

   / Sebastian