Welcome to the forum David.
What did you end up using on this machine? I just picked one up & was thinking openbuild electronics would work fine but folks @ my local Makerspace who know much more than me recommended Acorn & then I found Masso controllers & software.HI Everyone.
I have been a custom woodworker for over 40 years, I also just purchased a G D200. from an ASU auction site. I also am looking for software but do not want to work through Gerber. Any comments on OS, software, that is compatible and not going to break me? I have a tower with the correct 9 pin serial, matching the supplied data cord, (about 40 feet long). This the cable form COMM 1 to the computer. I am waiting to load OS, until I learn more. Thanks