I've been having adventures trying to get SIMH/TOPS 20 v4.1 running enough to get VTTREK running.
I found the vttrek.mac.1, and vttrek.3.1 files on bitsavers.org. One needs fortran to run, the other doesn't.
I'm wondering if you have a vttrek.exe available, or should I continue to slog my way through the Macro-10 / Load/Save thing?
If you don't have a vttrek.exe available, can I ask questions about loading this source code here, or should I post to alt.sys.pdp10?