I was afraid 'dbi' would clash with a binary on my machine (related to DBI), but it's fine.

BTW, on Basic, I had MISSION.BAS for MBASIC.COM under CP/M.

https://termbin.com/w7oe

Is there any public Basic to run it? I tried bas, blassic, bwbasic, yours, and I had no luck.

Sorry, but I'm not sure which dialect of BASIC this is - wish I could be more helpful here. TinyBASIC is a very minimal implementation (no arrays, functions, nor loops) so it definitely won't be able to run this program.

This:

https://en.m.wikipedia.org/wiki/MBASIC