I've got a similar issue: I still have my own source code from a cool little DOS game from 1991 or so (running at 50 or 60 Hz, don't remember which: but in any

I've got a similar issue: I still have my own source code from a cool little DOS game from 1991 or so (running at 50 or 60 Hz, don't remember which: but in any case it was hard stuff for the times). It's a mix of C and some assembly but... I don't have the tooling anymore and, heck, have no memory whatsoever as to which compiler I was using back then. I still have some .exe and they run fine under DOSBox (for example). I don't know if my best bet is to start from another project that works/compiles/run and then port my old code to that or if I should first try to compile it again. I was "wise" enough to backup all my code and assets (gfx, music, sound fx) and executables, but foolish enough to not backup the tooling. I never thought that 30 years+ later I'd like to compile it again.