I was playing around with making an inferior clone of KRUSADER for the MC6800.
This was my first foray into writing an assembler and first attempt at writing a significant program in M6800 assembly, so the result is far from ideal and there are some things I would like to redo, but it is at least able to assemble itself. Compared to KRUSADER, it is far less full-featured.
I'm presently not expecting to spend a lot of time on this going forward, so I've published what I have here:
https://github.com/tmcintos/asm68
Tim