that's awesome. Your work makes me wonder why arcade conversions were so lame at the time (except for a few ones), when people were actually PAID to do the stuff
Well, sometimes they were provided with the arcade cabinet in free play and "figure the rest out"... Now there's MAME. Makes a difference in the gfx section. The gfx rip from ROM still needs work though. For having tried on a few games, it's far from obvious, even in amiga games.
Are you sure you want to use native development tools for your games? Since I migrated to VASM for whdload slaves, JST & CD32load, asm development became way easier. The only drawback is that you have to switch between winuae and notepad++ (but you can add a hotkey to notepad++ to run a makefile to call vasm)