Today by, way of your screenshot, I discover Asm-Pro. Just got into Amiga recently (by way of receiving one from my uncle's closet..) and have been meaning to backfill my shameful lack of 68k asm knowledge. Thanks!
Good luck! As the sibling comment mentions, Asm-Pro is IMO a good choice these though it requires KSv2+ (so you can't use it on an stock A500). I mostly use vasm for "larger" stuff though (http://sun.hasenbraten.de/vasm/) and cross-compile (though it can run on Amiga as well) / test in an emulator.
For a quick test/code loop nothing beats the Asm-* family - remember to save often and make backups though :)
mras0|1 year ago
For a quick test/code loop nothing beats the Asm-* family - remember to save often and make backups though :)
snvzz|1 year ago
Another modern/maintained one, focusing on low end 68000/68010 machines, is asmtwo.
AsmOne was a very popular assembler at the time, and has seen a few derivatives. I remember an old one called trash'm'one.