Hi Rednova,

If you'd like to start coding in 68k then I can highly recommend DevPac for the job, I've been using it since the mid 90s and have tried just about all the other assembler progs out there.
Devpac to me is the easiest to use, its not over cluttered with options you don't need and it's a clean & straight forward assembler package for coding in 68k.

The DevPac-Lite version that came on the Amiga Shopper Disk (Jan 1995), is fully working it just doesn't contain all the Include files & ready made macros that were on the full package. There was a full version given away once on an Amiga Format Disk, not sure but I think it was a special edition disk no 7 around 1996.
I don't know anywhere you can buy the full package these days, but If you really want the full package just google the net and you'll soon find it.

There are also plenty of sites out there where you can download free open source examples of programming in devpac, these are one of best and easiest ways to learn about programming in assembler.

Good luck & stick at it if you do decide to give it a go, you won't regret it I reckon.
