hello,
since PN is my favorite editor and I recenty did some coding for my favorite machine, the amiga, I made a schemedef file for 68k assembler. Its based upon the PowerShell schemedef, which helped alot.
Currently it has all 68000 mnemnonics (I left out the immediate or address versions of the commands) and most of the phxass commmands. Extending should be straightforward if anyone wants to have e.g. 68020 or 68030 mnemnonics.
You can download the schemedef file here : http://www.hypnotix.de/downloads/asm68k.schemedef
If I just could figure out how to implement labels into the definition.