Can you elaborate? What were the issues with ROM03? Game not starting, freezing ? Do you know which version of the game?
I have tested Dungeon Master version 2.0 and 2.1 (both English, available for download here: http://dmweb.free.fr/?q=node/626) in the GSport Apple IIGS emulator with both ROM01 and ROM03, and both games run fine with both ROMs. However I've never played the game on a real Apple IIGS. Maybe the emulator behaves differently than the original hardware?
There are very few differences between 2.0 and 2.1 (based on my ReDMCSB source code):
- Obviously, the version number itself, as shown in dialog boxes and also used in the version sensor (not used anywhere in the original dungeon)
- Minor changes (looks like small optimizations in 2.1) in 3 graphic related assembly routines
- Version 2.0 reads mouse position directly in memory / 2.1 calls OS function ReadMouse
- Amount of memory not allocated by the game (left to the system) reduced to 16K in version 2.1 instead of 64K in version 2.0