Thanks for the pointers, I will try them out with a newer build of MESS. The main reason I want to get MESS running is to assist with ROM hacking since it emulates the hardware more closely than Basilisk or mini vMac. Dougg3 uses it and seems to get some good correlation to real hardware, maybe not all the time, however he uses a slightly modified version he compiles in order to get the emulator to read larger ROMs than it is typically configured for.