If you're looking for a disk based disassembler, that can produce output for both AMAC and Mac/65, then give ASI a try! ASI was written by Andrew MCINTOSH.
Here are two versions of ASI 1.5AM for download. The first is a zipped DCM file, unzip it and then use Disk Communicator to extract it. The second is a zipped XFD file, for those wanting to use it on an emulator.