However, the Mac II port (which will be the next thing finished) will also do that and run all the same software and allow for a 640x480 color display – a much more useful development. There are enough differences in the 64K ROMs that they will not run some later software and vice-versa with the 128K ROMs. As far as emulators go, the specific hardware enabled by the various ROMs is moot. There are no SCSI ports, no expansion cards, no floppy disks, or any other hardware a specific ROM would take advantage of. The only advantage of a specific ROM is in the software emulation. Newer software is not likely to work with older ROMs and some older software will not run under newer ROMs. That means, depending on the software you want to run, having a ROM that is contemporary with it, or at least incorporates the code necessary to support features of the software.
