> gives an error and then reboots after a couple of minutes. In mame I am guessing that > will be patched through/simulated unless there is a way for us to dump data out of > the dongle.
Konami dongle checks are traditionally pretty weak. It's possible on most of their late 90s and 2000s games to recreate the contents of the dongle entirely from the game itself (which is indeed how SMF got all the 573 stuff to run).