> > Not having played around much with the slot concept does that allow running > machines > > on separate host computers and linking them together like djb_rh is hoping for? > > One of the RS232 slot options is the "bitbanger", which redirects communication to a > TCP socket. Continuing beyond that is pretty easy on Linux/Mac ('screen' will work to > link together the MAME instances at that point) and quite difficult on Windows.
I'm not familiar with this, either. What about doing the above with one MAME machine and one *real* piece of hardware and using actual RS232 to link them?