> Offhand I'd make a guess they could be extra serial ports for (perhaps) >modems. I always wondered how Apple// BBSs were able to run more than a >couple of lines. > > Later > Mike Back in the early 80's I helped run a "chat" BBS that consisted of 2 Apple //e's and 12 Hayes Micromodem //e modems. A single computer could run 6 or 7 modem cards. That's how we did it back then.... Raymond