>Can the IMP software and the H316 simulator talk TCP/IP to an ehernet card?
Well, the IMP software talks to one or more IMPs via a modem and an AT&T leased line. That's what IMPs do. Simh emulates the modem using a TCP connection. As others have pointed out, the original ARPANet didn't use TCP/IP at all. That was added to later versions of the IMP software. If you can find one of those versions, then it should work on simh. Bob _______________________________________________ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh