CXVTBB0

VTB is an IOMODX that exercises up to four VT20s (DH11 lines). It is intended to be a data handling routine used in conjunction with test 21 of MAINDEC-11-DBVTA (previously loaded and running in the VT20s PDP11-05. Data is entered at each selected tube and set into the continuous transmit mode. This data is then received and retransmitted by the VT20 host computer (this DEC/X11 module). All lines selected for test can be activated and run concurrently. All transmit and receive errors are reported on the console TTY. Ano data errors are reported by this module.