wsincc@eutrc3.urc.tue.nl (Wim van Dorst) (09/05/89)
Hello World, At this moment I am typing this via /dev/tty2 from my Minix system at a remote host, ergo the ttydriver works great. Next to me there is a HP2392A terminal asking to be hooked on this computer (An 8088 PC clone with Minix 1.4a), but ... I can connect the terminal to a modem, works fine I can connect the modem to /dev/tty1, works fine I can connect the terminal to /dev/tty1, nothing I did: change NR_RS_LINE in minix/kernel/tty.h to 2 added the line "1c1" to /etc/ttys (and reboot) set terminal to 1200 baud 8 bits no parity no handshaking stty 1200 8 -even -odd < /dev/tty1 twiddle with as much settings as possible all to no avail Which important part am I missing here? Has anyone done such a thing before, hook up a terminal especially a HP2392A? Which settings a best (implying which work). I would be most thankful for any reponse, either via the net or by e-mail. Wim van Dorst, wsincc@tuews1.win.tue.nl
hundt@occlusal.rutgers.edu (Thomas M. Hundt) (09/12/89)
Wim van Dorst: |I can connect the terminal to a modem, works fine |I can connect the modem to /dev/tty1, works fine |I can connect the terminal to /dev/tty1, nothing You need a null modem between terminal and PC. Reason is (basically) that wires 2 and 3 in the RS-232 cable need to be switched (one is Transmit Data, one is Receive Data). The terminal and PC both are wired similarly and thus conflict. Note that this is a simplified description; there are also handshaking lines that need to be taken care of. -Tom Hundt