HP EISA/PCI Multiplexer Family Cabling, Diagnostics and Troubleshooting Manual

Port Naming and Numbering

HP-UX Port Assignments

For each port on the Mux Card(s), SAM is used to create different devices

(i.e. minor number references) for different purposes. For each EISA/PCI

Mux Card installed in your system, insf creates devices for all of the

ports connected to that mux card.

HP-UX Port Names

The following devices can be created:

Direct connect device.

Used for terminals, printers and other devices which do not support

or require modem control signals.

Modem control device.

Used for modems or other devices which use DTR/DCD (Data

Terminal Ready/Data Carrier Detect) modem control signals for

establishing connections.

Mux port names are of the general form

/dev/<port_type><instance><port module><port>

where:

<port_type> categories are:

tty = direct connect

ttyd = modem dial-in

cul = modem dial-out

cua = modem dial-out with automatic caller

NOTE The latter three examples are used with uucp dial-up protocol.

<instance> is an instance number which is assigned by HP-UX to the

mux card.

<port module> is a single lowercase letter from ‘a’ through ‘d’,

representing the first port module through the fourth port module.

<port> is a decimal number from 1 to 16.