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

50
Port Naming and Numbering
HP-UX Port Assignments
Therefore, when direct connect port types are used, the first port on the
first port module (or fan out cable) of the first mux card is
/dev/tty1a1.
The
second port on the first port module (or fan out cable) of the first mux
card is
/dev/tty1a2.
The first port on the second port module of the first
mux card is
/dev/tty1b1
. And, the 16th port on the fourth port module of
the fourth mux card is
/dev/tty4d16,
etc.
Figures 5-1 through 5-2 list the first port module (or fan out cable) of
mux card one (1) and the last module of mux card one (1).