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Creating Device Special Files

HP-UX version 11.00.01 Configuring Asynchronous Serial Interfaces 7-3

briefly describes how to create device special files from the command

line.

Determine the instance number of the interface card you are configuring. To check

instance numbers, enter

ioscan -f

Instance numbers are in the I column. Port numbers 0–7 are assigned to the

individual interfaces on each async card.

NOTE

Port numbers are numbered 0—7, but the numbers printed on the arms

of the octopus cable are 1—8. Subtract one from the cable number to

obtain the port number.

The device special files for the individual ports are created by using the mksf

utility. The minor number of the file denotes whether the port is connected to a

dial-in device, a dial-out device, or a direct connection.

For example, you can create a dial-in device special file for port 3 on card instance 1.

■ The following is a Continuum Series 400 sample command:

# mksf -d asyn -I 1 -p 3 -a2 -v

making ttyd1p3 c 130 0x010302

■ The following is a Continuum Series 600 and 1200 sample command:

# mksf -d ald -I 1 -p 3 -a2 -v

making ttyd1p3 c 234 0x010302

You can use the lssf command to decode the minor number used to identify the

device special file.

■ The following is a Continuum Series 400 sample command:

# lssf /dev/ttyd1p3

asyn card instance 1 port 3 callin HW flow control at

address 3/3/0 /dev/ttyd1p3

■ The following is a Continuum Series 600 and 1200 sample command:

# lssf /dev/ttyd1p3

ald card instance 1 port 3 callin HW flow control at

address 3/3/0 /dev/ttyd1p3

Each port can have one or more device special files associated with it. For more

information, including port naming conventions, see the mksf(1M) and insf(1M)

man pages.

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Seagate ST118273WC Guía de usuario Pagina 75