Seagate ST118273WC Uživatelská příručka stáhnout pdf (Strana 78)

Attaching Devices to the Asynchronous Serial Interface

7-6 Peripherals Configuration (R1001H) HP-UX version 11.00.01

■ 4800 baud

■ 9600 baud

■ 19200 baud

■ 38400 baud (not available for Continuum Series 600 and 1200 systems)

The stop bits supported are 1.5 bits and 2 bits. Supported data bits are 5 bits, 6 bits,

7 bits, and 8 bits. Parity options of even, odd, and no parity are available.

Hardware and software flow control is recommended for baud rates above 19200

baud.

Configuring an Asynchronous Terminal

Additional serial terminals might require setting configuration modes. The

following procedure describes how to configure an asynchronous terminal.

1. Add a getty entry for each new terminal (which does not have an existing

entry) to the /etc/inittab file. You can do this either with SAM or

manually. Entries must conform to the pattern

id:run_state:action:process, as documented on the inittab(4) man

page. The following are two sample entries:

ttp3:2:respawn:/usr/sbin/getty -h -t 60 tty0p3 {{9600}}

2 specifies a run state of 2 (multiuser), respawn specifies that init

should restart the process if it is exited, and /usr/sbin/getty specifies

the process that sets up serial terminal and modem ports and provides the

initial login prompt.

The -h option ensures that the getty will not hang up the line before

setting the port speed, the -t 60 option is a security option that requires

the user login name and password to be typed within 60 seconds, and the

tty0p3 identifies the port in /dev to which the getty processes attach.

The {{9600}} does not represent the baud rate. It is a pointer into the

/etc/gettydefs file, telling the system side what entry to use. See the

gettydefs(4) man page.

tty1:2:respawn:/usr/sbin/getty -h tty0p3 H

In this case, tty0p3 identifies the port, and H specifies the gettydefs

entry for port setup. H sets up the port for 9600 baud, eight data bits, no

parity, and one stop bit, the standard setup for most terminals.

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 84 85 86

Žádné komentáře

Seagate ST118273WC Uživatelská příručka Strana 78