Technical data

Managing Peripheral Devices
8.5 Automatically Configuring Devices for OpenVMS Alpha Systems
The following keywords do not have equivalents in ISA_CONFIG.DAT:
-enadev a_number Takes the numbers 0 (disabled) and 1 (enabled). It allows
you to disable a device so that it will not be used in resource
allocation calculations.
-etyp a_number Defines an entry type for this entry. OpenVMS supports only
the values 0 and 1. It should always be specified as a 1. It
takes the following values:
0 Causes the entry to be deleted
1 Single option
2 Embedded multiport device
3 Multiport option device
8.6 Managing Terminals
To manage terminals, perform the following tasks:
• Physically attach terminals to the system
• Set terminal characteristics
• Set up virtual terminals
The following sections explain setting terminal characteristics and setting up
virtual terminals.
8.6.1 Setting Terminal Characteristics
Terminal device characteristics—for example, the number of characters displayed
on a line—have certain default values. Changing these values might be necessary,
depending on the characteristics you use with each terminal.
To change the terminal device characteristics, use a SET TERMINAL command
with the appropriate qualifiers in the following format:
SET TERMINAL[/qualifier,...] [device-name[:]]
For example, the following command indicates that the width of terminal lines is
132 characters and that the size of each page is 60 lines. The /NOBROADCAST
qualifier disables the reception of broadcast messages. The /PERMANENT
qualifier allows you to keep terminal characteristics between terminal sessions.
(You must reset characteristics each time the system reboots by adding these
commands to a site-specific startup command procedure.)
$ SET TERMINAL/WIDTH=132/PAGE=60/NOBROADCAST/PERMANENT
For more detailed information about the SET TERMINAL command and its
qualifiers, refer to the OpenVMS DCL Dictionary.
8.6.1.1 Setting Default Characteristics with System Parameters
To change the default terminal characteristics for all terminals on a node, you can
specify values for the system parameters TTY_DEFCHAR and TTY_DEFCHAR2.
For more information about these parameters, refer to the OpenVMS System
Management Utilities Reference Manual. For more information about setting
system parameters, see Section 15.5.
Managing Peripheral Devices 8–21