Using the System Control Monitor
B-3
014–002091
•
If your operating system or stand-alone program is hung (seems frozen and you
cannot continue operation), resetting the hardware may enable you to restart.
CAUTION: Always try to shut down your operating system properly before
attempting to reset the computer. Resetting the hardware while your
operating system or other software is running may result in lost or
corrupted data.
You can reset your system by pressing the hardware reset switch on the computer
unit (a
warm
reset), or by turning power off and then on again (a
cold
reset). You
see the SCM prompt after a warm reset; the computer completes powerup testing
and its automatic boot sequence after a cold reset. Refer to Chapter 3 for more
information about the reset switch.
•
Your system software handles all exceptions (program breakpoints and interrupts);
it halts if it encounters an exception it does not expect or cannot handle. For
information about program breakpoints and interrupts, refer to
AViiON
4600
Systems and AViiON
530 Workstations: Programming System Controland I/O
Registers
.
Using SCM Commands
This section describes SCM command interpreter conventions, explains how to execute
commands, lists all SCM commands with their functions, and provides reference pages
for the commands you are most likely to use.
An SCM command line consists of one valid command and, in many cases, one or more
arguments (required or optional) that you enter at the SCM prompt. Follow these
guidelines when using SCM commands:
•
Type no more than 80 characters in one command line.
•
You do not have to type the entire command name; the SCM accepts the first letter
of a command as its minimal mnemonic.
•
SCM commands and arguments are
not
case-sensitive (with the exception of device
specification arguments to the
command, which
must
be lowercase).
If you use a command incorrectly, the SCM displays a brief error message and returns
the prompt so you can try again.
The SCM supports several keyboard control characters. Table B-1 describes keyboard
control sequences you can use to edit command lines, to interrupt and exit from
several SCM commands, and to restore default settings for configuration parameters.
Summary of Contents for AViiON 530 Series
Page 1: ...Customer Documentation P R O D U C T L I N E...
Page 2: ......
Page 6: ......
Page 14: ...Preface xii 014 002091...
Page 24: ...Contents xxii 014 002091...
Page 58: ...Setting Up Your Computer System 2 18 014 002091...
Page 84: ...Setting Up and Installing a SCSI Bus 4 16 014 002091...
Page 122: ...Expanding and Maintaining Your Computer System 6 18 014 002091...
Page 148: ...Adding or Replacing Memory Modules 8 8 014 002091...
Page 182: ...Replacing the System Board 10 12 014 002091...
Page 188: ...Replacing the Fan Assembly 11 6 014 002091...
Page 236: ...Using the System Control Monitor B 22 014 002091...
Page 248: ...Solving Power Up Problems C 12 014 002091...
Page 260: ...Index 12 014 002091...
Page 262: ......
Page 266: ...Appendix Title 093 xxxxxx 2 Licensed Material Property of Data General Corporation...
