Determining The Console Device; Entering Console Mode - Digital Equipment VAXstation 3100 Maintenance Manual

2
Testing
Table 1-1 Prompts
Prompt
>>>
$
%
Mode
of
operation
Console mode. Console commands are listed in Appendix B.
Program mode (VMS operating system)
Program mode (Ultrix operating system)
1.1.1 Determining the Console Device
The console device is the keyboard (LK.201) and the monitor (VR150/VR260
monochrome or VR160/VR290 color) connected to the video
port.
The
keyboard inputs commands at
4800
baud and the monitor displays output
from the video circuits (base video or 8-plane graphics module).
An alternate console can be used on the model 40 system . A terminal (VTlOO
series and VT220 series) can be connected to the
printer~rt.
The
!§fil
on the
back of the system box must be in the up position.
The
~
must be in the up
position before the system is powered up or the monitor is still the contiole.
When the system is powered up, the terminal is the console. The terminal
must be set
at
9600 baud, with 8 bits, and no parity. Model 30 does not allow
access to the
I@
since it is covered by the rear bezel (future model 30s may
aiiow access). However, iuodel 30 use5 ti'iis alternate console if ycu cpen the
system box and move the ~ on the system module to the up position.
1.1.2 Entering Console Mode
Console mode is entered any time the CPU halts. A halt means that control
bas passed from the operating system software to the console mode program
in
ROM. The CPU can be halted automatically or manually. When halted
automatically (boot failure, major system error, or after power-up testing),
the console mode program checks the nonvolatile RAM for user-defined
instructions (restart, boot, or halt). The system then executes the instructions.
The CPU is halted manually by pressing the halt button on the back of the
ystem box and the system enters console mode immediately.
To enter console mode, have the system manager shut down the operating
system software, then press the halt button.