Special Operation - DEC 4000 Model 200 Operation Manual

With breaks disabled, the system automatically boots system software
when powered on.
NOTE: You can use the console command SET CONTROLP to specify
the control character,
Using the console commands, SET HALT REBOOT and SET HALT
RESTART_REBOOT, you can set your system to override the Break
Enable/Disable switch and automatically boot software after an error
halt condition or power-up, even if breaks are enabled.
• The Power-Up Mode switch on the CPU cover panel is set to Run
(indicated by an arrow).
• The baud rate switch inside the CPU cover panel is set to 9600 (factory
setting).
• The Write-Protect button for each RF-series ISE is set to out (not lit).
This setting allows system software to write to the storage element.
• The Run/Ready button for each RF-series ISE is set to in (glows green
when the storage element is not being used). This setting makes the
storage element available for use (on-line).
• The Halt button on the SCP is set to out (not lit).
• For expanded systems using power bus cables to link the R400X or
B400X expander, the power switches on all expander power supplies
should remain on (set to 1) at all times. The system power supply
sends the power bus signal needed to turn the expanders on or off.

2.2.2 Special Operation

Certain operations require that you change some of the normal operating
settings.
• If you need the ability to halt the system from the console terminal, for
example, when installing system software or performing certain types
of backup, set the Break Enable/Disable switch to enable (up, dot inside
the circle). This allows you to halt the system by pressing
console terminal.
NOTE: You can use the console command SET CONTROLP to specify
the control character,
Using the console commands, SET HALT REBOOT and SET HALT
RESTART_REBOOT, you can set your system to override the Break
2–2 VAX 4000 Model 200 (BA430) Operation
, rather than
Ctrl/P Break
, rather than
Ctrl/P Break
, to initiate a break signal.
on the
Break
, to initiate a break signal.