How To Use The Consoles - Data General NOVA 4/S Manual

Data General Corporation (DGC) has prepared this manual for use by DGC personnel and customers as a guide to the proper installation, operation, and
maintenance of DGC equipment and software. The drawings and specifications contained herein are the property of DGC and shall neither be reproduced in whole or
in part without DGC's prior written approval nor be implied to grant any license to make, use, or sell equipment manufactured in accordance herewith.
CHAPTER 2
HOW TO USE THE CONSOLES
The NOVA 4 computers contain two consoles: a front
console and a virtual console. These are described
below.
FRONT CONSOLE
The front console is located on the upper-left corner of
the front panel. It consists of three switches and three
lights, defined below.
Switches
POWER - Powers up and powers down the system.
PL/LOAD-RESET - When this switch is pushed to the
PL/LOAD position, the CPU performs a program load
from the device whose device code is jumpered on the
CPU board. (For jumpering information, see Installation
Data Sheets or Part III, Chapter 14, "CPU Board
Replacement".)
When this switch is pushed to the RESET position, the
CPU performs a system reset and enters virtual console
mode, described below.
LOCK - When this switch is in the LOCK position,
the other two switches, described above, are disabled.
Additionally, the LOCK switch enables auto restart
after a power fail when the battery backup is present,
while inhibiting access to the virtual console via a
Break character transmitted by the system terminal.
On a 16-slot system, if this switch is in the LOCK
position, the system cannot be powered down (i.e., the
power switch is disabled). On a 5-slot system, if this
Switch is in the LOCK position and the power switch is
placed in the OFF position, the system will go into
battery backup mode if that option is present. If the
d-slot system does not contain the battery backup
option, the system will be powered down.
PWR - When illuminated, it indicates that the system
is powered up and the voltages are within operating
specifications.
BATT - When illuminated, it indicates that the system
is running on battery-backup power. This is usually the
result of a power failure.
RUN - When illuminated, it indicates that the system
is in run mode. This light is out when the system is in
virtual console mode.
PWR BATT RUN
CO oO ®
(COCK PL/LOAD)
DG-06062
Figure 2.1 FRONT CONSOLE