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SEL CHNL:
This lamp is lighted whenever
either selector channel is using the
Read-Only Storage.
CO~P ~ODE:
Whenever the system is proc-
essing a 1400 type program, the comp
~ode
lamp is turned on.
This lamp is
turned on at the same time as the W3
lamp.
CPU CHECKS
•
•
•
Errors detected during CPU operation
set a check latch.
Each check latch turns on a corres-
ponding indicator.
These indicators are:
STOR ADDR
STOR DATA
B REG
A REG
ALU
ROS ADDR
ROS SALS
CTRLREG
Except for the ALU check, the turning on
of any of these lamps is an indication
of detected parity error in the asso-
ciated register.
In the ALU, a dupli-
cate check is made.
COMPARE ADDRESS
MAIN STORAGE ADDRESS
DC]
I
I
,
,
3
, I
Figure 6-4.
Operator Panel
OPERATOR PANEL (FIGURE 6-4)
SYS
(SYSTE.~)
INDICATOR
•
•
This indicator is on whenever the
customer or CE usage meter is
recording time.
The System Indicator is located on
logic page PA 061.
~N
(MANUAL) INDICATOR
•
The Manual Indicator is on whenever
the CPU clock is stopped.
•
When on, this light indicates that
manual controls requiring a stopped
clock may be performed.
•
The Manual Indicator is located on
logic page PA 061.
WAIT INDICATOR
•
The Wait Indicator turns on when the
CPU is in the wait state.
•
An interrupt causes a ROS branch-out
of the wait state.
•
The Wait Indicator is located on
logic page KU 011.
I
POWER
I
ON
I
POWER
I
OFF
INSTRUCTION ADDRESS - ROS ADDRESS
00000
EJ
6-9
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