Control Console - GE 235 System Manual

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Mnemonic
Operand
Index
Time
Oper. Code
Address
Word
Microsec.
-
ROV
RUN
RIN
Description
6
RESET OVERFLOW HOLD. The overflow hold indi-
cator is turned off.
6
RESET UNDERFLOW HOLD.
The underflow hold
indicator is turned off.
6
RESET INDICATORS.
The underflow hold and over-
flow hold indicators a r e turned off.
Real Time Clock Instructions
Mnemonic
Operand
Index
Time
Oper. Code
Address
Word
Microsec.
-
Description
LAC
LCA
18
The contents of register A a r e replaced by the contents
of register C and the sign of registerA i s s e t to zero.
18
Bit positions 1 through 19 of register A a r e placed in
register C.
CONTROL CONSOLE
The GE-235 Control Console provides the operator with the controls and indicators necessary for
direct manual and visual communication with the Central Processor. Basic a l a r m conditions a r e
clearly displayed to facilitate accurate operator corrective action.
The detailed contents of
arithmetic, instruction and program counter registers a r e displayed.
Changes o r deletions of
instructions o r data can be made through convenient toggle switches.
Automatic and manual control modes allow complete operator control of programs. In the auto-
matic mode, the computer executes instructions in the normal sequential manner. In the manual
mode, the computer executes instructions in a step-by-step procedure, going from one instruction
to the next under operator control.
The lower third of the console consists of the Control Panel which contains operating switches that
control Central Processor power, operating mode selection, alarm and register resetting, initial
program loading, and starting and stopping of computer operation.
The upper two-thirds of the Control Console is occupied by the Indicator Panel and Register Control
Switches. The Indicator Panel consists of display lights f o r the contents of the A, N and I registers
and the P counter and f o r the location of the current selected index word group. Toggle switches
a r e provided to allow for the manual entry of information into the A register. In addition, various
alarm and ready status indicators that a r e essential f o r proper control a r e provided, a s well a s an
indicator showing the controller that i s actively accessed a t any given time. F o r Central Proc-
e s s o r s equipped with the optional AAU, additional AAU switches and indicators appear above the
standard indicator panel.

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