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TableA-9(Cont}. MassStorageProcessor
Controls and Indicators
Push Button/Indicator
INT/EXT/CONT
STORE
Function
This three-way split-field indicator lights red in the individual field
when an error is detected. Pressing this button or executing the
microprogram's error option should reset the error and turn off the
indicator light. If the error persists, notify Honeywell Customer
Services.
EXT - Indicates an error detected during a device adapter interfa..:e or
main memory operation.
INT - Indicates an error detected internal to the processing structure
of the processor (internal buses, etc.)
STORE - Indicates an error detected during the access of a micro-
program from processor store.
OPERATOR INTERRUPT Pressing this button lights the indicator (white) and causes the execu-
tion of a special interrupt that transfers the information stored in the
ADDRESS/SIMULA TE switches to the central system. The
OPERATOR INTERRUPT state is reset by the microprogram and the
indicator goes out.
HALTED
This indicator lights blue when the control/processor goes into the
halted state.
INITIALIZE
Pressing this button lights the HALTED indicator and resets the
control/processor to the initialized state. The indicator lights white.
Address Simulate
These four thumbwheel switches, used in conjunction with the main-
tenance panel switches, permit the user to address various functions of
the control/processor, depending upon the specific application
required. These switches are used mainly by Customer Services in
conjunction with the maintenance panel
to
diagnose the control/
processor. Do not change the state of these switches while they are
being sensed by the microprogram.
AC BREAKER ON
Mass Storage Processors
The remaining indicators/push buttons are for the freestanding proc-
essors only ( seeFigureA -3).
This indicator lights red when the cabinet circuit breaker is on and
power is being applied to it from its power source panel.
Note: The cabinet circuit breaker is located behind the right
front door at the bottom right side of the cabinet on the CKP
panel. This circuit breaker applies primary service power to the
cabinet and protects it from overloads.
A-9
AT71-03
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