Table of Contents
Advertisement
1.14.0 OPERATION RETRY AND
ERROR LOGGING
If errors occur during some operations, the oper-
ation is retried. The following operations are
retried at the system instruction level:
1.
2.
Operations that cause errors while the emu-
lator is analyzing system instructions.
Some operations that cause errors during
the execution of the system instructions.
Error logging is used by the system to help the CE
analyze intermittent errors. All errors that retrY
the operations are recorded on the disk and,
where possible, errors that stop the processor are
also recorded. Errors that are recorded can be
retrieved and printed by using the E RAP (error
recording and analysis procedure) program that
resides on the CE diskette.
Essentially, two types of error information are
recorded for each device and the processing
unit-error history and error count. In addition
to the error information, the number of I/O
operations performed by each device is also
recorded.
Each device, except the display screen, has an
error history table in which to record data about
each error. If the table becomes full, the most
recent entries are retained as shown in the
ill ustrati on.
Error count tables contain the number of times
a specific error occurs. When these tables reach
their maximum value, this value is retained until
cleared by the CEo
Details of the error history and error count tables
are in the Diagnostic Service Guide
(MAP section
3000).
1-14
Error History Table
~o-r-----'L.-
Most Recent
. . _ _
~
Error
Error
,..---1
Error
.,---1
Error
I------'.'----~
Error
1----,.'-----1
Error
'----.'------'
Error
Advertisement
Table of Contents
