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8163A/B, 8164A/B & 8166A/B Mainframes Programming Guide
1
Introduction to Programming
The Error Queue
The error queue is 30 errors long. It is a FIFO queue (first-in first-out). That
is, the first error read is the oldest error to have occurred. For example:
1 If no error has occurred, the error queue contains:
+ 0, "N
o error"
2 After a command such as
wav:pow
, the error queue now contains:
+ 0, "N
o error"
-113, "Undefined header"
3 If the command is immediately repeated, the error queue now
contains:
+ 0, "N
o error"
-113, "Undefined header"
-113, "Undefined header"
If more than 29 errors are put into the queue, the message:
-350, "Queue overflow"
is placed as the last message in the queue.
