DEQ (Dequeue Resource) Macro

If other tasks are enqueued on the same RCB, the DEQ macro frees from their wait state all other tasks that were waiting for that resource. A task that attempts to dequeue a resource that was not enqueued or that was enqueued by another task is abnormally terminated. Dequeuing under these two conditions within an abnormal termination routine results in a null operation instruction.

The DEQ macro supports the 31 bit environment. DEQ can be issued in 24-bit or 31-bit addressing mode, above or below the 16 MB line.

When DEQ is issued in AMODE 24, the RCB address is treated as a 24-bit address. When DEQ is issued in AMODE 31, the RCB address is treated as a 31-bit address.