gtpn1m0eNon-SNA Data Communications Reference

Functions

Activating CCP Trace

Activating CCP Trace involves:

Deactivating CCP Trace

Deactivating CCP trace involves:

As part of CCP Trace operation, all CCP Trace commands are written to the RTL/RTA tape for DOF processing.

Interception

If CCP trace is active, whenever the CCP is processing CCP macros, SIOs, HIOs or multiplexor interrupts, the operation is intercepted. Pertinent information about the operation is recorded in the appropriate CCP trace low core area (console or non-console), then the operation is allowed to complete.

Output

If the option to write the trace blocks to tape was selected, as each low core trace area becomes full, a 1055-byte user storage block is obtained. Also, the information is copied from the low core trace area to the user storage block, and the user storage block is written to the RTL/RTA tape. In addition, when CCP tape trace is deactivated, the last two partially full trace areas are copied to user storage and written to the RTL/RTA tape.

Restrictions