gtpn1m0cNon-SNA Data Communications Reference

Communications Control Program Trace

The communications control program trace package is intended for use as a test tool in the development and maintenance of the communications control program (CCP).

It is designed to provide a sequential record of the activities (CCP macros, SIOSCs, RIOSCs and multiplexor interrupts) of a single line or one or more groups of lines. This record may optionally be written to the RTL/RTA tape and post processed by STPP, or may take the form of a wrap-around in core record containing at any time the trace information on the last 42 activities traced.

The trace operation is initiated, modified, and terminated via commands. These commands are also written to the RTL/RTA tape and listed with the CCP trace by the diagnostic output formatter (DOF).