The ??TRACE (Trace Table) command clears the trace table or specifies that a system dump is to be performed each time the trace table is filled.

The ??TRACE command is available only if the MCP was compiled with the TRACE compile-time option set.

For additional information, refer to  the ??CD (Conditional Dump) primitive command.

Syntax

Explanation

??TRACE

Displays the current trace setting.

DPFULL

Causes the system to generate a memory dump after the last entry has been placed in the trace table. If this option is set, a series of memory dumps is taken, one each time the table is full. If it is reset, the dumps are not taken. In either case, when the table becomes full, the pointer for the next entry is reset to the beginning of the table, and trace table entries continue to be made.

This option is set by the plus sign (+) or reset by the minus sign (–).

CLEAR

Causes the next CONDITIONALDUMP stop that has the TRACE function armed to fill all trace table entries with zeros, sets the pointer for the next entry to the beginning of the table, and resets the CLEAR option.

This option is set by the plus sign (+) or reset by the minus sign (–).