Hercules V4.00.0 - User Reference Guide

8.123 PTT (Display or set internal trace)

8.123.1 Function

The PTT command sets or displays the internal trace options. When specified with no operands, the PTT
command displays the trace options and the contents of the internal trace table.

When specified with operands, the PTT command sets the trace options and/or specifies which events
are to be traced. If the last operand is numeric, it sets the size of the trace table and activates the trace.

The following events can be traced:

control trace error trace interlock failure trace i/o trace lock trace buffer logger trace program interrupt trace sie trace signaling trace thread trace timer trace timestamp trace entries

8.123.2 Syntax

Descriptive

PTT [

[ [

[ LOCK] [

WRAPnnn] [
mmmmm]

Diagram

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nnn

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mmmmm

8.123.3 Parameter

NOxxxxxxxx

Deselects the specified trace entry type or deselects the specified option.

ERROR

Selects the error trace entries.

CONTROL

Selects the control trace entries.

PROG

Selects the program interrupt trace entries.

INTER

Selects the interlock failure trace entries.

SIE

Selects the SIE trace entries.

SIGNAL

Selects the signalling trace entries.

Select the I/O trace entries.

TIMER

Selects the timer trace entries.

THREADS

Selects the thread trace entries.

LOCK

Selects the lock trace buffer entries.

TOD

Selects the timestamp trace entries.

LOGGER

Selects the logger trace entries.

WRAP

Specifies that the trace table has be overwritten when it is full. As soon as the end
of the table is reached, the next entry to be written to the table goes to the start and
overlays the trace entry that was formerly there.