TRACE Use the TRACE command to trace spec1r1ea macn1ne activity and to record the at the terminal, on a virtual spooled printer, or on
both and printer. If you issue more than one TRACE command, t}1e operands 3.re cumulative; that is, operands specified for the first
time activated, whereas those specified with new modifiers are
updated. TheRUN and NORUN operands, however, can be specified in
different TRACE commands for different tracing functions and do not
cause3. The format of the TRACE command is:
r------------I 1 r ,
\, TRace SVC 1
1 PRINterI I I/O I r , r , , , PROqram , ITERMi.ngll I NO!!!!!! I , , EXTernal , IBOTH I I RUN , I I PRIV I L .J L J I , SIO I I I ccw I OFf , , BRanch
L .J, INSTruct I I CSW I I END I I than one of these activities may be traced by using a single I TRACE :;ommand. For example: , , TRACE SVC SIO PRINTER
LSVC traces virtual machine SVC interrupts. I/O tra::es virtual machine I/O interrupts. PROGRAM traces virtual machine program interrupts. EXTERN ;\L virtual machine external interrupts. PRIV traces all virtual machine non-I/O privileged instructions. SIO tra::es TIO, eLFIO, HIO, HDV, and TCH instructions to all devices. Also traces SIO and SIOF instructions for
nonconsole and nonspool devices only.
ccw traces virtual and realCCWs for nonspool nonconsole device 110 operations. When CCW tracing is requested, SIO and TIO instructions to all devices are also traced. tra::es virtual machine interrupts, PSi instructions, and
successful branches.INSTRUCT tr3.ces all instructions, virtual machine interrupts, and
successful branches.
section 5. Format ofCP Commands 161
both
time
updated. The
different TRACE commands for different tracing functions and do not
cause
r------------
\
1 PRINter
L .J
L
nonconsole and nonspool devices only.
ccw traces virtual and real
successful branches.
successful branches.
section 5. Format of