Method of Operation
This section describes Interactive problem
Control System (IPCSj. Diagrams describe the five IPCS functions. Figure 2-1 shows
the relationship of these diagrams. Diagram 2-1 shows how the DUMPSCAN command and its subcommands enable the user
to interactively examine a CMS dump file
created by VM/370. Diagram 2-2 shows how updates the status of
symptom summary file.
the PRE problems command in the Diagram 2-3 shows how the PROB command
creates problem reports and adds
information to existing problem reports.
Diagram 2-4 shows how the
lists the current status
problem.
STAT command
of a given
Diagram 2-5 shows an overview of how the VMFDUMP command creates a problem report by
extracting pertinent data from a VM/370 CP abend dump.
Diagram 2-6 shows how the nucleus load
map is compressed.
Diagram 2-7 shows how a program check is
handled.
Diagram 2-8 shows how
handled .. a ceded abend is
Diagram 2-9 shows how
initiated dump is handled.
an operator Diagram 2-10 shows how the preliminary
information is printed. Diagram 2-11 shows how the
blocks are formatted and printed.
contrel
Diagram 2-12 shows how the storage
protection keys and dump file are printed. Chapter 2* IPCS--The Interactive prcblem centrel System 19

IPCS I I I DUMPSCAN PRB VMFDUMP PROB STAT Diagram 2-1 Diagram 2-2 Diagram 2-5 Diagram 2-3 Diagram 2-4 I I I I Compress Program Check Coded Abend Operator
Nucleus Routine Routine Initiated Routine
Load Map (DMMPRG) ((DMMCPA) (DMMINI) Diagram 2-6 Diagram 2-7 Diagram 2-8 Diagram 2-9 I I Print Preliminary Format and Print
Print Storage Information Control Blocks (DMMEDM) (DMMEDM)
(DMMEDM)
Diagram 2-10 Diagram 2-11 Diagram 2-12
Figure 2-1. Key to Interactive Proble. Control System !ethod of Operation Diagram 20 IBM VM/370 Service Routines Program Logic