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

Input From CMS Notes Module
1 Ask if the user needs help. If yes, show DMMDSC 'HELP' pages. Prompt for the dump
file number and mode. Check that the
dump exists. If not, issue message:
ERROR IN FSSTATE 2 Read subcommands from the terminal. DMMDSC Truncate the input to 8·byte words I and place in parameter list. If end of
session ('HX', 'QUIT', or 'END'),
return to CMS. 3 Scan the parameter list and check DMMDSC subcommand for validity. Pass control to the appropriate subroutine. • Convert 'hexloc' to hexadecimal DMMFEX
and call DMMGET to fetch the
dump data into storage. Check for
indirect request [%) . Call DMMDIR to format and display
the data. • Translate the address of 'hexloc' and DMMFED
the byte count nnnn to hexa· decimal.
Fetch the data into storage, from at
the data, convert to EBCDIC, add
addresses, and write the data to the
terminal. • Increase (decrease if 'U') the iast DMW,SCR displayed address by X'130', checking for an end of page condi· tion. Fetch that data into storage. I nvoke the format and display
routine (DMMDIR). Processing
Determine which dump is to be
examined.
2 Read subcommands. If end of session, return to CMS. 3 Check input for validity and call
su brouti nes. D
· I hexloc% t • ISP ay l hexloc I Display the dump data around
the address 'hexloc' . • Display hexloc nnnn
Display nnnn bytes of dump
data starting at 'hexloc' . • Scroll [U) ScrollU Display dump data adjacent
to the previous display.
Label Ref Notes
GETDUMP
ENTER STATERR READY TOKEN I INCHECK PLlSTSCN TRANADD NOROUND INDIR DIRECT DMMFED
TRANADD CTHAN DIRECT SCRNFULL DMMSCR DIRECTIT Output Step 2 I DMMDSC7191 DMMLOC7161 DMMDSC7201 U D Module Label I Ref I I Diagra. 2-1. DU!PSCAN IPCS Com.and (Part 1 of 3)
Chapter 2. IPCS--The Interactive Proble. Centrol syste. 21