Method of Operation
The method of operation diagrams describe
the major functions of the DDR (DASD Dump Restore) program. The relationship of the method of operation diagrams is described
in Figure 5-1. Diagram 5-1 describes
functions of the DDR program. the major Diagram 5-2 shows the control statement
Frocessing for the DDR •• Diagram 5-3 describes the function.
Diagram 5-2 Diagram 5-3 DDR Program Control The Dump
Statement Function
Processing
Diagram 5-4
The Restore
Function
Diagram 5-1 Overview of the DDR
Program Diagram function.
5-4 cescribes the Restore Diagram 5-5 describes the copy function.
Diagram
function.
5-6 describes the Print Diagram 5-7 describes the Type function.
Diagram 5-5 Diagram 5-6 Diagram 5-7 The Copy The Print The TVpe
Function Function Function
Figure 5-1. Key to the DASD Dump Restore Program Method of Operation Diagrams 94 IBM VM/370 Service Routines Program Logic

Processing Initialize the DDR program.
2 If running standalone, print heading
and determine input device.
) 3 If running under VM/370, build
PLiST from passed parameters.
4 Read a control statement. (See
Diagram 5·2 for details.) If statement type not found, issue
error message and read another
statement. I 5 Perform specified function.
(See Diagrams 5-3, 5-4, 5-5, 5-6,
and 5-7 for details.)
6 At end, exit to CMS or enter wait
state.
Notes Module Label Ref Notes
DMKDDR701 E INVALID OPERAND xxxxxxxx
Module Label Ref
1 The DDR program is initialized and the DMKDDR DMKDDREP control returns to the CMS command
2
base registers (9,10,11,12, and 13)
are set up.
The heading " •• I",..,n nA I""\. nllAlln/nr TI"'\ V,VI/':>/V UMSU uv,v'rtncS,vRE PROGRAM RELEASE n
is displayed. If no input device is specified, the IPL device is used as the input device.
3 DMKDDR builds a PLiST if parameters
are passed from CMS to the DDR
program.
DMKDDR NEWADD I I I I DMKDDR I CMSl 4 DMKDDR reads the control statement. DMKDDR GTCARD The routine needed to initialize the
DDR function is found by branching
and linking to the SCANNAME routine
and searching the name table.
5 The designated function is performed. DM KDD R
At its end, control returns to the GTCARD routine to read the next
control statement and perform the next
function. I 6 When the last control statement is read
and processed the GTCARD routine
branches to the EXIT routine.
The end of job statement (MSG001) is
displayed. If running under VM/370, the SYSPRINT device is closed and I DMKDDR I EXIT CMS8 I II I Diagram 5-1. Overview of the DDR Program
environment. If running standalone, the wait
state is entered. TESTCMS Chapter 5. !he DASD Dump Restore Program 95