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Data Extent Block Flelds • . • . •
Appendix:
Restore Macro-Instruction . • .
RESTORE Macro-Instruction • •
Control Statements Required •
RESTORE Macro-Definition • • •
.
'. .
.
· . 96
• 97
97
97
• 97
EXECUTE
DIRECT
ACCESS
PROGRAM
(XDAP)
MACRO-INSTRUCTION. . • • . 98
Execute Direct Access Program (XDAP) Macro-Instruction. .
• • 99
Requirements for Execution of Direct-Access Program
• • 99
XDAP Programming Specifications . • . • . . •
• .100
• .100
Macro-Instructions • • • . • . . . • • . •
DCB -- Define Data Control Block. . . •
OPEN -- Initialize Data Control Block .
XDAP -- Execute Direct-Access Program •
EOV -- End of Volume. . • • •
d
•
•
•
•
.100
.. • • • • . • • • .100
. • • • . • .100
.101
CLOSE -- Restore Data Control Block
• .101
The XDAP Control Block • • •
Event Control Block (ECB) • •
Input/Output Block (lOB) • • •
Direct-Access Channel Program
. • • • • . • . • .102
XDAP Options • • • . • • • • • • • •
· • . 102
• • . 103
.103
.103
Conversion of Relative Track Address to Actual Address .
· .103
Appendages • • • • • • • • • • . • •
• • • .
L- and E- Forms of XDAP Macro-Instruction.
Appendix:
CVT Macro-Instruction. . • • .
HOW
Format of the CVT Macro-Instruction
Control Statements Required •
CVT Macro-Definition. • • • •
TO
USE
THE
TRACING
ROUTINE
HOW
TO
USE
THE
TRACING
ROUTINE
Table Entry Formats • _
Location of the Table • • . •
IMPLEMENTING
DATA
SET
PROTECTION
Implementing Data Set Protection . •
Password Data Set Characteristics and Record Format •
Protecting the Password Data Set • •
Creating Protected Data Sets . • • •
Protection Feature Operating Characteristics.
Termination of Processing . • . • • • •
Volume Switching. . • • • • •
Data Set Concatention • • • •
SCRATCH and RENAME Functions.
Counter Maintenance •
• • • .
• • . 104
.104
• .105
.105
• • • . 105
• • . 105
• .108
• • . 109
· • . 109
· • . 109
• .111
• • • • 112
• .112
• .113
.113
· . • . 113
· . • . 113
· • • . . .114
· • . 114
.114
· . • • . .114
THE
RESIDENT
BLDL
TABLE
AND
RESIDENT
ACCESS
'METHOD
OPTIONS • . 115
The Resident BLDL Table and Resident Access Method Options • .
· .116
The Resident BLDL Table Option. • . •
Selecting Entries for the Resident BLDL Table. . . • •
Table Size. • • . •
• • • •
Frequency of Use. • • • . . •
The Resident Access Method Option •
• • . 116
.117
· . • . • .117
• • • • • . 117
.117
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