IBM System/360 System Programmer's Guide

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
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.105
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• .108
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• .113
.113
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· •. 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
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• ••••. 117
.117

IBM System/360 Specifications

General

Brand	IBM
Model	System/360
Category	Desktop
Language	English