System Control Blocks

72 (48)
FORMAT 2 -- INDEX DATA SET CONTROL BLOCK
93 (5D)
DS2CYLAD
Address of First Track of Cylinder Index
DS2ADLIN
Address of First Track of Lowest-Level Master Index
186 (56)
i
DS2ADHIN
Address of First Track of Highest-Level Master Index
DS2LPRAD
Address of Last Record in Prime Data Area
79 (4F)
101 (65) DS2LTRAD
Address of Last Entry in Track Index on Last Cylinder
106 (6A)
DS2LCYAD 111 (6F)
Address of Last Entry in Cylinder Index
DS2LMSAD
Address of Last Entry in Master Index
__ 116 (74) DS2LOVAD
Address of Last Record Written in Indenenrlent ()vprflnw Arpn
,- - . - - . --
124 (7C) DS2BYOVL 126 (7E) DS2RORG2
No. of Bytes Left on Independent Overflow Track
No. of Tracks Left on Independent Overflow Area
i28 (80) DS20VKCT 130 (82) DS2RORGl
No. of Records in Overflow Area No. of Full Cylinder Overflow Areas
132 (84) DS2NIRT 135 (87)
HHR of the Dummy Track Index Entry
DS2PTRDS
Direct-Access Address of Next DSCB
Figure 15D. Format 2 -- Index Data Set Control Block (Part 2 of 2)
139 (8B)
Format 2 (Index) DSCB 111
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