
User Exits Reading and Modifying a VSE Label
Chapter. 6 Additional BIM-EPIC Utilities 6-51
Reading and Modifying a VSE Label
BIM-EPIC provides the TSIDUXI label exit to read and update a VSE label.
Using TSIDUXI, any field in a VSE label can be modified except the following:
• The 13-byte system code field
• File name (DTF name)
•
Any field in the LPL
The TSIDUXI.A module is distributed as a basis for coding your exit routine.
The Label Exit must reside in 24-bit SVA. At activation, BIM-EPIC looks for module
TSIDUXI in the SVA. Later, BIM-EPIC transfers control to it during open processing when a
VSE label is retrieved from the Label Area. Standard calling conventions are used when
BIM-EPIC passes control to TSIDUXI.
TSIDUXI uses the following registers:
Register Points to...
1 Parameter list addressed by the EPLI macro
13 Save area
14 Return address
15 Base address
All communication between BIM-EPIC and the TSIDUXI exit uses a parameter list passed in
Register 1. BIM-EPIC provides the EPLI macro to define this parameter list. The parameter
list contains:
• The function code indicating the type of call
• The address of a work area
• The address of the parameter list applicable to each exit call
Description
Processing
Registers
EPLI Macro and
Parameter List
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