ZUXRC

0

Zero on entry to PRECMP and PREXPD. CA Compress/2 Return Code on entry to POSTCMP and POSTXPD. Set this field to set the return code, as documented in Return Codes in this chapter.

ZUXCLIST

4

Address of CA Compress/2 Parameter List as described in the chapter CA Compress/2, except that the RDW is never included unless the RDL begins with V2-4.

ZUXDDNAM

8

Address of User ddname.

ZUXDSN

12

Address of DSNAME.

ZUXURPL

16

Address of User RPL - refers to uncompressed record

ZUXCRPL

20

Address of Compress RPL - refers to compressed record

ZUXTCB

24

Address of TCB

ZUXDEBUG

28

Address of Debug Byte. If the byte is nonzero, PST tracing is active, and if zero, it is not. Use this byte to determine whether you want to issue diagnostic messages, and you can change this byte in order to control tracing in module ZSURSHRK for this data set.

ZUXSPA

32

User Exit Scratch Pad Area. This area is 96 bytes long, and the exit can use it for any purpose. Because CA Compress does not use this area after I/O is complete, its contents are valid from one phase to the next.