Register contents when Exit 22 gets control

The contents of the registers on entry to this exit are:

Register

Control

0

Not applicable.

1

Pointer to a parameter list with the following structure, mapped by $XPL:

XPLID

Eyecatcher

XPLLEVEL

Maintenance Level

XPLXITID

Exit Number

XPLEXLEV

Version Number

XPLIND

Indicator byte

JES2 sets the indicator byte to one of the following bit settings:

X022FRST: First call to exit Indicates a single cancel request or the first status request determined by examining the function bit (SACTFUNC) in the STAC.
X022MURE: Multiple recall Indicates a multiple status recall request.
X022MUST: Multiple status overflow Indicates a multiple status overflow condition. The buffer that holds the status information is too small.

XPLCOND

Condition byte

XPLRESP

Response byte

XPLSIZE

Size of parameter list

The STAC, mapped by the $STAC macro, is in a data space. Perform $ARMODE ON before accessing the data and $ARMODE OFF after finishing the access.

2-10

N/A

11

Address of the HCT

12

N/A

13

Address of the STATUS/CANCEL PCE

14

Return address

15

Entry address