Setting Up User Exits › Switch-in Exit › Parameter List

Parameter List

The parameter list consists of six full words, and a final single byte flag, containing:

+0

Address of the user definition (UINDEX)

+4

Address of the terminal session control block (SB)

+8

Address of the user session definition (UENTRY) being switched to

+12

Address of the application session control block (SB)

+16

Address of a 256 byte area into which the exit can place data or a sense code to be sent to the application

+20

Exit supplied length of the data (maximum length 256) or sense code (maximum length 8)

+24

A flag byte:

Upon entry the following flags can be set for the exit:

X'80'

Graphics data was received from the application.

X'40'

Destination/Origin Structured Field was received from the application.

Upon return the following flags can be set by the exit:

X'20'

CA TPX is to send an LUSTAT to the application.

X'10'

CA TPX is to send a data RU to the application.