IBM SC34-6814-04 - Manual (Page 245)

Note: The XALTENF exit, used to handle the “terminal not known” condition, is
also invoked from the terminal allocation program. XALTENF is described on
page “‘Terminal not known’ condition exits XALTENF and XICTENF” on page
224.
Terminal control program exits XTCIN, XTCOUT, and XTCATT
Exit XTCIN
When invoked
After an input event for a sequential device.
Exit-specific parameters
UEPTCTTE
Address of the terminal control table terminal entry (TCTTE). The
TCTTE can be mapped using the DSECT DFHTCTTE.
UEPTIOA
Address of the terminal input/output area (TIOA). Your exit program
should not change the address. The TIOA can be mapped using the
DSECT DFHTIOA. However, fields TIOASAL and TIOASCA are not
programming interfaces.
UEPTCTLE
Address of the terminal control table line entry (TCTLE). The
TCTLE can be mapped using the DSECT DFHTCTLE.
Return codes
UERCNORM
Continue processing.
XPI calls
All can be used. However, note that you cannot use a GETMAIN call to
obtain terminal-class storage for use as a replacement TIOA.
Exit XTCOUT
When invoked
Before an output event for a sequential device.
Exit-specific parameters
UEPTCTTE
Address of the terminal control table terminal entry (TCTTE). The
TCTTE can be mapped using the DSECT DFHTCTTE.
UEPTIOA
Address of the terminal input/output area (TIOA). Your exit program
should not change the address. The TIOA can be mapped using the
DSECT DFHTIOA. However, fields TIOASAL and TIOASCA are not
programming interfaces.
UEPTCTLE
Address of the terminal control table line entry (TCTLE). The
TCTLE can be mapped using the DSECT DFHTCTLE.
Return codes
UERCNORM
Continue processing.
Chapter 1. Global user exit programs 223