gtpm1m32TPF V4R1 Migration Guide: 3.1 to 4.1

Modifying System Generation Option Values

You can enter the new ZSYSG command to modify a selected number of system generation settings (using keywords) that are initially set by system initialization program (SIP).

Keyword
Description

 KPFBK 
Keypoint fallback

 VEQR 
Virtual-equals-real mode

 CLEAR 
Clear block during GETCC (associated with the IBM TPFDF user exits)

 TPFDF 
IBM TPFDF user exit

System generation bits that require the reassembling of programs, allocator changes, or the rerunning of SIP if they are changed cannot be modified using this message. Changes made take effect on the next IPL of the system.