Hexadecimal Field
Displacement Name
------------ 410 ALOKFR DC
414 ALOKSY DC
418 PSARECP S DC
41C PSARSV15 DS 430 INSTWRD 1 DC Page of SY20-0884 .... 3 As Updated Aug. 1,1979 by TNL SN25-0497 PSA F'ield Description, Contents, Meaning
-------------------------------------- V (DMKLOKFR) Attached processor free lockword
address V (DMKLOKSY) Attached processor system lockword
address F'O' Reserved for ECPS 5F Reserved for IBM use F'O' Reserved for installation use
section 1. CP Data Areas and Control Blocks 74.1

Aug. 1, 1979
74.2 IBM VM/370 Data Areas and Control Block Logic