DMFKYREC, DMPTBREC DMPKYREC contains the storage keys of each 2K block of main storage at the time of SVC 0 or a PSi restart condition. DMPKYREC and DMPINR!C are used for debugging operations. I I S*1 o 1---..1 Hexadecimal Field
Displacement Nalle
------------ 0 DMPKEYS 0 DMPKEY DS eRG DS DMPKEYS (4096 bytes) 4096X DMPKEYS 1X Field Description, contents, Meaning Main storage keys S*1 Storage key for each 2K block DMPTBREC is a listing of all entry points in the system and their locations.
o DMPSYMNM 8 DMPSYMVA 10 DMPSYMEN Hexadecimal Field
Displacement Name Field Description, Contents, Meaning C DMPSYMEN DS 341XL12 Symbol table entries
eRG DMPSYMEN 0 DMPSYMNM DS CL8 CSECT or entry point name
8 DMPSYMVA DS A Location in main storage of this symbol
Section 1. CP Data Areas and centrol Blocks 21

ECBLOK ECBLOK provides an extension to the VMELOK for virtual machine operaticn in syste./310 extended control mode. The VMECEIT field of the VMBLOK points to ECELCK. o
8 10 18 20 28 30 38 40 EITCRO EITCR2 EITCR4 EITCR6 EITCR8 EITCR10 EITCR12 EITCR14 EXTSHCRO 48 EITSHLER I EITVSEGS 50 58 60 EITSHSEG EXTPERAD 68 EITCPTRC Hexadecimal Field
Displacement Naae
o
4
8 C 10 14
18 1C 20 24
28 2C 30 34
38 3C EXTCRO DS
EITCR1 DS EITCR2 DS EXTCR3 DS EXTCR4 DS
EITCR5 DS EXTCR6 DS
EITCR1 DS EXTCR8 DS EXTCR9 DS EXTCR10 DS EXTCR11 DS EXTCR12 DS EXTCR13 DS EXTCR14 DS EXTCR15 DS
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F
1F EITCR1 EITCR3 lI'ICR5 EI ' lCR1 EI'ICR9 lITCR11 EI'ICR13 ll'ICR15 EI'ISHCR1 EI'lSTOLD EI'ISlGLR EI'IARCH EITPERCD EITCOPY EITCPTftR EI'ICCTRQ Field Description, Contents, Beaning Virtual control register 0; architecture
controls Virtual control register 1; segment table
pointer Virtual control registers 2 thrcugh 15
22 IBB VM/310 Data Areas and Control Block Logic