"'IiI \0 1'1 PSA (Prefix Storage Areal (1) ASYSVM -I--- --- .... n CORTI\BLE I'd n CORVM - CORFPNT CORBPNT 0 1:1 r+ 1'1 0 CORFPNT CORBPNT ..... ttl ..... CORFPNT CORBPNT 0 0 CORSWPNT CORPGPNT ---1---_ !XI (1) ..... PI r+ 0 1:1 Ul Main 1/0 Link I:J" I'd Ul en (1) 0 r+ 0 1:1 .... n It1 t::I PI r+ PI 1'1 IT) PI Ul PI 1:1 01 1 ___ n_" IL--J n 0 1:1 NICBLOK r+ 1'1 0 ..... tJj ..... 0 0 X" Ul .... vc.U'WK. 8K. ECBLOK EXTCPTRQ S.HADOW 'J' SHADOW SEGTABLE
SEGPAGE I .... t-i gUl eUl Ul (1) (1)0 1'11:1 (1)0 ..... 0 PI 1:1 r+r+ o • 1:11:1 Ul Ul 1:1" Ul Ul 0 01'1 o 1:10 r+1:I ..... 0 t:f/-t) ..... r+ 01:1" UlEl PI r+w. 00 (1) 1'1 PIn g.1'd 001 HPI . 1'1 (1) PI Ul PI 1:1 OJ 0 0 1:1 ti· H 0 1-' b" 1-' 0 n ="" rn • \,Q ,:::: H (D n O· :::l ...Jr, ("') ." C Q) r+ Q) » ... CD Q) en Q) :::l C. ("') 0 :::l r+ ... 2- txJ 0" (') " en

ACCTBLOK, ACNTBLOK lCCTBLOK provides header information for spool files. The VMACCUBT field in the VMELCK points to ACCTBLOK. Hexadecimal o
8 10 Displacement 0 8 10 Field Name ACCTUSER ACCTACNO ACCTDIST ACCTLENG DS
DS
DS EQU CL8 CL8 CL8 ACCTUSER ACCTACNO ACCTDIST Field Description, Contents, Meaning Virtual machine identification
Virtual machine accounting number Virtual machine distribution number (*-ACCTBLOK)/8 Size of ACCTBLOK in doublevords (X'03') ACNTBLOK provides accounting and statistical information on each user that bas used VM/370 facilities. The ARSPAC field in the Prefix Storage Area (PSA) Foints to the start
of the chain ef ACNTBLOKs. o ACNTCCW 8 ACNTNEXT ACNTDATA r
58 I ACNTBACK Hexadecimal Field
Displacement Name Field Description, Contents, Meaning ------------ -------------------------------------- 0 ACNTCCW DS D Punch CCW fer accounting card
8 ACNTNEXT DS F Address of next ACBTBLOK in chain C ACNTDATA DS CL80 Accounting information (see "Fermat for Oser Cards") 5C ACBTBACK DS F Address of previous ACNTBLCK in chain ACNTSIZE EQO C*-ACBTBLOK) /8 Size of ACN'IBLOK in doublewcrds (X'OC') 2 IBM VM/370 Data Areas and Control Block Logic