OPSECT OPSECT describes the fields used by several programs as parameter lists for reading and
writing on disks and other devices. The OPSECT CSECT is pointed to by the AOPSECT field
in NUCON. o
8 10 18 20 28 30 38 40 48 50 58 60 68 70 78 80 88 90 98' AO A8 BO B8 CO C8 CMSOP FILENAME FILETYPE FILE MODE FILEITEM FILEBUFF FILEBYTE FILEFORM FILECOUT FILEREAD SAVER14 SAVER15 SAVERO SAVER1 CMSNAME CMSNAME (cant.) CONREAD CONREAD (cant.) CONRDBUF A*1 CONRDCNT 1////////////1////////////// WAITLIST CONWRITE CONWRBUF I A*2 CONWRCNT WAITLST WAITDEV REALLST READLST (cant.) RtBUFF RDCCW RDCOUNT PUNCHLST PUNCHLST (cant.) PUNEUFF PUNCOUNT PRINTLS'I PRINTLST (cant.) PRBOF PRCNT TAPELIS'I TAPE LIST (cant.) TAPEOPER TAPEOPEB (cant.) TAPEDEV A*3 TAPEBUFF TAPE SIZE
Section 2. CMS Lata Areas and central Blocks 219

OPSECT I DO I TAPECOUT CLOSIO 1--------·-------------------------------------------- D81 CLOSIO (cont.) CLOSIODV 1---------------------------------------------------- EO I CLOSIODV (cont.) I I E81////////////////////////////I/////////////////////////// • • ////////////////////////////1/////////////////////////// • • ////////////////////////////1/////////////////////////// • • ////////////////////////////1/////////////////////////1/. I I 118 I EXLEVEL IXF 1 I I 1 120 I EXNUM !XArD I I I 1281////////////////////////////1///////////////////////////1 I ' 130 I FCBIO A*4 Hexadecimal Field
Displacement
------------ 0 0 8 10 18
1A
1C 20 24
26
28
2C 30 34
38
3C Nalle 1ig!.!! UQ 1!§! PLIST DS OD CMSOP DS CL8 FILENAME DS CL8 FILETYPE DS CL8 FILEMODE DS Cl2 FILEITEM DS H FILEBUFF DS F FILEBYTE DS F PILEPORM DS Cl2 FILECOUT DS H PILEREAD DS P POINTERS EQU FIlEITEM APST EQU PILEBUFF IOAREl EQU FIlEBUPF IOLENGTH EQU FIlEBYTE SAVER14 DC P'O' SAVER15 DC p'O'· SAVERO DC P'O' SAVER1 DC P'O' CMSNAME DC CL8'PILE' 1!§!§ 44 DS OF 44
4C 50 51
52
54 CON READ DC CONRDBUF DC CONRDCOD DC
DC CONRDCNT DC
DC Cl8'WAITRD' V (CMNDLINE) C'U' A*1 X'O' AL2 (0) P'O' List
58 WAITLIST DS --OF 58 DC Cl8'CONWAIT' Pield Description, Contents, Meaning I/O operation command word
Filename Piletype Filemode Itea identification number Input/output buffer
Data count
File format: fixed/variatle records
Records per block
Read data count
Euffer area location
Euffer length
Temporary R14 save
Temporary R15 save Temporary RO save Temporary R1 save
Default filename Terminal read
Address of input buffer
Translate code
Data byte count
Reserved for IBM use 220 IBM VM/370 Data Areas and Control Block Logic