System Control Blocks

Offset
52 (34) 1
52 (34) 4
56 (38) 4
60 (3C) 1
61 (3D) 1
62 (3E) 2
64 (40) 18
82 (52) 2
S4 (54) 4
Bytes and Field
Alignment Name
DC BOPI' CD
1 .•.
.1 •.
• . 1.
DCBCHECK
DCBSYNAD
DCBFLAG
1 •••
.1 ••
11 ••
•• xx xxxx
DCBBLKSI
DCBLRECL
DCBCNTRL,
DCBNOl'E,
DCBPOINT
DATA CONTROL BLOCK -- TCAM
Field Description, Contents, Meaning
APPLICATION PROGRAM EXTENSION (Continued)
Option codes.
Source or destination name precedes message (after
control byte) (TCAM process queue).
Work unit is a message. Default work unit is a
record. (TCAM process queue).
control byte precedes work unit (TCAM process queue) •
Address of the CHECK module.
Address of the user synchronizing routine.
TeAM flag byte.
value is X'SO' - STOP = QUICK was specified by the
user.
value is X'40' - STOP = FLUSH was specified by the
user.
value is X'CO' - STOP = BOTH was specified by the
user.
(Reserved bits)
Reserved.
Maximum block size.
Reserved.
110 OS System Control Blocks (Release 21.7)
Logical record length or block size.
Address of CNTRL or the NOTE/POINT
module.