System Control Blocks

Offset
32 (20) 8
40 (28) 1
41 (29) • 3
44 (2C) 4
48 (30) 21
69 (45) • 3
72 (48) 12
84 (54) 1
85 (55) • 1
Bytes and
Alignment
86 (56) 2
DATA EXTENT BLOCK -- QTAM
Field Description, Contents, Meaning
BUFFER REQUEST BLOCK, QUEUE CONTROL BLOCK
Reserved.
LINE CONTROL BLOCK
Condition code from the line control block.
Address of QPRIRITY subtask.
END OF QUEUE CONTROL BLOCK
Reserved.
END OF BUFFER REQUEST BLOCK
Reserved.
Address of the queue control block for the destination queue.
Save area.
Reserved.
Temporary location for the message priority code.
Reserved.
END OF LINE CONTROL BrOCK
END OF QTAM DEB
132 OS System Control Blocks (Release 21.1)