| 0 |
(0) |
CHARACTER |
* |
ADRBMB |
|
| 0 |
(0) |
CHARACTER |
12 |
BMHDR |
BITMAP HEADER |
| 0 |
(0) |
CHARACTER |
4 |
BMID |
BLK IDENTIFIER EBCDIC "BMBB" |
| 4 |
(4) |
ADDRESS |
4 |
BMNPTR |
ADDR OF NEXT BITMAP SEGMENT/0 |
| 8 |
(8) |
UNSIGNED |
4 |
BMNTRK |
NUMBER OF TRACKS MAPPED BY SEGMENT |
| 8 |
(8) |
UNSIGNED |
2 |
BMNTRKTP |
NUMBER OF TRACKS MAPPED BY SEGMENT |
| 10 |
(A) |
CHARACTER |
2 |
* |
RESERVED |
| 12 |
(C) |
BITSTRING |
0 |
BMBITMAP |
BITMAP LAYOUT, CONTIGUOUS BITS FOR
EACH TRACK. 1=OPERATE ON CORRESPONDING TRACK, 0=SKIP TRACK |
| Note:
|
| 0 |
(0) |
STRUCTURE |
* |
ADRCMB |
CHUNK MAP BLOCK |
| 0 |
(0) |
CHARACTER |
12 |
CMHDR |
CHUNK MAP HEADER |
| 0 |
(0) |
CHARACTER |
4 |
CMID |
BLOCK EYECATCHER |
| 4 |
(4) |
ADDRESS |
4 |
CMNPTR |
PTR TO NEXT CHUNKMAP |
| 8 |
(8) |
UNSIGNED |
4 |
CMNCHNK |
NUMBER OF CHUNKS MAPPED |
| 8 |
(8) |
UNSIGNED |
2 |
CMNCHKTP |
SHIFTED NUMBER OF CHUNKS |
| 10 |
(A) |
CHARACTER |
2 |
* |
RESERVED BY THIS SEGMENT |
| 12 |
(C) |
BITSTRING |
0 |
CMBITMAP |
BITMAP LAYOUT, CONTIG BITS FOR EACH 21 CYL CHUNK
TO BE PROCESSED |
| Note:
|
| 0 |
(0) |
STRUCTURE |
* |
ADRTSMB |
TRACK SUBMAP |
| 0 |
(0) |
CHARACTER |
8 |
TSMHDR |
TRACK SUBMAP HEADER |
| 0 |
(0) |
CHARACTER |
4 |
TSMID |
TRACK SUBMAP EYECATCHER |
| 4 |
(4) |
SIGNED |
4 |
TSMCHKCC |
CYL ADDR OF CHUNK START |
| 8 |
(8) |
BIT(*) |
* |
TSMBITMP |
TRACK SUB BITMAP |
z/OS DFSMSdss Storage Administration
Copyright IBM Corporation 1990, 2014