offset option:

-o oo ll

Hex display data at offset oo of length ll.

arguments:

filename

The name of the DASD image file to be compressed.

5.4.4 Examples

Example 1:

Display the DEVHDR and CDEVHDR for a CCKD
DASD i
mage file.

CCKDDIAG -d -c D:\MVS\DASD\MVSRES.CCKD

Example 2:

Display the L1TAB and enable debug output for a CCKD DASD image file.

CCKDDIAG -1 -g D:\MVS\DASD\MVSRES.CCKD

Example 3:

Display relative TT data for a CCKD DASD image file.

CCKDDIAG -r 15 D:\MVS\DASD\MVSRES.CCKD

5.4.5 Sample Utility Output

Sample 1:

Display the DEVHDR and CDEVHDR for a CCKD DASD image file and additionally enable debug output.

D:\Hercules>cckddiag -d -c -g D:\MVS\DASD\MVSRES.CCKD

READPOS seeking 0 (0x00000000)

READPOS reading buf addr 0012FA68 length 512 (0x00000200)

DEVHDR - 512 (decimal) bytes:

+0000 434B445F 43333730 1E000000 004C0000 C.D^C370.....<..

+0010 50000000 00000000 00000000 00000000 &...............

+0020 00000000 00000000 00000000 00000000 ................

3350 device has 30 heads/cylinder

READPOS seeking 512 (0x00000200)

READPOS reading buf addr 0012FC68 length 512 (0x00000200)

CDEVHDR - 512 (decimal) bytes:

+0000 00030141 42000000 00010000 0CFF5901 ...AB.........Y.

+0010 21F74901 19631500 EB071000 5CE90E00 !7I..c......*Z..

+0020 0B000000 00000000 30020000 00010500 ........0.......

+0030 00000000 00000000 00000000 00000000 ................

MAKBUF malloc L1TAB buffer of 264 bytes at 003B2860

READPOS seeking 1024 (0x00000400)

READPOS reading buf addr 003B2860 length 264 (0x00000108)

Figure 31: CCKDDIAG utility output