Sony DDS-4 Product Description Manual page 122

6. COMMAND SPECIFICATION
Bit 7
Byte
157
158 WRTOK (1) DUP (0)
159
160
161 (MSB)
163
164 (MSB)
165
166 (MSB)
167
168 (MSB)
171
172
179
180
187
188
207
Density support data blocks shall be returned by ascending primary density code values.
Primary Density Code:
This field contains the value returned by a Mode Sense command for the density described in the remainder of the
density support block. The drive shall accept a Mode Select command containing this value, for appropriate media.
The value of 00h shall only be used for the default of the logical unit.
WRTOK:
The WRTOK bit of ZERO indicates that logical unit support for this density does not include writing to the media.
The WRTOK bit of ONE indicates the logical unit is capable of writing this density to either the currently mounted
medium (Media bit in CDB set to one) or for some media (Media bit in CDB set to Zero).
DUP:
The DUP bit of ZERO indicates this primary density code has exactly support data block. The DUP bit of ONE
indicates this primary density code is specified in more than on density support block.
DEFLT:
The DEFLT bit of ZERO indicates this density in not the default density of the drive. The DEFLT of ONE indicates
this density is the default density of the logical unit. If neither the Primary or Secondary density code is zero and the
DEFLT bit is one, the logical unit shall accept a Mode Select density code of 00h as equivalent to the Primary and
Secondary density code.
6 5 4
SECONDARY DENSITY CODE (25h)
DEFLT (1)
BITS PER MM (00 12 C4h)
MEDIA WIDTH (00 28h)
TRACKS (00 01h)
CAPACITY (00 00 4E 20h)
ASSIGNING ORGANIZATION (SONY)
DENSITY NAME (DDS4)
DESCRIPTION (20 GB)
3 2
Reserved (00h)
Reserved
Reserved
SONY SDT-10000/SDT-11000 DDS Tape Drive
REPORT DENSITY SUPPORT
1 0
(LSB)
(LSB)
(LSB)
(LSB)
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