Device Behavior Page (C3H); Lock-Unlock Cache Command (36H) - Seagate SCSI Interface Product Manual

SCSI Interface Product Manual, Rev. J
5.6.9

Device Behavior page (C3h)

The Device Behavior page (Table 67) will be used by the regression tests to determine what behavior should
be expected from a particular firmware package.
Table 67: Device Behavior page (C3h)
Bit 7
Byte
0 Peripheral Qualifier [1]
1 Page Code (C3h)
2 Reserved
3 Page Length [2]
4 Version Number [3]
5 Behavior Code [4]
6 Behavior Code Version Number [4]
7
: ASCII Family Number (16 bytes) [5]
22
23 Maximum Interleave [6]
24 Default Number of Cache Segments [7]
25+ Feature Flags and Additional Byte Fields will go here but are undefined at this time.
Notes.
[1] The Peripheral Qualifier field and Peripheral Device Type field value of 00h indicates a direct-access
device (magnetic disc) is connected to this logical unit.
[2] Page Length defines the length of the Device Behavior information in bytes. If the allocation length is too
small to transfer all of the page, the page length shall not be adjusted to reflect the truncation.
[3] The Version Number is a one-byte short form notation for the 24-byte assignment in the Firmware Num-
bers page. Version Numbers are registered by Engineering services.
[4] The Behavior Code and Behavior Code Version Number are jointly assigned by the Firmware Engineering
Managers of all SCSI design locations.
[5] The ASCII Family Number field contains the drive model number. The data is left-aligned within this field.
[6] The Maximum Interleave byte specifies the maximum value which the drive can support in the least signif-
icant byte of Interleave in the Format Unit command (see Table 38). The actual interleave which has been
used during the last format, providing it has not been changed by an intervening Mode Select command,
is reported in the Interleave Bytes of the Format Device Bytes of the Format Device Page (see Table 92).
[7] The Default Number of Cache Segments field gives the number of segments into which the host requests
the drive divide the cache.
5.7

Lock-unlock Cache command (36h)

Not implemented. If received, a Check Condition status is sent.
6 5 4 3
Peripheral Device Type [1]
2 1
101
0