Table 4-2: Inquiry Command Field Values; Table 4-3: Standard Inquiry Data Format - Spectra Logic Spectra 2k Develop Manual

Table 4-2: Inquiry Command Field Values

Field Location
Field Name
Byte
Logical Unit
01
Number
EVPD
(Enable Vital 01
Product Data)
Allocation
04
Length
If the EVPD bit in the INQUIRY command is 0, the library returns standard INQUIRY data, as
show in Table 4-3. Values and meanings of field names in bold are further described in
Table 4-4.

Table 4-3: Standard Inquiry Data Format

Bit
Byte
0
00
01 RMB
02 ISO Version
03 AENC
04
05
07 RelAdr
Chapter 4. Inquiry—12h
Values
Meaning
Allowed
Bit
0h
7-5
Anything
else
Requests the library to return only the standard inquiry data page. The
0 0
All 00-FFh
1 2
Peripheral Qualifier
TRMIOP Reserved
WBus32 WBus16
Requests Peripheral Qualifier and Peripheral Device Type data for the
library itself. This is the only meaningful logical unit number.
Unlike other commands, a value other than 0h in this field does not
cause the library to return a CHECK CONDITION status. See
Peripheral Qualifier and Peripheral Device Type below.
Page Code field is then ignored. The library does not support any Vital
Product Data pages.
Specifies the number of bytes the initiator allocates for data returned
from the inquiry command. Zero indicates no inquiry data is to be
transferred; this condition is not considered an error. The library
terminates the data in phase when it transfers either the number of
bytes specified by the allocation length field or all of the available
inquiry data, whichever is less. The data length for the standard
inquiry data returned by the library is 38h (56 bytes)
3 4
Peripheral Device Type
Device Type Modifier
ECMA Version
Additional Length
Reserved
Sync Linked
16
5 6 7
ANSI-approved Version
Response Data Format
Reserved CmdQue SftRe