Send Diagnostic Command - Seagate ST11200 Product Manual

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[5] An alternate sector (ALTSEC) bit of one indicates that the translated address is physically located in an
alternate sector of the medium. If the disc drive cannot determine if all or part of the translated address is
located in an alternate sector it shall set this bit to zero. An ALTSEC bit of zero indicates that no part of the
translated address is located in an alternate sector of the medium or that the disc drive is unable to
determine this information.
[6] An alternate track (ALTTRK) bit of one indicates that part or all of the translated address is located on an
alternate track of the medium or the disc drive cannot determine if all or part of the translated address is
located on an alternate track. An ALTTRK bit of zero indicates that no part of the translated address is
located on an alternate track of the medium.
[7] The Translated Format field contains the value from the Send Diagnostic command translate format field
(see Table 5.1.1-17). The values are 000 (Logical block format) or 101 (Physical sector address format).
[8] The Translated Address field contains the address the target translated from the address supplied by the
initiator in the Send Diagnostic command. This field shall be in the format specified in the translate format
field. The supported formats are shown in Tables 5.1.1-14a and 5.1.1-14b.
5.1.1.6 Send Diagnostic Command (1Dh)
Bit 7
Byte(s)
0 0
1 Logical Unit No.
0
2 0
3 Parameter List Length (MSB)
0
4 Parameter List Length (LSB)
0
5 0
This command requests that the disc drive perform diagnostic tests on itself, or perform other optional opera-
tions. Table 5.1.1-15 shows the format of the Send Diagnostics command as implemented by the disc drive.
When the Self Test bit is zero (see note [2]), this command is usually followed by a Receive Diagnostics
Results command and a subsequent data-in phase that returns data to the initiator. Using this latter proce-
dure of Send Diagnostics/Receive Diagnostics Results commands the initiator can ask the drive to return a
list of optional operations it supports (Table 5.1.1-16) and then request a supported additional operation. The
disc drive supports only the Translate Address operation (Table 5.1.1-17).
Product Manual - Disc Drive SCSI-2/SCSI-3 Interface (Vol. 2; Ver. 2), Rev. E
Table 5.1.1-15. Send Diagnostic Command
6 5
0 0
0 0
0 0
0 0
0 0
0 0
4 3
1 1
PF[1] RSVD
0
0 0
0 0
0 (see explanation below)
0 0
2 1
1 0
SELF DEVOFL UnitOFL
TEST [2] [3]
0 0
0 0
0 Flag
0
1
[4]
0
0
[5]
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