IBM IC35L040AVVN07-0 Hard Drive Specifications - Page 125

Execute Device Diagnostic 90h

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11.3 Execute Device Diagnostic (90h) Command Block Output Registers Register 76543210 Data -------- Feature -------- Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 - 1 - - - - - Command 10010000 Command Block Input Registers Register 76543210 Data -------- Error see below Sector Count Sector Number Cylinder Low Cylinder High Device/Head Status see below Error Register 76543210 CRC UNC 0 IDN 0 ABT T0N AMN VVVVVVVV Status Register 7 6 5 4 3 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0 V 0 - - 0 -0 Figure 95. Execute Device Diagnostic Command (90h) The Execute Device Diagnostic command performs the internal diagnostic tests implemented by the device. The results of the test are stored in the Error Register. The normal Error Register bit definitions do not apply to this command. Instead, the register contains a diagnostic code. See Figure 73 on page 70 for the definition. Deskstar 120GXP hard disk drive specifications 111

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11.3 Execute Device Diagnostic (90h)
see below
Status
10010000
Command
--------
Device/Head
1-1-----
Device/Head
--------
Cylinder High
--------
Cylinder High
--------
Cylinder Low
--------
Cylinder Low
--------
Sector Number
--------
Sector Number
--------
Sector Count
--------
Sector Count
see below
Error
--------
Feature
--------
Data
--------
Data
76543210
Register
76543210
Register
Command Block Input
Registers
Command Block Output
Registers
0
–
0
–
–
0
V
0
V
V
V
V
V
V
V
V
ERR
IDX
COR
DRQ
DSC
DF
RDY
BSY
AMN
T0N
ABT
0
IDN
0
UNC
CRC
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Status Register
Error Register
Figure 95. Execute Device Diagnostic Command (90h)
The Execute Device Diagnostic command performs the internal diagnostic tests implemented by the
device. The results of the test are stored in the Error Register.
The normal Error Register bit definitions do not apply to this command. Instead, the register contains a
diagnostic code. See Figure 73 on page 70 for the definition.
Deskstar 120GXP hard disk drive specifications
111