IBM IC35L020 - Deskstar 20 GB Hard Drive - Execute Device Diagnostic (90 H); Figure 79. Execute Device Diagnostic Command (90 H)

15.2 Execute Device Diagnostic (90h)
see belowStatus
1 0 0 1 0 0 0 0
Command
- - - - - - - -
Device/Head
1 - 1 - - - - -
Device/Head
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder Low
- - - - - - - -
Sector Number
- - - - - - - -
Sector Number
- - - - - - - -
Sector Count
- - - - - - - -
Sector Count
see belowError
- - - - - - - -
Feature
- - - - - - - -
Data
- - - - - - - -
Data
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Register
Command Block Input
Registers
Command Block Output
Registers
0–0––0V0VVVVVVVV
ERRIDXCORDRQDSCDFRDYBSYAMNT0NABT0IDN0UNCCRC
0123456701234567
Status RegisterError Register
Figure 79. 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 67 on page 76 for the definitions.
Deskstar 60 GXP Hard disk drive specification
106