Register Initialization; Table 29 Default Register Values; Table 30 Diagnostic Codes; Diagnostic And Reset Considerations - Hitachi HDS723020BLA642 Specifications

9.1.1

Register Initialization

Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
Alternate Status

Table 29 Default Register Values

After power on, hard reset, or software reset, the register values are initialized as shown in

Table 30 Diagnostic Codes

The meaning of the Error Register diagnostic codes resulting from power on, hard reset or the Execute Device
Diagnostic command is shown in
9.2

Diagnostic and Reset considerations

In each case of Power on Reset, COMRESET, Soft reset, and EXECUTE DEVICE DIAGNOSTIC command, the
device is diagnosed. And Error register is set as shown in
Register
Code
01h No error Detected
02h Formatter device error
03h Sector buffer error
04h ECC circuitry error
05h Controller microprocessor error
Table 30
.
Hitachi hard disk drive specifications
Default Value
Diagnostic Code
01h
01h
00h
00h
00h
50h
50h
Description
Table 30
.
57
Table 29
.