Register Initialization; Table 48: Default Register Values; Table 49: Diagnostic Codes - Hitachi HTS421212H9AT00 - Travelstar 120 GB Hard Drive Specifications

11.2 Register initialization

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

Table 48: Default Register Values

Register
Error
Sector Count
LBA Low
LBA Mid
LBA High
Device
Status
Alternate Status
The meaning of the Error Register diagnostic codes resulting from power on, hard reset, or the Execute Device
Diagnostic command are shown in the following table.

Table 49: Diagnostic codes

Code Description
01h No error detected
02h Format device error
03h Sector buffer error
04h ECC circuitry error
05h Controller microprocessor error
8xh Device 1 failed
Default Value
Diagnostic Code
01h
01h
00h
00h
A0h
50h
50h
Travelstar 4K120 Hard Disk Drive Specification
70