Datasheet

Travelstar 80GN Hard Disk Drive Specification

105

13.3 Execute Device Diagnostic (90h)

Table 66: 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 Table 45: “Default Register Values” on page 70 for the definition.

Command Block Output Registers Command Block Input Registers

Data - - - - - - - - Data - - - - - - - -

Feature - - - - - - - Error see below

Sector Count - - - - - - - - Sector Count - - - - - - - -

LBA Low - - - - - - - - LBA Low - - - - - - - -

LBA Mid - - - - - - - - LBA Mid - - - - - - - -

LBA High - - - - - - - - LBA High - - - - - - - -

Device 1 - 1 - - - - - Device - - - - - - - -

Command 1 0 0 1 0 0 0 0 Status see below

Error Register Status Register

7654321 0 76543 21 0

CRC UNC 0 IDN 0 ABT T0N AMN BSY RDY DF DSC DRQ COR IDX ERR

0VVVVVV V 000-- 0- 0