Hitachi 7K100 Hard Drive Specifications - Page 116
Execute Device Diagnostic 90h
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13.3 Execute Device Diagnostic (90h) Table 61: Execute Device Diagnostic command (90h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count LBA Low LBA Mid LBA High Device 1 - 1 - - - - - Command 1 0 0 1 0 0 0 0 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count LBA Low LBA Mid LBA High Device Status see below 76 CRC UNC 0V Error Register 54 3 2 1 0 0 IDN 0 ABT T0N AMN VV V V V V Status Register 7 654 3 2 1 0 BSY RDY DF DSC DRQ COR IDX ERR 0 00- - 0 - 0 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 47: "Diagnostic codes" on page 66 for the definition. Travelstar 7K100 Hard Disk Drive Specification 102