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5-34 C141-E042-01EN
Word Value Description
81 X’0000’ Minor version number (not reported)
82 X’000B’ Support of command sets *12
83 X’4000’ Support of command sets (fixed)
84-87 X’00’ Reserved
88 X’0000’ Ultra DMA transfer mode *13
89-127 X’00’ Reserved
128 (Variable) Security status *13
129-159 X’00’ Undefined
160-255 X’00’ Reserved
Table 5.4 Information to be read by IDENTIFY DEVICE COMMAND (2 of 3)
*1 Word 0: General configuration 0
Bit 15: ATA device = 0, ATAPI device = 1 0
Bit 14-12: Undefined 0
Bit 11: Rotational speed tolerance is more than 0.5 %. 1
Bit 10: Disk-data transfer rate 10 Mbps. 1
Bit 9: Disk-data transfer rate is faster than 5 Mbps
but 10 Mbps or slower 0
Bit 8: Disk-data transfer rate is 5 Mbps or slower. 0
Bit 7: Removable disk drive 0
Bit 6: Fixed drive. 1
Bit 5: Spindle motor control option implemented. 0
Bit 4: Head switching time is more than 15 microseconds. 1
Bit 3: Not MFM encoded. 1
Bit 2: Soft sectored. 0
Bit 1: Hard sectored. 1
Bit 0: Reserved 0
*2 Word 10-19: Serial number; ASCII code (20 characters, right-justified)
*3 Word 23-26: Firmware revision; ASCII code (8 characters, Left-justified)