Fujitsu MPG3XXXAT manual Information to be read by Identify Device command 1

At command issuance (I/O registers setting contents)

1F7H(CM)	1	1	1	0	1	1	0	0
1F6H(DH)	×	×	×	DV			xx
1F5H(CH)					xx
1F4H(CL)					xx
1F3H(SN)					xx
1F2H(SC)					xx
1F1H(FR)					xx

At command completion (I/O registers contents to be read)

	1F7H(ST)			Status information
	1F6H(DH)	×	×	×	DV		xx
	1F5H(CH)				xx
	1F4H(CL)				xx
	1F3H(SN)				xx
	1F2H(SC)				xx
	1F1H(ER)			Error information
	Table 5.5 Information to be read by IDENTIFY DEVICE command (1 of 7)
Word	Value					Description
0	X‘045A’	General Configuration *1
1	*2	Number of cylinders
2	X‘0000’	Retired
3	*3	Number of Heads
4	X‘0000’	Retired
5	X‘0000’	Retired
6	X‘003F’	Number of sectors per track
7-9	X‘000000000000’	Retired
10-19	–	Serial number (ASCII code) *4
20	X‘0003’	Old specifications
21	X‘0400’	Buffer size in 512 byte increments
22	X‘0004’	Number of ECC bytes transferred at READ LONG or WRITE LONG command
23-26	–	Firmware revision (ASCII code) *5
27-46	–	Model number (ASCII code) *6
47	X‘8010’	Maximum number of sectors per interrupt on READ/WRITE MULTIPLE command
48	X‘0000’	Reserved
49	X‘2B00’	Capabilities *7
50	X‘4000’	Capabilities
51	X‘0200’	PIO data transfer mode *8
52	X‘0200’	Single word DMA data transfer timing mode
53	X‘0007’	Enable/disable setting of words 54-58, 64-70 and 88 *9

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