Seagate ST9200420ASG, ST980813ASG, ST9160823ASG, ST9120823AS, ST9100821AS manual XxxxH

Word	Description	Value
51	PIO data-transfer cycle timing mode	0200H
52	Retired	0200H
53	Words 54–58, 64–70 and 88 are valid	0007H
54	Number of current logical cylinders	xxxxH
55	Number of current logical heads	xxxxH
56	Number of current logical sectors per logical track	xxxxH
57–58	Current capacity in sectors	xxxxH
59	Number of sectors transferred during a Read Multiple or	xxxxH
	Write Multiple command
60–61	Total number of user-addressable LBA sectors available	ST9200420AS = 390,721,968
	(see Section 2.2 for related information)	ST9200420ASG = 390,721,968
		ST9160823AS = 312,581,808
		ST9160823ASG = 312,581,808
		ST9120823AS = 234,441,648
		ST9100821AS = 195,371,568
		ST980813AS = 156,301,488
		ST980813ASG = 156,301,488
62	Retired	0000H
63	Multiword DMA active and modes supported	xx07H
	(see note following this table)
64	Advanced PIO modes supported (modes 3 and 4 supported)	0003H
65	Minimum multiword DMA transfer cycle time per word	0078H
	(120 nsec)
66	Recommended multiword DMA transfer cycle time per word	0078H
	(120 nsec)
67	Minimum PIO cycle time without IORDY flow control	00F0H
	(240 nsec)
68	Minimum PIO cycle time with IORDY flow control	0078H
	(120 nsec)
69–74	ATA-reserved	0000H
75	Queue depth	0000H
76–79	ATA-reserved	0000H
80	Major version number	003EH
81	Minor version number	0000H
82	Command sets supported	306BH
83	Command sets supported	4001H
84	Command sets support extension	4000H
85	Command sets enabled	30xxH
86	Command sets enabled	0001H
87	Command sets enable extension	4000H
88	Ultra DMA support and current mode	xx3FH
	(see note following this table)
89	Security erase time	0000H

28 Momentus 7200.2 SATA Product Manual, Rev. E