Seagate ST980817SM, ST980818AM, ST980818SM manual Word, Description, Value, xxxxH, xx07H, xx3FH

Word	Description	Value
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 Write	xxxxH
	Multiple command
60–61	Total number of user-addressable LBA sectors available	ST980817AM = 156,301,488
	(see Section 2.2 for related information)	ST980818AM = 156,301,488
		ST980817SM = 156,301,488
		ST980818SM = 156,301,488
		ST960817AM = 117,210,240
		ST960818AM = 117,210,240
		ST960817SM = 117,210,240
		ST960818SM = 117,210,240
		ST940817AM = 78,140,160
		ST940818AM = 78,140,160
		ST940817SM = 78,140,160
		ST940818SM = 78,140,160
		ST930817AM = 58,605,120
		ST930818AM = 58,605,120
		ST930817SM = 58,605,120
		ST930818SM = 58,605,120
62	Retired	0000H
63	Multiword DMA active and modes supported (see note following	xx07H
	this table)
64	Advanced PIO modes supported (modes 3 and 4 supported)	0003H
65	Minimum multiword DMA transfer cycle time per word (120	0078H
	nsec)
66	Recommended multiword DMA transfer cycle time per word	0078H
	(120 nsec)
67	Minimum PIO cycle time without IORDY flow control (240 nsec)	00F0H
68	Minimum PIO cycle time with IORDY flow control (120 nsec)	0078H
69–74	ATA-reserved	0000H
75	Queue depth	0000H
76–79	ATA-reserved	0000H
80	Major version number	007EH
81	Minor version number	0000H
82	Command sets supported	346BH
83	Command sets supported	7D01H
84	Command sets support extension	4003H
85	Command sets enabled	34xxH
86	Command sets enabled	3xxxH
87	Command sets enable extension	4003H
88	Ultra DMA support and current mode	xx3FH
	(see note following this table)

40 EE25.2 Series Product Manual, Rev. E