Seagate 810 manual Xxxx H

26	Marathon 810 (ST9816AG) Product Manual, August 1995
Word	Description	ST9816AG
27–46	Drive model number: (40 ASCII characters,	ST9816AG
	padded with blanks to end of string)
47	Maximum sectors per interrupt on read/write	0010H
	multiple
48	Double word I/O (not supported)	0000H
	Standby timer (ATA compliant), IORDY
49	(supported/can be disabled), LBA mode	2F00H
	(supported), DMA mode (supported)
50	ATA reserved	0000H
51	PIO data-transfer cycle timing mode	0200H
52	DMA transfer cycle timing mode (not used)	0000H
53	Validity of words 54–58 and words 64–70	0003H
	(words may be valid)
54	Number of cylinders (current emulation mode)	xxxxH
55	Number of heads	xxxxH
	(current emulation mode)
56	Number of sectors per track	xxxxH
	(current emulation mode)
57–58	Number of sectors (current emulation mode)	xxxxH
59	Number of sectors transferred during a Read	01xxH
	Multiple or Write Multiple command
60–61	LBA sectors available (1,583,648)	182A20H
62	Single-word DMA active/DMA modes supported	0x07H
	(see Note following table)
63	Multiword DMA active/DMA modes supported	0x07H
	(see Note following table)
64	Advanced PIO modes supported (modes 3 and	0003H
	4 supported)
65	Minimum multiword DMA transfer cycle time	0078H
	per word (120 nsec)
66	Recommended multiword DMA transfer cycle	00B4H
	time per word (180 nsec)