Travelstar 80GN Hard Disk Drive Specification
112
Table 73: Identify device information. (Part 2 of 7)
* indicates the use of those parameters that are vendor specific.
Note 1. See Table 79: “Number of cylinders/heads/sectors by model.” on page 118.
Word
Content
Description
48
0000H
*
Capable of double word I/O, '0000'= cannot perform
49
0F00H
*
Capabilities, bit assignments:
15-14(=0) Reserved
13(=0) Standby timer value are vendor specific
12(=0) Reserved
11(=1) IORDY Supported
10(=1) IORDY can be disabled
9(=1) Reserved
8(=0) Reserved
7-0(=0) Reserved
50
4000H
Capabilities
15(=0) 0=the contents of word 50 are valid
14(=1) 1=the contents of word 50 are valid
13- 1(=0) Reserved
0(=0) 1=the device has a minimum Standby timer value that
is device specific
51
0200H
*
PIO data transfer cycle timing mode
52
0200H
*
DMA data transfer cycle timing mode Refer Word 62 and 63
53
0007H
Validity flag of the word
15- 3(=0) Reserved
2(=1) 1 Word 88 is Valid
1(=1) 1=Word 64-70 are Valid
0(=1) 1=Word 54-58 are Valid
54
XXXXH
Number of current cylinders
55
XXXXH
Number of current heads
56
XXXXH
Number of current sectors per track
57-58
XXXXH
Current capacity in sectors
Word 57 specifies the low word of the capacity
59
0XXXH
Current Multiple setting. Bit assignments:
15- 9(=0) Reserved
8 1= Multiple Sector Setting is Valid
7- 0 xxh = Current setting for number of sectors
60-61
(Note 1)
Total Number of User Addressable Sectors
Word 60 specifies the low word of the number
FFFFFFFh=the 48-bit native max address is greater than
268,435,455
62
0000H *
Reserved
63
0X07H
Multiword DMA Transfer Capability
15-11 (=0) Reserved
10 1=Multiword DMA mode 2 is selected
9 1=Multiword DMA mode 1 is selected
8 1=Multiword DMA mode 0 is selected
7- 3 (=0) Reserved
2 1=Multiword DMA mode 2 is supported
1 1=Multiword DMA mode 1 is supported
0 1=Multiword DMA mode 0 is supported
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