Maxtor DIAMONDMAX 60 Manual page 51

Hard disk drives
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- W O R D
CONTENT DESCRIPTION
50
Reserved
51 - 52
Obsolete
53
15 -3 = reserved
2, 1 = the fields supported in words 88 are valid, 0 = the fields supported in words 88 are not valid
1, 1 = the fields reports in words 64-70 are valid, 0 = the fields reports in words 64-70 are not valid
0, 1 = the fields reports in words 54-58 are valid, 0 = the fields reports in words 54-58 are not valid
54
Number of current logical cylinders
55
Number of current logical heads
56
Number of logical sectors per track
57 - 58
Current capacity in sectors
59
15-9 = reserved
8, 1 = multiple sector setting is valid
7-0 xxh = current setting for number of sectors that canbe transferred per interrupt on Read/Write Multiple
command
60 - 61
Total number of user addressable sectors (LBA mode only)
62
obsolete
63
1 5 -11 = reserved
10, 1 = Multi-word DMA mode 2 is selected, 0 = Multi-word DMA mode 2 is not selected
9 , 1 = Multi-word DMA mode 1 is selected, 0 = Multi-word DMA mode 1 is not selected
8 , 1 = Multi-word DMA mode 0 is selected, 0 = Multi-word DMA mode 0 is not selected
7-3, = reserved
2 , 1 = Multi-word DMA mode 2 and below are supported
1, 1 = Multi-word DMA mode 1 and below are supported
0 , 1 = Multi-word DMA mode 0 i s supported
7-0 = Multi=word DMA transfer modes supported
64
15-8 = reserved, 7-0 = advanced PIO transfer modes supported
65
Minimum multi-word DMA transfer cycle time per word (15-0 = cycle time in nanoseconds)
66
Manufacturer's recommeded multi-word DMA transfer cycle time (15-0 = cycle time in nanoseconds)
67
Minimum PIO transfer cycle time without flow control (15-0 = cycle time in nanoseconds)
68
Minimum PIO transfer cycle time with IORDY flow control (15-0 = cycle time in nanoseconds)
69-74
r eserved
75
Queue depth, 15 -3 = reserved, 4-0, maximum queue depth - 1
76-79
r eserved
80
Major version number
15, reserved, 14 -6 = reserved for ATA/ATAPI-14 to ATA/ATAPI-6 respectively
5, 1 = supports ATA/ATAPI-5
4, 1 = supports ATA/ATAPI-4
3, 1 = supports ATA-3
2, 1 = supports ATA-2
1, obsolete
0, reserved
81
Minor version number
82
Command set supported. If words 82 and 83 = 0000h or FFFFh command set notification not supported.
15, obsolete
14, 1 = supports the NOP command
13, 1 = supports the Read Buffer command
12, 1 = supports the Write Buffer command
11, obsolete
10, 1 = supports Host-Protected Area feature set
9, 1 = supports the Device Reset command
8, 1 = supports Service Interupt
7, 1 = supports Release Interupt
6, 1 = supports Look Ahead
5, 1 = supports Write Cache
4, shall be cleared to zero
3, 1 = supports the Power Management feature command
2, 1 = supports the Removable Media feature command
1, 1 = supports the Security Mode feature command
0, 1 = supports the SMART feature set
INTERFACE COMMANDS
7 – 11

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