Figure 86. Identify Device Information (2 Of 7) - IBM IC25N020ATDA04 - Travelstar 20 GB Hard Drive Specifications

Word Content
48 0000H
49 0F00H
50 0000H
51 0200H
52 0200H
53 XXX7H
54 XXXXH
55 XXXXH
56 XXXXH
57-58 XXXXH
59 0XXXH
60-61 Note 1
62 0000H
63 XX07H

Figure 86. Identify device information (2 of 7)

Note. The ' * ' mark in the 'Content' field indicates the use of those parameters that are vendor specific.
Note 1. See Figure 87 on page 133.
Description
* Capable of double word I/O, '0000'= cannot perform
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
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
PIO data transfer cycle timing mode
*
DMA data transfer cycle timing mode
Refer Word 62 and 63
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
Number of current cylinders
Number of current heads
Number of current sectors per track
Current capacity in sectors
Word 57 specifies the low word of the capacity
Current Multiple setting.
15- 9(=0) Reserved
8 1= Multiple Sector Setting is Valid
7- 0 xxh = Current setting for number of
sectors
Total Number of User Addressable Sectors
Word 60 specifies the low word of the number
*
Reserved
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- 0(=7) Multiword DMA transfer modes supported
(support mode 0, 1 and 2)
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
Bit assignments:
127