IBM IC25N020ATDA04 Hard Drive Specifications - Page 141

Word 48 49 50 51 52 53 54 55 56 57-58 59 60-61 62 63 Content 0000H 0F00H 0000H 0200H 0200H XXX7H XXXXH XXXXH XXXXH XXXXH 0XXXH Note 1 0000H XX07H 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. Bit assignments: 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) 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. Travelstar 48GH, 30GN & 15GN hard disk drive specifications 127