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28 U4 Family Product Manual, Rev. D
91–92 ATA-reserved
0000
H
93 Hardware Reset Value
(see description following this table)
4000
H
94–127 ATA-reserved
0000
H
128 Security Status
0001
H
129–159 Seagate-reserved
xxxx
H
160–255 ATA-reserved
0000
H
Note. See the bit descriptions below for words, 63, 88, and 93 of the
Identify Drive data:
Description (if bit is set to 1)
Bit Word 63
0 Multiword DMA mode 0 is supported.
1 Multiword DMA mode 1 is supported.
2 Multiword DMA mode 2 is supported.
8 Multiword DMA mode 0 is currently active.
9 Multiword DMA mode 1 is currently active.
10 Multiword DMA mode 2 is currently active.
Bit Word 88
0 Ultra DMA mode 0 is supported.
1 Ultra DMA mode 1 is supported.
2 Ultra DMA mode 2 is supported.
3 Ultra DMA mode 3 is supported.
4 Ultra DMA mode 4 is supported.
8 Ultra DMA mode 0 is currently active.
9 Ultra DMA mode 1 is currently active.
10 Ultra DMA mode 2 is currently active.
Word Description Value