Seagate ST9655 Series Product Manual page 33

Ata interface drives
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ST9655 Family Product Manual, Rev. A
* DMA mode settings are reflected in the following bit settings for words
62 and 63. Only one mode at a time should be set as currently active.
Word
Bit
Description (if bit is set to 1)
62
0
Single-word DMA mode 0 available
62
1
Single-word DMA mode 1 available
62
2
Single-word DMA mode 2 available
62
8
Single-word DMA mode 0 currently active
62
9
Single-word DMA mode 1 currently active
62
10
Single-word DMA mode 2 currently active
63
0
Multiword DMA mode 0 available
63
1
Multiword DMA mode 1 available
Multiword DMA mode 0 currently active (default)
63
8
63
9
Multiword DMA mode 1 currently active
25

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