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. |
|
|
|
| 5 | Ultra DMA mode 5 is supported. |
|
|
|
| 6 | Ultra DMA mode 6 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. |
|
|
|
| 11 | Ultra DMA mode 3 is currently active. |
|
|
|
| 12 | Ultra DMA mode 4 is currently active. |
|
|
|
| 13 | Ultra DMA mode 5 is currently active. |
|
|
|
| 14 | Ultra DMA mode 6 is currently active. |
|
|
|
40 | DiamondMax 21 Serial ATA Product Manual, Rev. C |
