4.5 ATA Commands
Table 4.27 Device parameter information (5/6)
Word | Value | Bits | Description |
|
|
|
|
87 | 4000h |
| Command set supported and whether the function is enabled or |
|
|
| disabled |
|
|
| (A value of less than 1 indicates that the command is supported |
|
|
| and enabled.) |
|
| 15 | 0b |
|
| 14 | 1b |
|
| Reserved | |
|
|
|
|
88 | 0007h | Reserved (0b) | |
| (Default value) | 12 | Ultra DMA transfer mode 4 is selected |
|
| 11 | Ultra DMA transfer mode 3 is selected |
|
|
|
|
|
| 10 | Ultra DMA transfer mode 2 is selected |
|
| 9 | Ultra DMA transfer mode 1 is selected |
|
| 8 | Ultra DMA transfer mode 0 is selected |
|
|
|
|
|
| Reserved (0b) | |
|
| 4 | Ultra DMA transfer modes 4 or under are supported (0b) |
|
| 3 | Ultra DMA transfer modes 3 or under are supported (0b) |
|
|
|
|
|
| 2 | Ultra DMA transfer modes 2 or under are supported (1b) |
|
| 1 | Ultra DMA transfer modes 1 or under are supported (1b) |
|
| 0 | Ultra DMA transfer modes 0 is supported (1b) |
|
|
|
|
0000h |
| Reserved | |
|
|
|
|
93 | xxxxh | 15 | 0b |
|
| 14 | 1b |
|
| 13 | 0b |
|
|
| - for device 0 |
|
|
|
|
|
| 0b | |
|
| 7 | 0b |
|
| 6 | 1b (Responds when device 1 is selected) |
|
|
|
|
|
| 5 | If DASP- is detected: 1b If not: 0b |
|
| 4 | If PDIAG- is detected: 1b If not: 0b |
|
| 3 | If diagnosis ends normally: 1b If an error occurred: 0b |
|
|
|
|
|
| 11b | |
|
| 0 | 1b |
|
|
|
|