Bitfields for Phoenix Enhanced Disk Drive Spec drive options |
| Bit | Description | ||||||||
|---|---|---|---|---|---|---|---|---|---|
|
0 |
fast PIO enabled | ||||||||
|
1 |
fast DMA access enabled | ||||||||
|
2 |
block PIO (multi-sector transfers) enabled | ||||||||
|
3 |
CHS translation enabled | ||||||||
|
4 |
LBA translation enabled | ||||||||
|
5 |
removable media | ||||||||
|
6 |
ATAPI device (CD-ROM) | ||||||||
|
7 |
32-bit transfer mode | ||||||||
|
---v1.1+--- |
|||||||||
|
8 |
ATAPI device uses DRQ to signal readiness for packet command (must be 0 if bit 6 is 0) | ||||||||
|
10 - 9 |
translation type (must be 00 if bit 3 is 0)
|
||||||||
|
---v3.0--- |
|||||||||
|
11 |
Ultra DMA access enabled | ||||||||
|
15 - 12 |
reserved (0) | ||||||||
|
See Also: |