00h
BYTE
01h
BYTE
02h
WORD
04h
DWORD
transfer
buffer08h
QWORD
10h
QWORD
Format of disk address packet |
| Offset | Size | Description |
|---|---|---|
|
00h |
BYTE |
size of packet (10h or 18h) |
|
01h |
BYTE |
reserved (0) |
|
02h |
WORD |
number of blocks to transfer (max 007Fh for Phoenix EDD) |
|
04h |
DWORD |
transfer
buffer |
|
08h |
QWORD |
starting absolute block number (for non-LBA devices, compute as (Cylinder * NumHeads + SelectedHead) * SectorPerTrack + SelectedSector - 1) |
|
10h |
QWORD |
(EDD-3.0, optional) 64-bit flat address of transfer buffer; used if DWORD at 04h is FFFFh:FFFFh |