June 23, 2010 |
8.5 Write Sectors From Memory (FN 03h)
This function shall be used to transfer data from the host buffer beginning at the location specified by the contents of the ES:BX registers.
Entry |
|
|
AH | 03h |
|
AL | Number of sectors to write, shall be greater than 0 and less than 128 | |
CH | Low order 8 bits of the cylinder number | |
CL |
|
|
| Bit | Description |
| 7:6 | high order 2 bits of the cylinder |
| 5:0 | sector number |
DH Head number | ||
DL | BIOS device number | |
ES:BX | Pointer to source buffer in memory | |
Exit |
|
|
Carry Clear | Function completed without error | |
| AH | Shall be cleared to zero |
| AL | Number of sectors written |
Carry Set | Function completed with an error | |
| AH | Shall be set to the error code |
| AL | Vendor Specific |
Working Draft Enhanced Disk Drive - 4 | 33 |