| Function | Address | Description |
|---|---|---|
| DD_READ_SECTOR | 0163 | Read a sector |
Synopsys
Read a sector
Entry Parameters
| Register | Content |
|---|---|
| B | Page for 0xC000…0xFFFF |
| C | Unit 0 or 1 |
| D | Logical track, 0 base |
| E | logical sector, 0 base |
| HL | Address of buffer |
| IX | Address of XDPB |
Exit Parameters
- If OK:
- Carry true
- A corrupt
- Otherwise:
- Carry false
- A = Error code
- Always:
- BC DE HL IX corrupt, all other registers preserved.