DD_L_WRITE
Low level uPD765A write command
Table of Contents
| Function |
Address | Description |
| DD_L_WRITE |
0193 | Low level uPD765A write command |
Synopsys
Low level uPD765A write command.
- Write data.
- Write deleted data.
- Format a track.
- Scan equal.
- Scan low or Equal.
- Writes commands.
- Writes data.
- Reads results.
- Motor must be running.
Entry Parameters
| Register |
Content |
| HL |
Address of parameter block |
Exit Parameters
- HL = Address of result buffer in page 7
- Always:
- AF BC DE IX corrupt, all other registers preserved.
Parameter Block Format
| Bytes |
Length |
Content |
| 0 | 0 | 1 |
Page for 0xC000…0xFFFF |
| 1 | 2 | 2 |
Address of buffer |
| 3 | 4 | 2 |
Number of bytes to transfer |
| 5 | 5 | 1 |
Number of command bytes n |
| 6 | 5+n | n |
Command bytes |