| nr | name | description | manufacturer | 
| 7261 | HDC7261 | Hard disk controller | SMC | 
| 821821 | 82G1821 | IDE controller | Oki | 
| 82558 | 82C558M | H/D Controller-Viper | OPTi | 
| 8462 |  | 2,7 Data Synchronizer | NS | 
| 8463 |  | 2,7 RLL disk-signal Encoder/decoder (Endec) | NS | 
| 8464 |  | Disk Pulse Detector | NS | 
| 8465 |  | Data Separator | NS | 
| 8466 |  | Disk Data controller | NS | 
| 8468 |  | Disk Pulse Detector + Embedded Servo Dector | NS | 
| 8469 |  | Synchronizer/2,7 RLL disk-signal Encode/decoder (Endec) | NS | 
| 9224 | HDC9224 | Hard/floppy disk controller with tape back-up | SMC | 
| 9580 | Am9580 | Hard Disk controller (HDC) | AMD | 
| 9581 | Am9581 | Floppy/Hard Disk Data Separator | AMD |