UNIDENTIFIED
HDD/FDD CONTROLLER
| 
 Data Bus  | 
 16-bit ISA  | 
| 
 Card Size  | 
 Full height, half length  | 
| 
 Hard Drives Supported  | 
 Two ST506/412-MFM devices  | 
| 
 Floppy Drives Supported  | 
 Two 360KB, 720KB, 1.2MB, or 1.44MB drives  | 
| 
 CONNECTIONS  | |||
| 
 Function  | 
 Label  | 
 Function  | 
 Label  | 
| 
 20-pin cable connector - primary drive  | 
 J1  | 
 34-pin cable connector - floppy drive  | 
 J4  | 
| 
 20-pin data cable connector - secondary drive  | 
 J2  | 
 2-pin connector - drive active LED  | 
 LED  | 
| 
 34-pin cable connector - hard drive control  | 
 J3  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Setting  | 
 Label  | 
 Position  | |
| » | 
 Hard drive controller address set to 1F0h  | 
 J5  | 
 Pins 1 & 3 closed  | 
| 
 Hard drive controller address set to 170h  | 
 J5  | 
 Pins 3 & 5 closed  | |
| » | 
 Floppy controller address set to 3F2h  | 
 J5  | 
 Pins 2 & 4 closed  | 
| 
 Floppy controller address set to 372h  | 
 J5  | 
 Pins 4 & 6 closed  | |
| » | 
 Floppy drive speed set to 360RPM  | 
 J6  | 
 Open  | 
| 
 Floppy drive speed set to 300RPM  | 
 J6  | 
 Closed  | |