WESTERN DIGITAL CORPORATION
WD1003S-WA4
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  | 
Data bus: 16-bit, ISA
Size: Full-length, half-height card
Hard drives supported: Two ST506/412 MFM drives
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB drives
| 
 CONNECTIONS  | |
| 
 Function  | 
 Location  | 
| 
 34-pin control cable connector-hard drive  | 
 CN1  | 
| 
 20-pin data cable connector-drive 0  | 
 CN2  | 
| 
 20-pin data cable connector-drive 1  | 
 CN3  | 
| 
 34-pin data cable connector-floppy drive  | 
 CN4  | 
| 
 4-pin connector-drive active LED  | 
 CN5  | 
| 
 DB-9 serial port 1 connector-external  | 
 CN6  | 
| 
 DB-25 parallel port connector-external  | 
 CN7  | 
| 
 USER CONFIGURABLE JUMPERS  | |||
| 
 Function  | 
 Location  | 
 Setting  | |
| » | 
 Floppy drive port address is 3F0-3F7h  | 
 JP1  | 
 pins 3 & 4 closed  | 
| 
 Floppy drive disabled  | 
 JP1  | 
 pins 2 & 3 closed  | |
| 
 Floppy drive port address is 370-377h  | 
 JP1  | 
 pins 1 & 2 closed  | |
| » | 
 Hard drive port address is 1F0-1F7h  | 
 JP2  | 
 pins 2 & 3 closed  | 
| 
 Hard drive port address is 170-177h  | 
 JP2  | 
 pins 2 & 3 closed  | |
| » | 
 Parallel port is set for LPT1  | 
 JP3 and JP3A  | 
 pins 1 & 2 closed  | 
| 
 Parallel port disabled  | 
 JP3 and JP3A  | 
 pins 2 & 3 closed  | |
| 
 Parallel port is set for LPT2  | 
 JP3 and JP3A  | 
 pins 3 & 4 closed  | |
| » | 
 Serial port is set for COM1  | 
 JP4 and JP4A  | 
 pins 1 & 2 closed  | 
| 
 Serial port is disabled  | 
 JP4 and JP4A  | 
 pins 2 & 3 closed  | |
| 
 Serial port is set for COM2  | 
 JP4 and JP4A  | 
 pins 3 & 4 closed  | |