WESTERN DIGITAL CORPORATION
WDAT-440
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  | 
Data bus: 16-bit, PC/AT
Size: Half-length, full-height card
Hard drives supported: Two IDE (AT) Interface drives
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB
Special features: Two serial and one parallel port
| 
 CONNECTIONS  | |
| 
 Function  | 
 Location  | 
| 
 34-pin data cable connector-floppy drive  | 
 J1  | 
| 
 25-pin parallel port-external  | 
 J2  | 
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 40-pin IDE (AT) Interface control cable connector-internal  | 
 J5  | 
| 
 4 pin connector drive- active LED  | 
 J6  | 
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 9-pin serial port-external  | 
 J8  | 
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 DIRQ14 SIGNAL SELECT  | |||
| 
 DIRQ  | 
 W3  | 
 W3  | |
| » | 
 DIRQ14 signal passed to host computer  | 
 pins 1 & 2 open  | 
 pins 2 & 3 closed  | 
| 
 Conner CP342/CP3022 in true IBM AT  | 
 pins 1 & 2 closed  | 
 pins 2 & 3 open  | |
WESTERN DIGITAL CORPORATION
WDAT-440
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Location  | 
 Setting  | |
| » | 
 Floppy controller enabled  | 
 W4  | 
 closed  | 
| 
 Floppy controller disabled  | 
 W4  | 
 open  | |
| » | 
 Floppy drive port address is 3F0-3F7h  | 
 W4  | 
 open  | 
| 
 Floppy drive port address is 370-377h  | 
 W4  | 
 closed  | |
| » | 
 Single speed floppy drive  | 
 W5  | 
 open  | 
| 
 Dual speed floppy drive  | 
 W5  | 
 closed  | |
| » | 
 Logic ground independent of chassis  | 
 W6  | 
 open  | 
| 
 Logic ground connected to chassis  | 
 W6  | 
 closed  | |
| » | 
 Printer Interrupt is IRQ7  | 
 W7  | 
 pins 3 & 4 closed  | 
| 
 Printer Interrupt is IRQ5  | 
 W7  | 
 pins 1 & 2 closed  | |
| » | 
 COM2 Interrupt is IRQ3  | 
 W7  | 
 pins 5 & 6 closed  | 
| 
 COM2 Interrupt is IRQ4  | 
 W7  | 
 pins 5 & 7 closed  | |
| 
 COM1 Interrupt is IRQ3  | 
 W7  | 
 pins 6 & 8 closed  | |
| 
 COM1 Interrupt is IRQ4  | 
 W7  | 
 pins 7 & 8 closed  | |
| » | 
 Printer enabled  | 
 W8/jumper 1  | 
 closed  | 
| 
 Printer disabled  | 
 W8/jumper 1  | 
 open  | |
| » | 
 Printer address, LPT1 = 378-37Fh  | 
 W8/jumper 2  | 
 open  | 
| 
 Printer address, LPT2 = 278-27Fh  | 
 W8/jumper 2  | 
 closed  | |
| » | 
 External Serial Port = COM1 (3F8-3FFh)  | 
 W8/jumper 3  | 
 closed  | 
| 
 External Serial Port = COM3 (3E8-3EFh)  | 
 W8/jumper 4  | 
 closed  | |
| » | 
 Internal Serial Port = COM2 (2F8-2FFh)  | 
 W8/jumper 5  | 
 closed  | 
| 
 Internal Serial Port = COM4 (2E8-2EFh)  | 
 W8/jumper 6  | 
 closed  | |
| » | 
 Enable intelligent drive interface  | 
 W9  | 
 closed  | 
| 
 Disable intelligent drive interface  | 
 W9  | 
 open  | |