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