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