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# WESTERN DIGITAL CORPORATION
WDAT-240
+------------------------------------------------------------+
+------------------------------------------------------------+
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
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-------------------------------------------------+----------|
| 34-pin data cable connector-floppy drive | J1 |
|-------------------------------------------------+----------|
| 40-pin AT Interface (IDE) control cable | J2 |
| connector-internal | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIRQ14 SIGNAL SELECT |
|------------------------------------------------------------|
| Function | Jumper W1 | Jumper W1A |
|-----------------------------------+-----------+------------|
| » | DIRQ14 signal passed to host | open | closed |
| | computer | | |
|---+-------------------------------+-----------+------------|
| | Conner CP342/CP3022 in true | closed | open |
| | IBM AT | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|---------------------------------------+----------+---------|
| » | Floppy controller enabled | W2 | closed |
|---+-----------------------------------+----------+---------|
| | Floppy controller disabled | W2 | open |
|---+-----------------------------------+----------+---------|
| » | Floppy drive port address is | W2A | open |
| | 3F0-3F7h | | |
|---+-----------------------------------+----------+---------|
| | Floppy drive port address is | W2A | closed |
| | 370-377h | | |
|---+-----------------------------------+----------+---------|
| » | Single speed floppy drive | W3 | open |
|---+-----------------------------------+----------+---------|
| | Dual-speed floppy drive | W3 | closed |
|---+-----------------------------------+----------+---------|
| » | Logic ground independent of | W4 | open |
| | chassis | | |
|---+-----------------------------------+----------+---------|
| | Logic ground connected to chassis | W4 | closed |
+------------------------------------------------------------+