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# UNIDENTIFIED
WA3-16 DISK CONTROLLER
Data Bus 16-bit ISA
Card Size Full height, three-quarters length
Hard Drives Two ST506/412(MFM) devices
Supported
Floppy Drives Two 360KB, 720KB, 1.2MB, or 1.44MB drives
Supported
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|----------------------+-------+---------------------+-------|
| 4-pin drive active | J1 | 34-pin control | J4 |
| LED | | cable connector - | |
| | | hard drive | |
|----------------------+-------+---------------------+-------|
| 20-pin data cable | J2 | 34-pin cable | J5 |
| connector - drive 2 | | connector - floppy | |
| | | drive | |
|----------------------+-------+---------------------+-------|
| 20-pin data cable | J3 | | |
| connector - drive 1 | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|-----------------------------------------+-------+----------|
| » | Write precompensation is 125ns | J6 | Open |
|---+-------------------------------------+-------+----------|
| | Write precompensation is 187ns | J6 | Closed |
|---+-------------------------------------+-------+----------|
| » | Standard floppy drives connected | J7 | Open |
|---+-------------------------------------+-------+----------|
| | Multi-speed floppy drives connected | J7 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE I/O ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | E1 |
|----------------------------+-------------------------------|
| » | Primary | Pins 2 & 3, 5 & 6 closed |
|---+------------------------+-------------------------------|
| | Secondary | Pins 1 & 2, 4 & 5 closed |
+------------------------------------------------------------+