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# HEDAKA
HED-821A
Data Bus 8/16 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 |
|----------------------+-------+---------------------+-------|
| 20-pin data cable | J1 | 34-pin control | U4 |
| connector - drive 0 | | cable connector - | |
| | | hard drive | |
|----------------------+-------+---------------------+-------|
| 20-pin data cable | J2 | 34-pin hard drive | U13 |
| connector - drive 1 | | control cable | |
|----------------------+-------+---------------------+-------|
| 4-pin drive active | J3 | | |
| LED | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|-----------------------------------------+-------+----------|
| » | Card uses primary hard drive | W2 | Open |
| | address | | |
|---+-------------------------------------+-------+----------|
| | Card uses secondary hard drive | W2 | Closed |
| | address | | |
|---+-------------------------------------+-------+----------|
| » | Card uses primary floppy address | W3 | Open |
|---+-------------------------------------+-------+----------|
| | Card uses secondary floppy address | W3 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY CONTROLLER CONFIGURATION |
|------------------------------------------------------------|
| Setting | W1 | W4 |
|------------------------+-----------------+-----------------|
| » | Enabled | Closed | Closed |
|----+-------------------+-----------------+-----------------|
| | Disabled | Open | Open |
+------------------------------------------------------------+