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# UNIDENTIFIED
AT BUS/FLOPPY DISK CONTROLLER
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 16-bit ISA |
|-------------------+----------------------------------------|
| Size: | Three/quarter-length, full-height card |
|-------------------+----------------------------------------|
| Hard drive | Two IDE (AT) interface drives |
| supported: | |
|-------------------+----------------------------------------|
| Floppy drives | Two 360KB, 720KB, 1.2MB, or 1.44MB |
| supported: | drives |
+------------------------------------------------------------+
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-----------------------------------------------+------------|
| 40-pin IDE (AT) interface connector | J1 |
|-----------------------------------------------+------------|
| 34-pin control cable connector - floppy drive | J4 |
|-----------------------------------------------+------------|
| 4-pin connector - drive active LED | J6 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| » Function | Location | Setting |
|----------------------------------+---------------+---------|
| » | IRQ14 enabled | J2/pins 2 & 3 | closed |
|---+------------------------------+---------------+---------|
| | XIRQ14 enabled | J2/pins 1 & 2 | closed |
|---+------------------------------+---------------+---------|
| » | Factory configured - do not | J3 | N/A |
| | alter | | |
|---+------------------------------+---------------+---------|
| » | Factory setting | J7/pins 2 & 3 | closed |
|---+------------------------------+---------------+---------|
| | Two speed spindle type drive | J7/pins 1 & 2 | closed |
|---+------------------------------+---------------+---------|
| » | Hard drive enabled | J8/pins 1 & 2 | closed |
|---+------------------------------+---------------+---------|
| | Hard drive disabled | J8/pins 2 & 3 | closed |
+------------------------------------------------------------+