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# UNIDENTIFIED
PIO-III
Card Type Multi-I/O
Chipset/Controller Unidentified
I/O Options Game port, Parallel port, Serial ports (2)
Maximum DRAM N/A
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| Game port | CN1 | Serial port 2 | CN4 |
|---------------+----------+----------------------+----------|
| Parallel port | CN2 | Control cable | CN4 |
| | | connector - floppy | |
| | | drive | |
|---------------+----------+----------------------+----------|
| Serial port 1 | CN3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CLOCK ADDRESS |
|------------------------------------------------------------|
| Address | JP3 |
|----------------------------+-------------------------------|
| » 240h | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 340h | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CLOCK INTERRUPT |
|------------------------------------------------------------|
| Setting | JP6 |
|----------------------------+-------------------------------|
| » Enabled | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| Disabled | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORTS 1 & 2 INTERRUPT SELECT |
|------------------------------------------------------------|
| Port 1 | Port 2 | JP7 | JP8 |
|----------+----------+-------------------+------------------|
| » IRQ4 | IRQ3 | Pins 1 & 2 closed | Pins 2 & 3 |
| | | | closed |
|----------+----------+-------------------+------------------|
| IRQ3 | IRQ4 | Pins 2 & 3 closed | Pins 1 & 2 |
| | | | closed |
|----------+----------+-------------------+------------------|
| IRQ3 | Disabled | All pins open | Pins 1 & 2 |
| | | | closed |
|----------+----------+-------------------+------------------|
| IRQ4 | Disabled | All pins open | Pins 2 & 3 |
| | | | closed |
|----------+----------+-------------------+------------------|
| Disabled | IRQ3 | Pins 1 & 2 closed | All pins open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORTS 1 & 2 INTERRUPT SELECT |
|------------------------------------------------------------|
| Port 1 | Port 2 | JP7 | JP8 |
|------------+-----------+-------------------+---------------|
| Disabled | IRQ4 | Pins 2 & 3 closed | All pins open |
|------------+-----------+-------------------+---------------|
| Disabled | Disabled | All pins open | All pins open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORTS 1 & 2 INTERRUPT SELECT |
|------------------------------------------------------------|
| Port 1 | Port 2 | J3 | J4 |
|----------+---------+-------------------+-------------------|
| » IRQ4 | IRQ3 | Pins 2 & 3 closed | Pins 1 & 2 closed |
|----------+---------+-------------------+-------------------|
| IRQ3 | IRQ4 | Pins 1 & 2 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 & 2 CONFIGURATIONS |
|------------------------------------------------------------|
| PORT 1 | PORT 2 | SW1/1 | SW1/2 | SW1/3 |
|-------------+------------+-----------+----------+----------|
| » COM1/3F8h | COM2/2F8h | On | On | On |
|-------------+------------+-----------+----------+----------|
| COM1/3F8h | COM3/2E8h | Off | On | On |
|-------------+------------+-----------+----------+----------|
| COM1/3F8h | COM4/3D8h | On | Off | On |
|-------------+------------+-----------+----------+----------|
| COM2/2F8h | COM3/2E8h | Off | Off | On |
|-------------+------------+-----------+----------+----------|
| COM2/2F8h | COM4/3D8h | On | On | Off |
|-------------+------------+-----------+----------+----------|
| COM3/2E8h | COM4/3D8h | Off | On | Off |
|-------------+------------+-----------+----------+----------|
| Disabled | Disabled | On | Off | Off |
|-------------+------------+-----------+----------+----------|
| Disabled | Disabled | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT CONFIGURATION |
|------------------------------------------------------------|
| LPT/Address | SW1/4 | SW1/5 |
|--------------------+----------------+----------------------|
| » LPT1/378h | On | On |
|--------------------+----------------+----------------------|
| LPT2/278h | Off | On |
|--------------------+----------------+----------------------|
| LPT3/3BCh | On | Off |
|--------------------+----------------+----------------------|
| Disabled | Off | Off |
+------------------------------------------------------------+