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# UNIDENTIFIED
MAGIC I/O PM-540G
+------------------------------------------------------------+
+------------------------------------------------------------+
Data bus: 16-bit, ISA
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 |
|---------------------------------------------+--------------|
| 4-pin connector-drive active LED | J1 |
|---------------------------------------------+--------------|
| 40-pin IDE Interface (AT) connector | J2 |
|---------------------------------------------+--------------|
| 34-pin control cable connector-floppy drive | J3 |
|---------------------------------------------+--------------|
| 9-pin serial port 2 (COM2)-internal | J4 |
|---------------------------------------------+--------------|
| 9-pin serial port 1 (COM1)-external | J5 |
|---------------------------------------------+--------------|
| 25-pin parallel port-external | J6 |
|---------------------------------------------+--------------|
| 15-pin game port-internal | J7 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|-------------------------------+--------------+-------------|
| » | Floppy drive enabled | JP1 and JP2 | closed |
|---+---------------------------+--------------+-------------|
| | Floppy drive disabled | JP1 and JP2 | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT (CN6) CONFIGURATION |
|------------------------------------------------------------|
| LPT | JP3/pins 1 & 2 | JP3/pins 3 & 4 |
|-----------------------+------------------+-----------------|
| » | LPT1 (378-37Fh) | open | closed |
|---+-------------------+------------------+-----------------|
| | LPT2 (278-27Fh) | closed | open |
|---+-------------------+------------------+-----------------|
| | Disabled | open | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 (CN4) CONFIGURATION |
|------------------------------------------------------------|
| COM | JP3/pins 5 & 6 | JP3/pins 7 & 8 |
|-----------------------+------------------+-----------------|
| » | COM2 (2F8-2FFh) | open | closed |
|---+-------------------+------------------+-----------------|
| | COM4 (2E8-2EFh) | closed | open |
|---+-------------------+------------------+-----------------|
| | COM3 (3E8-3EFh) | closed | closed |
|---+-------------------+------------------+-----------------|
| | Disabled | open | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 (CN5) CONFIGURATION |
|------------------------------------------------------------|
| COM | JP3/pins 9 & 10 | JP3/pins 11 & 12 |
|----------------------+------------------+------------------|
| » | COM1 (3F8-3FFh) | open | closed |
|---+------------------+------------------+------------------|
| | COM3 (3E8-3EFh) | closed | open |
|---+------------------+------------------+------------------|
| | COM4 (2E8-2EFh) | closed | closed |
|---+------------------+------------------+------------------|
| | Disabled | open | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 (CN5) INTERRUPT REQUEST |
|------------------------------------------------------------|
| IRQ | JP4/pins 1 & 2 | JP4/pins 3 & 4 | JP4/pins 5 & |
| | | | 6 |
|----------+----------------+----------------+---------------|
| » | IRQ4 | closed | open | open |
|---+------+----------------+----------------+---------------|
| | IRQ5 | open | closed | open |
|---+------+----------------+----------------+---------------|
| | IRQ9 | open | open | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 (CN4) INTERRUPT REQUEST |
|------------------------------------------------------------|
| IRQ | JP4/pins 7 & 8 | JP4/pins 9 & 10 | JP4/pin 11 & |
| | | | 12 |
|----------+----------------+-----------------+--------------|
| » | IRQ3 | closed | open | open |
|---+------+----------------+-----------------+--------------|
| | IRQ9 | open | closed | open |
|---+------+----------------+-----------------+--------------|
| | IRQ5 | open | open | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT (CN6) INTERRUPT REQUEST |
|------------------------------------------------------------|
| IRQ | JP4/pins 13 & 14 | JP4/pins 15 & 16 |
|------------------+--------------------+--------------------|
| » | IRQ7 | open | closed |
|---+--------------+--------------------+--------------------|
| | IRQ5 | closed | open |
|---+--------------+--------------------+--------------------|
| | Disabled | open | open |
+------------------------------------------------------------+