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# DTK COMPUTER, INC.
MINI 286 COURIER I/O CARD
Card Type Multi I/O card
Chipset/Controller Unknown
I/O Options Parallel port, serial ports (2)
Maximum DRAM N/A
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+--------------+---------------+-------------|
| Parallel port | CN1 | Serial port 2 | CN3 |
|---------------+--------------+---------------+-------------|
| Serial port 1 | CN2 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT CONFIGURATION |
|------------------------------------------------------------|
| Port 1 | Port 2 (CN3) | JP2 | JP1 |
| (CN2) | | | |
|------------+--------------+-------------------+------------|
| » | COM1 | COM2 | Pins 2 & 3, 4 & 5 | Pins 1 & 2 |
| | | | closed | closed |
|----+-------+--------------+-------------------+------------|
| | COM2 | COM1 | Pins 1 & 2, 5 & 6 | Pins 1 & 2 |
| | | | closed | closed |
|----+-------+--------------+-------------------+------------|
| | COM3 | COM4 | Pins 2 & 3, 4 & 5 | Pins 3 & 4 |
| | | | closed | closed |
|----+-------+--------------+-------------------+------------|
| | COM4 | COM3 | Pins 1 & 2, 5 & 6 | Pins 3 & 4 |
| | | | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT INTERRUPT SELECT |
|------------------------------------------------------------|
| Port 1 (CN2) | Port 2 (CN3) | JP3 |
|----------------+---------------+---------------------------|
| » | IRQ4 | IRQ3 | Pins 1 & 2, 5 & 6 closed |
|-----+----------+---------------+---------------------------|
| | IRQ3 | IRQ4 | Pins 2 & 3, 4 & 5 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT INTERRUPT SELECT |
|------------------------------------------------------------|
| IRQ | System Type | JP4 | JP5 |
|-------------+---------------+----------+-------------------|
| » | IRQ7 | AT compatible | Open | Pins 3 & 4 closed |
|---+---------+---------------+----------+-------------------|
| | IRQ5 | AT compatible | Closed | Pins 1 & 2 closed |
|---+---------+---------------+----------+-------------------|
| | IRQ7 | XT compatible | Open | Pins 3 & 4 closed |
|---+---------+---------------+----------+-------------------|
| | IRQ7 | XT compatible | Closed | Pins 3 & 4 closed |
+------------------------------------------------------------+