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# BRAIN BOXES
AT ONE PORT RS232
Card Type Serial card
Chip Set Unidentified
Data Bus 8-bit ISA
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label |
|-------------------------------+----------------------------|
| 9-pin serial port | CN1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT ADDRESS SELECTION |
|------------------------------------------------------------|
| COM port | Address | IRQ | JP1 |
|--------------+-------------+---------+---------------------|
| | COM1 | 3F8h | IRQ4 | Open |
|---+----------+-------------+---------+---------------------|
| » | COM2 | 2F8h | IRQ3 | Pins 3 & 4 closed |
|---+----------+-------------+---------+---------------------|
| | COM3 | 3E8h | IRQ3 | Pins 5 & 6 closed |
|---+----------+-------------+---------+---------------------|
| | COM4 | 2E8h | IRQ3 | Pins 7 & 8 closed |
|---+----------+-------------+---------+---------------------|
| | COM5 | 1A0h | IRQ3 | Pins 9 & 10 closed |
|---+----------+-------------+---------+---------------------|
| | COM6 | 1A8h | IRQ3 | Pins 11 & 12 closed |
|---+----------+-------------+---------+---------------------|
| | COM7 | 1B0h | IRQ3 | Pins 13 & 14 closed |
|---+----------+-------------+---------+---------------------|
| | COM8 | 1B8h | IRQ3 | Pins 15 & 16 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT IRQ SELECTION |
|------------------------------------------------------------|
| IRQ | JP2 |
|----------------------------+-------------------------------|
| | IRQ2 | Pins 11 & 12 closed |
|---+------------------------+-------------------------------|
| » | IRQ3 | Pins 9 & 10 closed |
|---+------------------------+-------------------------------|
| | IRQ4 | Pins 7 & 8 closed |
|---+------------------------+-------------------------------|
| | IRQ5 | Pins 5 & 6 closed |
|---+------------------------+-------------------------------|
| | IRQ6 | Pins 3 & 4 closed |
|---+------------------------+-------------------------------|
| | IRQ7 | Pins 1 & 2 closed |
|---+------------------------+-------------------------------|
| | IRQ10 | Pins 13 & 14 closed |
|---+------------------------+-------------------------------|
| | IRQ11 | Pins 15 & 16 closed |
|---+------------------------+-------------------------------|
| | IRQ12 | Pins 17 & 18 closed |
|---+------------------------+-------------------------------|
| | IRQ14 | Pins 19 & 20 closed |
+------------------------------------------------------------+