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# DECISION COMPUTER INTERNATIONAL CO., LTD.
PCCOM 8-BIT ISA 8-PORT DB-37 RS-232/422
Card Type Serial
Chipset GoldStar
I/O Options Serial ports (8)
Data Bus 8-bit ISA
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|---------------------+--------+---------------------+-------|
| Serial ports via | J1 | Daisy chain | J3 |
| DB-37 port | | connector (see | |
| | | pinout below) | |
|---------------------+--------+---------------------+-------|
| Unidentified | J2 | | |
|------------------------------------------------------------|
| Note:Standard DB-25 serial ports are provided on an |
| included adapter cable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| J3 PINOUT |
|------------------------------------------------------------|
| Function | Pin | Function | Pin |
|------------------------+-----+-----------------------+-----|
| Daisy chain out | 1 | Daisy chain in | 3 |
|------------------------+-----+-----------------------+-----|
| Daisy chain out | 2 | Daisy chain in | 4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+-------+-----------|
| » | Interrupt master | JP1 | Closed |
|---+------------------------------------+-------+-----------|
| | Interrupt slave | JP1 | Open |
|---+------------------------------------+-------+-----------|
| » | Factory configured - do not alter | SW3/7 | On |
|---+------------------------------------+-------+-----------|
| » | Interrupt vector enabled | SW3/8 | Off |
|---+------------------------------------+-------+-----------|
| | Interrupt vector disabled | SW3/8 | On |
|------------------------------------------------------------|
| Note:Only one board per system should be set to |
| interrupt master. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE I/O ADDRESS |
|------------------------------------------------------------|
| Setting | SW1/1 | SW1/2 | SW1/3 | SW1/4 |
|------------+-----------+-----------+-----------+-----------|
| 000h | On | On | On | On |
|------------+-----------+-----------+-----------+-----------|
| 040h | On | On | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 080h | On | On | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 0C0h | On | On | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 100h | On | Off | On | On |
|------------+-----------+-----------+-----------+-----------|
| 140h | On | Off | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 180h | On | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 1C0h | On | Off | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 200h | Off | On | On | On |
|------------+-----------+-----------+-----------+-----------|
| 240h | Off | On | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 280h | Off | On | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 2C0h | Off | On | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 300h | Off | Off | On | On |
|------------+-----------+-----------+-----------+-----------|
| 340h | Off | Off | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 380h | Off | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 3C0h | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT |
|------------------------------------------------------------|
| Setting | SW2/1 | SW2/2 | SW2/3 | SW2/4 | SW2/5 | SW2/6 |
|---------+--------+--------+--------+-------+-------+-------|
| IRQ2 | On | Off | Off | Off | Off | Off |
|---------+--------+--------+--------+-------+-------+-------|
| IRQ3 | Off | On | Off | Off | Off | Off |
|---------+--------+--------+--------+-------+-------+-------|
| IRQ4 | Off | Off | On | Off | Off | Off |
|---------+--------+--------+--------+-------+-------+-------|
| IRQ5 | Off | Off | Off | On | Off | Off |
|---------+--------+--------+--------+-------+-------+-------|
| IRQ6 | Off | Off | Off | Off | On | Off |
|---------+--------+--------+--------+-------+-------+-------|
| IRQ7 | Off | Off | Off | Off | Off | On |
|---------+--------+--------+--------+-------+-------+-------|
| Slave | Off | Off | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT VECTOR |
|------------------------------------------------------------|
| Setting | SW3/1 | SW3/2 | SW3/3 | SW3/4 | SW3/5 | SW3/6 |
|---------+--------+--------+--------+-------+-------+-------|
| 000h | On | On | On | On | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| 010h | On | On | On | On | On | Off |
|---------+--------+--------+--------+-------+-------+-------|
| 020h | On | On | On | On | Off | On |
|---------+--------+--------+--------+-------+-------+-------|
| 030h | On | On | On | On | Off | Off |
|---------+--------+--------+--------+-------+-------+-------|
| 040h | On | On | On | Off | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| 3B0h | Off | Off | Off | On | Off | Off |
|---------+--------+--------+--------+-------+-------+-------|
| 3C0h | Off | Off | Off | Off | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| 3D0h | Off | Off | Off | Off | On | Off |
|---------+--------+--------+--------+-------+-------+-------|
| 3E0h | Off | Off | Off | Off | Off | On |
|---------+--------+--------+--------+-------+-------+-------|
| 3F0h | Off | Off | Off | Off | Off | Off |
|------------------------------------------------------------|
| Note:A total of 64 vector address settings are |
| available. The switches are a binary representation |
| of the decimal memory addresses. SW3/1 is the Most |
| Significant Bit and switch SW3/6 is the Least |
| Significant Bit. The switches have the following |
| decimal values: SW3/1=512, SW3/2=256, SW3/3=128, |
| SW3/4=64, SW3/5=32, SW3/6=16. Turn off the switches |
| and add the values of the switches that are off to |
| obtain the correct address. (Off=1, On=0) |
+------------------------------------------------------------+