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# QUATECH, INC.
BCA-100
Card Type Serial/Parallel interface
Chipset/Controller Zilog
I/O Options Serial/Parallel port
Maximum DRAM N/A
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------------+----------+--------------+----------|
| DB-25 serial/parallel | CN1 | Standy clock | J4 |
| port | | output | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE MEMORY ADDRESS SELECT |
|------------------------------------------------------------|
| Address | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 |
|---------+--------+--------+--------+-------+-------+-------|
| 27Xh | Off | On | On | Off | Off | Off |
|---------+--------+--------+--------+-------+-------+-------|
| 2EXh | Off | On | Off | Off | Off | On |
|---------+--------+--------+--------+-------+-------+-------|
| 2FXh | Off | On | Off | Off | Off | Off |
|---------+--------+--------+--------+-------+-------+-------|
| 37Xh | Off | Off | On | Off | Off | Off |
|---------+--------+--------+--------+-------+-------+-------|
| 3EXh | Off | Off | Off | Off | Off | On |
|---------+--------+--------+--------+-------+-------+-------|
| 3FXh | Off | Off | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CLOCK SPEED SELECT |
|------------------------------------------------------------|
| Divide by | J7 |
|----------------------------+-------------------------------|
| 1 | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 2 | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTE/DCE CONFIGURATION |
|------------------------------------------------------------|
| Jumper | J5 (DTE) | J6 (DCE) |
|------------------+--------------------+--------------------|
| A | On | Off |
|------------------+--------------------+--------------------|
| B | On | Off |
|------------------+--------------------+--------------------|
| C | On | Off |
|------------------+--------------------+--------------------|
| D | On | Off |
|------------------+--------------------+--------------------|
| E | On | Off |
|------------------+--------------------+--------------------|
| F | Off | Off |
|------------------+--------------------+--------------------|
| G | On | On |
|------------------+--------------------+--------------------|
| H | On | Off |
|------------------+--------------------+--------------------|
| I | Off | Off |
|------------------+--------------------+--------------------|
| J | On | Off |
|------------------+--------------------+--------------------|
| K | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECT |
|------------------------------------------------------------|
| IRQ | J1/A | J1/B | J1/C | J1/D | J1/E | J1/F |
|------+--------+--------+--------+--------+--------+--------|
| IRQ2 | Closed | Open | Open | Open | Open | Open |
|------+--------+--------+--------+--------+--------+--------|
| IRQ3 | Open | Closed | Open | Open | Open | Open |
|------+--------+--------+--------+--------+--------+--------|
| IRQ4 | Open | Open | Closed | Open | Open | Open |
|------+--------+--------+--------+--------+--------+--------|
| IRQ5 | Open | Open | Open | Closed | Open | Open |
|------+--------+--------+--------+--------+--------+--------|
| IRQ6 | Open | Open | Open | Open | Closed | Open |
|------+--------+--------+--------+--------+--------+--------|
| IRQ7 | Open | Open | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RECEIVE CLOCK SOURCE |
|------------------------------------------------------------|
| Source | J3/A | J3/B | J3/C |
|---------------------+------------+------------+------------|
| TXCA clock | On | Off | Off |
|---------------------+------------+------------+------------|
| RXCi external clock | Off | On | Off |
|---------------------+------------+------------+------------|
| CLKA | Off | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRANSMIT CLOCK SOURCE |
|------------------------------------------------------------|
| Source | J2/A | J2/B | J2/C |
|---------------------+------------+------------+------------|
| RXCA clock | On | Off | Off |
|---------------------+------------+------------+------------|
| TXCi external clock | Off | On | Off |
|---------------------+------------+------------+------------|
| CLKB | Off | Off | On |
+------------------------------------------------------------+