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# SEA LEVEL SYSTEMS, INC.
ACB-530
Card Type Serial card
Chip Set Unidentified
I/O Options Serial port
Data Bus 16-bit ISA
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label |
|-------------------------------+----------------------------|
| Serial port | P1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured – do not | E2 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured – do not | E9 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured – do not | SW1/8 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | E3 |
|----------------------------+-------------------------------|
| | 2 | Pins 1 & 2 closed |
|----+-----------------------+-------------------------------|
| | 3 | Pins 3 & 4 closed |
|----+-----------------------+-------------------------------|
| | 4 | Pins 5 & 6 closed |
|----+-----------------------+-------------------------------|
| » | 5 | Pins 7 & 8 closed |
|----+-----------------------+-------------------------------|
| | 7 | Pins 9 & 10 closed |
|----+-----------------------+-------------------------------|
| | 10 | Pins 11 & 12 closed |
|----+-----------------------+-------------------------------|
| | 11 | Pins 13 & 14 closed |
|----+-----------------------+-------------------------------|
| | 12 | Pins 15 & 16 closed |
|----+-----------------------+-------------------------------|
| | 15 | Pins 17 & 18 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT INTERRUPT MODE SELECTION |
|------------------------------------------------------------|
| Setting | E1 |
|-------------------------------+----------------------------|
| DMA terminal count IRQ | Pins 1 & 2 closed |
|-------------------------------+----------------------------|
| Single IRQ | Pins 3 & 4 closed |
|-------------------------------+----------------------------|
| Shared IRQ | Pins 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE I/O ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | SW1/1 | SW1/2 |SW1/3 |SW1/4 |SW1/5 |SW1/6 |SW1/7 |
|---------+-------+-------+------+------+------+------+------|
|» | 238 | Off | On | On | On | Off | Off | Off |
|--+------+-------+-------+------+------+------+------+------|
| | 280 | Off | On | Off | On | On | On | On |
|--+------+-------+-------+------+------+------+------+------|
| | 2A0 | Off | On | Off | On | Off | On | On |
|--+------+-------+-------+------+------+------+------+------|
| | 2E8 | Off | On | Off | Off | Off | On | Off |
|--+------+-------+-------+------+------+------+------+------|
| | 300 | Off | Off | On | On | On | On | On |
|--+------+-------+-------+------+------+------+------+------|
| | 328 | Off | Off | On | On | Off | On | Off |
|--+------+-------+-------+------+------+------+------+------|
| | 3E8 | Off | Off | Off | Off | Off | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA SELECTION |
|------------------------------------------------------------|
| Setting | E2 |
|-------------------------------+----------------------------|
| Software enabled channel A | Pins 1 & 2 closed |
|-------------------------------+----------------------------|
| Channel A always enabled | Pins 3 & 4 closed |
|-------------------------------+----------------------------|
| No DMA for channel A | Pins 5 & 6 closed |
|-------------------------------+----------------------------|
| Software enabled channel B | Pins 7 & 8 closed |
|-------------------------------+----------------------------|
| Channel B always enabled | Pins 9 & 10 closed |
|-------------------------------+----------------------------|
| No DMA for channel B | Pins 11 & 12 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA SELECTION (SINGLE CHANNEL A HALF DUPLEX) |
|------------------------------------------------------------|
| Setting | E4 | E5 |
|-------------------------------------+------+---------------|
| Channel A/channel 0, half duplex | Open | 1 & 2, 3 & 4 |
| channel B no DMA | | |
|-------------------------------------+------+---------------|
| Channel A/channel 1, half duplex | Open | 5 & 6, 7 & 8 |
| channel B no DMA | | |
|-------------------------------------+------+---------------|
| Channel A/channel 2, half duplex | Open | 9 & 10, 11 & |
| channel B no DMA | | 12 |
|-------------------------------------+------+---------------|
| Channel A/channel 3, half duplex | Open | 13 & 14, 15 & |
| channel B no DMA | | 16 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA SELECTION (SINGLE CHANNEL B HALF DUPLEX) |
|------------------------------------------------------------|
| Setting | E6 | E7 |
|-------------------------------------+------+---------------|
| Channel B/channel 0, half duplex | Open | 1 & 2, 3 & 4 |
| channel A no DMA | | |
|-------------------------------------+------+---------------|
| Channel B/channel 1, half duplex | Open | 5 & 6, 7 & 8 |
| channel A no DMA | | |
|-------------------------------------+------+---------------|
| Channel B/channel 2, half duplex | Open | 9 & 10, 11 & |
| channel A no DMA | | 12 |
|-------------------------------------+------+---------------|
| Channel B/channel 3, half duplex | Open | 13 & 14, 15 & |
| channel A no DMA | | 16 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA SELECTION (TWO CHANNELS HALF DUPLEX) |
|------------------------------------------------------------|
| Setting | E4 | E5 | E6 | E7 |
|-----------------------+------+--------+------+-------------|
| Channel A/channel 1, | Open | 5 & 6, | Open | 13 & 14, 15 |
| half duplex | | 7 & 8 | | & 16 |
|-----------------------+------+--------+------+-------------|
| Channel B/channel 3, | Open | 5 & 6, | Open | 13 & 14, 15 |
| half duplex | | 7 & 8 | | & 16 |
|-----------------------+------+--------+------+-------------|
| Channel A/channel 0, | Open | 1 & 2, | Open | 9 & 10, 11 |
| half duplex | | 3 & 4 | | & 12 |
|-----------------------+------+--------+------+-------------|
| Channel B/channel 2, | Open | 1 & 2, | Open | 9 & 10, 11 |
| half duplex | | 3 & 4 | | & 12 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA SELECTION (FOUR CHANNELS FULL DUPLEX) |
|------------------------------------------------------------|
| Setting | E4 | E5 | E6 | E7 |
|-------------------+-----------+--------+----------+--------|
| Channel A/channel | 13 & 14, | 5 & 6, | 9 & 10, | 1 & 2, |
| 1, receive data | 15 & 16 | 7 & 8 | 11 & 12 | 3 & 4 |
|-------------------+-----------+--------+----------+--------|
| Channel A/channel | 13 & 14, | 5 & 6, | 9 & 10, | 1 & 2, |
| 3, transmit data | 15 & 16 | 7 & 8 | 11 & 12 | 3 & 4 |
|-------------------+-----------+--------+----------+--------|
| Channel B/channel | 13 & 14, | 5 & 6, | 9 & 10, | 1 & 2, |
| 0, receive | 15 & 16 | 7 & 8 | 11 & 12 | 3 & 4 |
|-------------------+-----------+--------+----------+--------|
| Channel B/channel | 13 & 14, | 5 & 6, | 9 & 10, | 1 & 2, |
| 2, transmit | 15 & 16 | 7 & 8 | 11 & 12 | 3 & 4 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA SELECTION (CHANNEL A FULL DUPLEX) |
|------------------------------------------------------------|
| Setting | E4 | E5 |
|--------------------------+------------------+--------------|
| Channel A/channel 1, | 13 & 14, 15 & 16 | 5 & 6, 7 & 8 |
| receive data | | |
|--------------------------+------------------+--------------|
| Channel A/channel 3, | 13 & 14, 15 & 16 | 5 & 6, 7 & 8 |
| transmit data | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA SELECTION (CHANNEL B FULL DUPLEX) |
|------------------------------------------------------------|
| Setting | E6 | E7 |
|--------------------------+------------------+--------------|
| Channel B/channel 1, | 13 & 14, 15 & 16 | 5 & 6, 7 & 8 |
| receive data | | |
|--------------------------+------------------+--------------|
| Channel B/channel 3, | 13 & 14, 15 & 16 | 5 & 6, 7 & 8 |
| transmit data | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA SELECTION (NO DMA SELECTED) |
|------------------------------------------------------------|
| Setting | E4 | E5 | E6 | E7 |
|------------+-----------+-----------+-----------+-----------|
| No DMA | Open | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRANSMIT CLOCK SELECTION |
|------------------------------------------------------------|
| Setting | E8 |
|---------------------------------+--------------------------|
| Channel A RTS enabled (RS-485) | Pins 1 & 2 closed |
|---------------------------------+--------------------------|
| Transmit clock output channel A | Pins 3 & 4 closed |
|---------------------------------+--------------------------|
| Transmit clock input channel A | Pins 5 & 6 closed |
|---------------------------------+--------------------------|
| Channel B RTS enabled (RS-485) | Pins 7 & 8 closed |
|---------------------------------+--------------------------|
| Transmit clock output channel B | Pins 9 & 10 closed |
|---------------------------------+--------------------------|
| Transmit clock input channel B | Pins 11 & 12 closed |
+------------------------------------------------------------+