SEA LEVEL SYSTEMS, INC.
ACB-530
Card Type | Serial card |
Chip Set | Unidentified |
I/O Options | Serial port |
Data Bus | 16-bit ISA |

CONNECTIONS | |
Function | Label |
Serial port | P1 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
| » | Factory configured – do not alter | E2 | Unidentified |
| » | Factory configured – do not alter | E9 | Unidentified |
| » | Factory configured – do not alter | SW1/8 | Unidentified |
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 channel B no DMA | Open | 1 & 2, 3 & 4 |
Channel A/channel 1, half duplex channel B no DMA | Open | 5 & 6, 7 & 8 |
Channel A/channel 2, half duplex channel B no DMA | Open | 9 & 10, 11 & 12 |
Channel A/channel 3, half duplex channel B no DMA | Open | 13 & 14, 15 & 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 channel A no DMA | Open | 1 & 2, 3 & 4 |
Channel B/channel 1, half duplex channel A no DMA | Open | 5 & 6, 7 & 8 |
Channel B/channel 2, half duplex channel A no DMA | Open | 9 & 10, 11 & 12 |
Channel B/channel 3, half duplex channel A no DMA | Open | 13 & 14, 15 & 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, half duplex | Open | 5 & 6, 7 & 8 | Open | 13 & 14, 15 & 16 |
Channel B/channel 3, half duplex | Open | 5 & 6, 7 & 8 | Open | 13 & 14, 15 & 16 |
Channel A/channel 0, half duplex | Open | 1 & 2, 3 & 4 | Open | 9 & 10, 11 & 12 |
Channel B/channel 2, half duplex | Open | 1 & 2, 3 & 4 | Open | 9 & 10, 11 & 12 |
Note: Pins designated should be in the closed position. | ||||
DMA SELECTION (FOUR CHANNELS FULL DUPLEX) | ||||
Setting | E4 | E5 | E6 | E7 |
Channel A/channel 1, receive data | 13 & 14, 15 & 16 | 5 & 6, 7 & 8 | 9 & 10, 11 & 12 | 1 & 2, 3 & 4 |
Channel A/channel 3, transmit data | 13 & 14, 15 & 16 | 5 & 6, 7 & 8 | 9 & 10, 11 & 12 | 1 & 2, 3 & 4 |
Channel B/channel 0, receive | 13 & 14, 15 & 16 | 5 & 6, 7 & 8 | 9 & 10, 11 & 12 | 1 & 2, 3 & 4 |
Channel B/channel 2, transmit | 13 & 14, 15 & 16 | 5 & 6, 7 & 8 | 9 & 10, 11 & 12 | 1 & 2, 3 & 4 |
Note: Pins designated should be in the closed position. | ||||
DMA SELECTION (CHANNEL A FULL DUPLEX) | ||
Setting | E4 | E5 |
Channel A/channel 1, receive data | 13 & 14, 15 & 16 | 5 & 6, 7 & 8 |
Channel A/channel 3, transmit data | 13 & 14, 15 & 16 | 5 & 6, 7 & 8 |
Note: Pins designated should be in the closed position. | ||
DMA SELECTION (CHANNEL B FULL DUPLEX) | ||
Setting | E6 | E7 |
Channel B/channel 1, receive data | 13 & 14, 15 & 16 | 5 & 6, 7 & 8 |
Channel B/channel 3, transmit data | 13 & 14, 15 & 16 | 5 & 6, 7 & 8 |
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 |