SEA LEVEL SYSTEMS, INC. ACB-IV Card Type Serial card Chip Set Unidentified I/O Options Serial port Data Bus 8-bit ISA [Image] CONNECTIONS Function Label Serial port P1 USER CONFIGURABLE SETTINGS Function Label Position » Factory configured – do not alter E4 Unidentified » Factory configured – do not alter E6 Unidentified » Factory configured – do not alter E7 Unidentified » Factory configured – do not alter E9 Unidentified » Factory configured – do not alter E10 Unidentified » Factory configured – do not alter SW2 Unidentified SERIAL PORT 1 SELECTION Setting E2 Enabled (RS-485 only) Pins 1 & 2 closed Transmit clock input (TXC in on pins Pins 3 & 4 closed 12 & 15 of P1) Transmit clock output (TXC out on Pins 5 & 6 closed pins 12 & 15 of P1) Receive clock input (RXC in on pins Pins 7 & 8 closed 9 & 17) Not used Pins 9 & 10 open Transmit clock output (TXC out on Pins 11 & 12 closed pins 12 & 15 of P1) Transmit clock output (TXC out on Pins 13 & 14 closed pins 12 & 15 of P1) Not used Pins 15 & 16 open Not used Pins 17 & 18 open SERIAL PORT 2 SELECTION Setting E1 Enabled (RS-485 only) Pins 1 & 2 closed Transmit clock input (TXC in on pins Pins 3 & 4 closed 12 & 15 of P1) Transmit clock output (TXC out on Pins 5 & 6 closed pins 12 & 15 of P1) Receive clock input (RXC in on pins Pins 7 & 8 closed 9 & 17) Not used Pins 9 & 10 open Transmit clock output (TXC out on Pins 11 & 12 closed pins 12 & 15 of P1) Transmit clock output (TXC out on Pins 13 & 14 closed pins 12 & 15 of P1) Not used Pins 15 & 16 open Not used Pins 17 & 18 open SERIAL PORT INTERRUPT SELECTION IRQ E8 2/9 Pins 1 & 2 closed 3 Pins 3 & 4 closed 4 Pins 5 & 6 closed 5 Pins 7 & 8 closed Normal IRQ mode Pins 9 & 10 closed Multi IRQ mode Pins 11 & 12 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 CHANNEL SELECTION Channel E3 1 – two channel mode Pins 1 & 2 closed 3 – two channel mode Pins 1 & 2 closed Two channel A/B mode A3B1 Pins 3 & 4 closed Two channel A/B mode A1B3 Pins 5 & 6 closed Closed = channel A, Open = channel B Pins 7 & 8 closed 3 – acknowledges channel 3 Pins 9 & 10 closed 1 – acknowledges channel 1 Pins 11 & 12 closed DMA SELECTION Setting E5 SCC channel A/B uses channel 3 Pins 1 & 2 closed SCC channel A uses channel 3 Pins 3 & 4 closed SCC channel A/B uses channel 1 Pins 5 & 6 closed SCC channel A uses channel 3 Pins 7 & 8 closed SCC channel B enabled for half duplex Pins 9 & 10 closed DMA transfers SCC channel A – DMA channel 1/3 for full Pins 11 & 12 closed duplex transfers DMA tri state drivers permanently Pins 13 & 14 closed enabled DMA tri state drivers enabled by status Pins 15 & 16 closed control port bit 7