MULTITECH SYSTEMS, INC. ISI508U Card Type Serial card Chipset Controller N/A I/O Options Serial ports (8 on external panel) Maximum DRAM N/A [Image] CONNECTIONS Purpose Location 78-pin serial port connector CN1 I/O BASE ADDRESS SELECTION Address SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 SW1/7 SW1/8 » 380h On On On On Off Off Off On 100h On On On On On Off On On 108h Off On On On On Off On On 110h On Off On On On Off On On 118h Off Off On On On Off On On 120h On On Off On On Off On On 3D8h Off Off On Off Off Off Off On 3E0h On On Off Off Off Off Off On 3E8h Off On Off Off Off Off Off On 3F0h On Off Off Off Off Off Off On 3F8h Off Off Off Off Off Off Off On Note:A total of 96 base address settings are available. The switches are a binary representation of the decimal memory addresses. Switch SW1/8 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: switch SW1/1=8, SW1/2=16, SW1/3=32, SW1/4=64, SW1/5=128, SW1/6=256, SW1/7=512, SW1/8=1024. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0) INTERRUPT SELECTION IRQ J1/A J1/B J1/C J1/D J1/E J1/F » 3 Open Closed Open Open Open Open 2/9 Closed Open Open Open Open Open 4 Open Open Closed Open Open Open 5 Open Open Open Closed Open Open 6 Open Open Open Open Closed Open 7 Open Open Open Open Open Closed