MULTI-TECH SYSTEMS, INC. ISI552PC Card Type Serial interface Chipset Controller Unidentified I/O Options Serial ports (2) Maximum Dram N/A [Image] CONNECTIONS Purpose Location Serial port 1 J1 Serial port 2 J2 FACTORY CONFIGURED-DO NOT ALTER Switch Setting SW1/8 Off PORT 1 INTERRUPT SELECTION IRQ JP1 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 PORT 1 INTERRUPT SELECTION IRQ JP1 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 PORT 1 ADDRESS SELECT Address SW1/7 SW1/6 SW1/5 SW1/4 SW1/3 SW1/2 SW1/1 100h Off Off On Off Off Off Off 108h Off Off On Off Off Off On 110h Off Off On Off Off On Off 118h Off Off On Off Off On On 2E8h On Off On On On Off On (COM4:) 2F8h On Off On On On On On (COM2:) 3E0 On On On On On Off Off 3E8h On On On On On Off On (COM3:) 3F0h On On On On On On Off 3F8h On On On On On On On (COM1:) Note: A total of 752 memory base address settings are available. The switches are a binary representation of the decimal addresses. Switch 1 is the Least Significant Bit and switch 7 is the Most Significant Bit. The switches have the following decimal values: switch 1=8, 2=16, 3=32, 4=64, 5=128, 6=256, 7=512. Add the values of the on switches to obtain the correct memory address. (Off=0, On=1) PORT 2 ADDRESS SELECT Address SW2/7 SW2/6 SW2/5 SW2/4 SW2/3 SW2/2 SW2/1 100h Off Off On Off Off Off Off 108h Off Off On Off Off Off On 110h Off Off On Off Off On Off 118h Off Off On Off Off On On 2E8h On Off On On On Off On (COM4:) 2F8h On Off On On On On On (COM2:) 3E0 On On On On On Off Off 3E8h On On On On On Off On (COM3:) 3F0h On On On On On On Off 3F8h On On On On On On On (COM1:) Note: A total of 752 memory base address settings are available. The switches are a binary representation of the decimal addresses. Switch 1 is the Least Significant Bit and switch 7 is the Most Significant Bit. The switches have the following decimal values: switch 1=8, 2=16, 3=32, 4=64, 5=128, 6=256, 7=512. Add the values of the on switches to obtain the correct memory address. (Off=0, On=1)