COMTROL CORPORATION HOSTESS 550 RJ11 Card Type Serial Chipset 16554 I/O Options Serial ports (4) Data Bus 16-bit ISA Card Size Full height, three-quarters length [Image] CONNECTIONS Function Label Function Label Serial port 1 J1 Serial port 5 J5 Serial port 2 J2 Serial port 6 J6 Serial port 3 J3 Serial port 7 J7 Serial port 4 J4 Serial port 8 J8 USER CONFIGURABLE SETTINGS Setting Label Position » Factory configured - do not alter SW1/1 Off Interrupt mask enabled SW2/1 On Interrupt mask disabled SW2/1 Off BASE I/O ADDRESS SELECTION Setting SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 SW1/7 SW1/8 0000h On On On On On On On 0040h Off On On On On On On 0080h On Off On On On On On 00C0h Off Off On On On On On 0100h On On Off On On On On » 0280h On Off On Off On On On 1EC0h Off Off On Off Off Off Off 1F00h On On Off Off Off Off Off 1F40h Off On Off Off Off Off Off 1F80h On Off Off Off Off Off Off 1FC0h Off Off Off Off Off Off Off Note: A total of 256 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/8 is the Most Significant Bit and switch SW1/2 is the Least Significant Bit. The switches have the following decimal values: SW1/8=4096, SW1/7=2048, SW1/6=1024, SW1/5=512, SW1/4=256, SW1/3=128, SW1/2=64. 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 Setting SW2/2 SW2/3 SW2/4 SW2/5 SW2/6 SW2/7 SW2/8 2 On Off Off Off Off Off Off 3 Off On Off Off Off Off Off 4 Off Off On Off Off Off Off 5 Off Off Off On Off Off Off 7 Off Off Off Off On Off Off 10 Off Off Off Off Off On Off 11 Off Off Off Off Off Off On