CHASE RESEARCH, INC. CHASE IOXTRA Card Type Serial card Chip Set Unidentified I/O Options Serial ports (2) Card Size Half-length, full-height Data Bus 8-bit ISA [Image] CONNECTIONS Function Label Function Label Serial port A CN1 Serial port B CN2 USER CONFIGURABLE SETTINGS Function Label Position Serial port A enabled J4 Pins 2 & 3 closed Serial port A disabled J4 Pins 1 & 2 closed Serial port B enabled J5 Pins 2 & 3 closed Serial port B disabled J5 Pins 1 & 2 closed CLOCK SET Clock J1/A J1/B J1/C J1/D J1/E J1/F 2C0 Closed Open Open Open Open Open 2C8 Open Closed Open Open Open Open 2D0 Open Open Closed Open Open Open 2D8 Open Open Open Closed Open Open 3C0 Open Open Open Open Closed Open 3C8 Open Open Open Open Open Closed SERIAL PORT A ADDRESS SELECTION Setting J7 COM1 Pins 1 & 3, 2 & 4 closed COM3 Pins 1 & 3, 4 & 6 closed SERIAL PORT B ADDRESS SELECTION Setting J6 COM2 Pins 3 & 5, 2 & 4 closed COM4 Pins 3 & 5, 4 & 6 closed SERIAL PORT A INTERRUPT SETTINGS IRQ J2/A J2/B J2/C J2/D 3 Closed Open Open Open 4 Open Closed Open Open 5 Open Open Closed Open 9 Open Open Open Closed SERIAL PORT B INTERRUPT SETTINGS IRQ J3/A J3/B J3/C J3/D 3 Closed Open Open Open 4 Open Closed Open Open 5 Open Open Closed Open 9 Open Open Open Closed