BOCA RESEARCH, INC. IO650 Card Type Serial Card Chipset/Controller Unidentified I/O Options Serial ports (2) Maximum DRAM N/A [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 CN1 Serial port 2 CN2 SERIAL PORT 1 CONFIGURATION COM J7/A J7/B J4 » COM3 Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed COM1 Pins 1 & 2 Pins 1 & 2 Pins 2 & 3 closed closed closed COM2 Pins 1 & 2 Pins 2 & 3 Pins 2 & 3 closed closed closed COM4 Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed Disabled N/A N/A Pins 1 & 2 closed SERIAL PORT 2 CONFIGURATION COM J6/A J6/B J5 » COM4 Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed COM3 Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed COM1 Pins 1 & 2 Pins 1 & 2 Pins 2 & 3 closed closed closed COM2 Pins 1 & 2 Pins 2 & 3 Pins 2 & 3 closed closed closed Disabled N/A N/A Pins 1 & 2 closed SERIAL PORT 1 INTERRUPT SELECTION IRQ J2/A J2/B J2/C J2/D » IRQ5 Open Open Closed Open IRQ3 Closed Open Open Open IRQ4 Open Closed Open Open IRQ9 Open Open Open Closed SERIAL PORT 2 INTERRUPT SELECTION IRQ J3/A J3/B J3/C J3/D » IRQ9 Open Open Open Closed IRQ3 Closed Open Open Open IRQ4 Open Closed Open Open IRQ5 Open Open Closed Open SERIAL PORT I/O ADDRESS SELECTION/CLOCK SET Address J1/A J1/B J1/C J1/D J1/E J1/F Pair » 2C0h, Closed Closed Open Open Open Open 2C8h 2D0h, Open Open Closed Closed Open Open 2D8h 3C0h, Open Open Open Open Closed Closed 3C8h