SIO-320 DUAL SERIAL CARD IO card Settings and Configuration

Card Type	Multi I/O card
Chipset/Controller	N/A
I/O Options	Serial ports (2)
Maximum DRAM	N/A

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 1	CN1	Serial port 2	CN2

SERIAL PORT CONFIGURATION
Port 1 (CN1)	Port 2 (CN2)	JP1/A	JP1/B	JP1/C	JP1/D
COM1	COM2	Pins 2 & 3	Pins 1 & 2	Open	Open
COM1	COM3	Pins 2 & 3	Open	Pins 1 & 2	Open
COM1	COM4	Pins 2 & 3	Open	Open	Pins 1 & 2
COM2	COM1	Pins 1 & 2	Pins 2 & 3	Open	Open
COM2	COM3	Open	Pins 2 & 3	Pins 1 & 2	Open
COM2	COM4	Open	Pins 2 & 3	Open	Pins 1 & 2
COM3	COM1	Pins 1 & 2	Open	Pins 2 & 3	Open
COM3	COM2	Open	Pins 1 & 2	Pins 2 & 3	Open
COM3	COM4	Open	Open	Pins 2 & 3	Pins 1 & 2
COM4	COM1	Pins 1 & 2	Open	Open	Pins 2 & 3
COM4	COM2	Open	Pins 1 & 2	Open	Pins 2 & 3
COM4	COM3	Open	Open	Pins 1 & 2	Pins 2 & 3
Note: Pins designated should be in the closed position.

SERIAL PORT INTERRUPT SELECTION
Port 1 (CN1)	Port 2 (CN2)	JP2/A	JP2/B
IRQ4	IRQ3	Pins 2 & 3 closed	Pins1 & 2 closed
IRQ3	IRQ4	Pins 1 & 2 closed	Pins 2 & 3 closed