ISI502Q IO card Settings and Configuration

Card Type	Serial controller
Chipset/Controller	16450/16550A
I/O Options	Serial ports (2)
Maximum DRAM	N/A

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

PRIMARY PORT I/O ADDRESS SELECT
Address		SW1/1	SW1/2	SW1/3	SW1/4	SW1/5	SW1/6	SW1/7	SW1/8
»	2F8h	Off	On	On	On	On	Off	On	Off
	3F8h	Off	On	On	On	On	On	On	Off
	3E8h	Off	Off	On	On	On	On	On	Off
	2E8h	Off	Off	On	On	On	Off	On	Off

SECONDARY PORT I/O ADDRESS SELECT
Address		SW1/1	SW1/2	SW1/3	SW1/4	SW1/5	SW1/6	SW1/7	SW1/8
»	2F0h	Off	On	On	On	On	Off	On	Off
	3F0h	Off	On	On	On	On	On	On	Off
	3E0h	Off	Off	On	On	On	On	On	Off
	2E0h	Off	Off	On	On	On	Off	On	Off

PRIMARY SERIAL PORT INTERRUPT SELECT
IRQ		J2/A	J2/B	J2/C	J2/D	J2/E
»	IRQ4	Open	Open	Closed	Open	Open
	IRQ3	Open	Closed	Open	Open	Open
	IRQ2	Closed	Open	Open	Open	Open
	IRQ5	Open	Open	Open	Closed	Open
	IRQ7	Open	Open	Open	Open	Closed

SECONDARY SERIAL PORT INTERRUPT SELECT
IRQ		J1/A	J1/B	J1/C	J1/D	J1/E
»	IRQ5	Open	Open	Open	Closed	Open
	IRQ3	Open	Closed	Open	Open	Open
	IRQ4	Open	Open	Closed	Open	Open
	IRQ2	Closed	Open	Open	Open	Open
	IRQ7	Open	Open	Open	Open	Closed