I/O EXTENSION XT IO card Settings and Configuration

Card Type	Multi I/O card
Chipset Controller	Unidentified
I/O Options	Serial port (2), game port, parallel port
Maximum DRAM	N/A

CONNECTIONS
Purpose	Location	Purpose	Location
9-pin serial port connector 1	J1	25-pin parallel port connector	J3
10-pin serial port interface 2	J2	16-pin game port interface	J4

PARALLEL PORT BASE I/O ADDRESS SELECTION
Address		SW1/3
»	378h	Off
	278h	On

PARALLEL PORT INTERRUPT SELECTION
IRQ		JP3/A	JP3/B
»	7	Open	Closed
	5	Closed	Open

SERIAL PORT 1 & 2 CONFIGURATION
Serial port 1	Serial port 2	SW1/1	SW1/2
COM1 (3F8h - 3FFh)	COM2 (2F8h - 2FFh)	Off	On
COM2 (2F8h - 2FFh)	COM3 (3E8h - 3EFh)	On	Off
COM3 (3E8h - 3EFh)	COM4 (2E8h - 2EFh)	On	On
Disabled	Disabled	Off	Off

SERIAL PORT 1 INTERRUPT SELECTION
IRQ		JP1/A	JP1/B	JP1/C	JP1/D
»	4	Open	Open	Closed	Open
	2	Closed	Open	Open	Open
	3	Open	Closed	Open	Open
	5	Open	Open	Open	Closed

SERIAL PORT 2 INTERRUPT SELECTION
IRQ		JP2/A	JP2/B	JP2/C	JP2/D
»	3	Open	Closed	Open	Open
	2	Closed	Open	Open	Open
	4	Open	Open	Closed	Open
	5	Open	Open	Open	Closed

REALTIME CLOCK/CALENDAR CONFIGURATION
Setting	SW1/4
Disabled	Off
Enabled	On

REALTIME CLOCK/CALENDAR INTERRUPT SELECTION
IRQ	JP4/A	JP4/B
2	Open	Closed
5	Closed	Open