KM-516 IO card Settings and Configuration

Card Type	Multi I/O card
Chipset/Controller	National Semiconductor
I/O Options	Floppy drive interface, game port, parallel port, serial ports (2)
Maximum DRAM	N/A

CONNECTIONS
Purpose	Location	Purpose	Location
Floppy Drive Interface	CN1	Game port 16-pin header	CN4A
Serial port 1	CN2	Game port DB-15	CN4B
Serial port 2	CN3	Parallel port	CN5

SERIAL PORT CONFIGURATION
Port 1 (CN2)		Port 2 (CN3)	J3A	J3B	J3C	J3D
»	COM1	COM2	Open	Open	Pins 1 & 2	Pins 2 & 3
	COM1	Disabled	Open	Open	Open	Pins 2 & 3
	Disabled	COM2	Open	Open	Pins 1 & 2	Open
	COM3	COM4	Pins 1 & 2	Pins 2 & 3	Open	Open
	COM3	Disabled	Open	Pins 2 & 3	Open	Open
	Disabled	COM4	Pins 1 & 2	Open	Open	Open
Note: Pins designated should be in the closed position.

SERIAL PORT INTERRUPT SELECTION
Port 1 (CN2)		Port 2 (CN3)	J4A	J4B	J4C	J4D
»	IRQ4	IRQ3	Open	Pins 1 & 2	Pins 2 & 3	Open
	IRQ4	Disabled	Open	Open	Pins 2 & 3	Open
	Disabled	IRQ3	Open	Pins 1 & 2	Open	Open
	IRQ5	IRQ2	Pins 1 & 2	Open	Open	Pins 2 & 3
	IRQ5	Disabled	Open	Open	Open	Pins 2 & 3
	Disabled	IRQ2	Pins 1 & 2	Open	Open	Open
Note: Pins designated should be in the closed position.

PARALLEL PORT CONFIGURATION
LPT		Mode	J1	J2
»	1	Unidirectional	Pins 1 & 2 closed	Pins 4 & 5 closed
	2	Bidirectional	Pins 2 & 3 closed	Pins 5 & 6 closed