Card Type	Serial card
Chipset Controller	16550 (2)
I/O Options	Serial port (2)
Maximum DRAM	N/A

CONNECTIONS
Purpose	Location	Purpose	Location
25-pin serial port (A)	J1	10-pin serial port interface (B)	J2

SERIAL PORT A CONFIGURATION
COM		JP1	JP2	JP3	JP4
»	COM1 (3F8h)	Open	Open	Open	Pins 1 & 2 closed
	COM2 (2F8h)	Open	Open	Pins 1 & 2 closed	Open
	COM3 (3E8h)	Open	Pins 1 & 2 closed	Open	Open
	COM4 (2E8h)	Pins 1 & 2 closed	Open	Open	Open
	Disabled	Open	Open	Open	Open

SERIAL PORT B CONFIGURATION
COM		JP1	JP2	JP3	JP4
»	COM2 (2F8h)	Open	Open	Pins 2 & 3 closed	Open
	COM1 (3F8h)	Open	Open	Open	Pins 2 & 3 closed
	COM3 (3E8h)	Open	Pins 2 & 3 closed	Open	Open
	COM4 (2E8h)	Pins 2 & 3 closed	Open	Open	Open
	Disabled	Open	Open	Open	Open

SERIAL PORT A INTERRUPT SELECTION
IRQ		JP5	JP6	JP7	JP8	JP9	JP10
»	4	Open	Open	Open	Open	Open	Open
	2/9	Open	Open	Open	Open	Open	Pins 2 & 3
	3	Open	Open	Open	Open	Open	Open
	5	Open	Open	Open	Open	Open	Open
	6	Open	Open	Open	Open	Open	Open
	7	Open	Open	Open	Open	Open	Open
	10	Open	Open	Open	Open	Pins 2 & 3	Open
	11	Open	Open	Open	Pins 2 & 3	Open	Open
	12	Open	Open	Pins 2 & 3	Open	Open	Open
	14	Open	Pins 2 & 3	Open	Open	Open	Open
	15	Pins 2 & 3	Open	Open	Open	Open	Open
Note: Pins designated are in the closed position.

SERIAL PORT A INTERRUPT SELECTION (CON’T)
IRQ		JP11	JP12	JP13	JP14	JP15
»	4	Open	Open	Open	Pins 2 & 3	Open
	2/9	Open	Open	Open	Open	Open
	3	Open	Open	Open	Open	Pins 2 & 3
	5	Open	Open	Pins 2 & 3	Open	Open
	6	Open	Pins 2 & 3	Open	Open	Open
	7	Pins 2 & 3	Open	Open	Open	Open
	10	Open	Open	Open	Open	Open
	11	Open	Open	Open	Open	Open
	12	Open	Open	Open	Open	Open
	14	Open	Open	Open	Open	Open
	15	Open	Open	Open	Open	Open
Note: Pins designated are in the closed position.

SERIAL PORT B INTERRUPT SELECTION
IRQ		JP5	JP6	JP7	JP8	JP9	JP10
»	3	Open	Open	Open	Open	Open	Open
	2/9	Open	Open	Open	Open	Open	Pins 1 & 2
	4	Open	Open	Open	Open	Open	Open
	5	Open	Open	Open	Open	Open	Open
	6	Open	Open	Open	Open	Open	Open
	7	Open	Open	Open	Open	Open	Open
	10	Open	Open	Open	Open	Pins 1 & 2	Open
	11	Open	Open	Open	Pins 1 & 2	Open	Open
	12	Open	Open	Pins 1 & 2	Open	Open	Open
	14	Open	Pins 1 & 2	Open	Open	Open	Open
	15	Pins 1 & 2	Open	Open	Open	Open	Open
Note: Pins designated are in the closed position.

SERIAL PORT B INTERRUPT SELECTION (CON’T)
IRQ		JP11	JP12	JP13	JP14	JP15
»	3	Open	Open	Open	Open	Pins 1 & 2
	2/9	Open	Open	Open	Open	Open
	4	Open	Open	Open	Pins 1 & 2	Open
	5	Open	Open	Pins 1 & 2	Open	Open
	6	Open	Pins 1 & 2	Open	Open	Open
	7	Pins 1 & 2	Open	Open	Open	Open
	10	Open	Open	Open	Open	Open
	11	Open	Open	Open	Open	Open
	12	Open	Open	Open	Open	Open
	14	Open	Open	Open	Open	Open
	15	Open	Open	Open	Open	Open
Note: Pins designated are in the closed position.

CLOCK SOURCE SELECTION (SERIAL PORT A)
Speed	JP16/3	JP16/4
Double (3.6864MHz)	Closed	Open
Normal (1.8432MHz)	Open	Closed
Note: Some versions of the KW509S have a switch block (SW1) instead of a Jumper block (JP16). If this is true for your card these settings apply: Closed is On & Open is Off.

CLOCK SOURCE SELECTION (SERIAL PORT B)
Speed	JP16/1	JP16/2
Double (3.6864MHz)	Closed	Open
Normal (1.8432MHz)	Open	Closed
Note: Some versions of the KW509S have a switch block (SW1) instead of a Jumper block (JP16). If this is true for your card these settings apply: Closed is On & Open is Off.