Card Type	Serial card
Chip Set	Unidentified
Data Bus	8-bit ISA

CONNECTIONS
Function	Label	Function	Label
9-pin serial port 1	CN1	9-pin serial port 3	CN3
9-pin serial port 2	CN2

SERIAL PORT 1 ADDRESS SELECTION
COM port		Address	IRQ	J1
	COM1	3F8h	IRQ4	Pins 1 & 2 closed
»	COM2	2F8h	IRQ3	Pins 3 & 4 closed
	COM3	3E8h	IRQ3	Pins 5 & 6 closed
	COM4	2E8h	IRQ3	Pins 7 & 8 closed
	COM5	1A0h	IRQ3	Pins 9 & 10 closed
	COM6	1A8h	IRQ3	Pins 11 & 12 closed
	COM7	1B0h	IRQ3	Pins 13 & 14 closed
	COM8	1B8h	IRQ3	Pins 15 & 16 closed

SERIAL PORT 2 ADDRESS SELECTION
COM port		Address	IRQ	J2
	COM1	3F8h	IRQ4	Pins 1 & 2 closed
	COM2	2F8h	IRQ3	Pins 3 & 4 closed
»	COM3	3E8h	IRQ3	Pins 5 & 6 closed
	COM4	2E8h	IRQ3	Pins 7 & 8 closed
	COM5	1A0h	IRQ3	Pins 9 & 10 closed
	COM6	1A8h	IRQ3	Pins 11 & 12 closed
	COM7	1B0h	IRQ3	Pins 13 & 14 closed
	COM8	1B8h	IRQ3	Pins 15 & 16 closed

SERIAL PORT 3 ADDRESS SELECTION
COM port		Address	IRQ	J3
	COM1	3F8h	IRQ4	Pins 1 & 2 closed
	COM2	2F8h	IRQ3	Pins 3 & 4 closed
	COM3	3E8h	IRQ3	Pins 5 & 6 closed
»	COM4	2E8h	IRQ3	Pins 7 & 8 closed
	COM5	1A0h	IRQ3	Pins 9 & 10 closed
	COM6	1A8h	IRQ3	Pins 11 & 12 closed
	COM7	1B0h	IRQ3	Pins 13 & 14 closed
	COM8	1B8h	IRQ3	Pins 15 & 16 closed

SERIAL PORT IRQ SELECTION
IRQ		JP1	JP2	JP3
	IRQ2	Pins 11 & 12 closed	Pins 11 & 12 closed	Pins 11 & 12 closed
	IRQ3	Pins 9 & 10 closed	Pins 9 & 10 closed	Pins 9 & 10 closed
»	IRQ4	Pins 7 & 8 closed	Pins 7 & 8 closed	Pins 7 & 8 closed
	IRQ5	Pins 5 & 6 closed	Pins 5 & 6 closed	Pins 5 & 6 closed
	IRQ6	Pins 3 & 4 closed	Pins 3 & 4 closed	Pins 3 & 4 closed
	IRQ7	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
	IRQ10	Pins 13 & 14 closed	Pins 13 & 14 closed	Pins 13 & 14 closed
	IRQ11	Pins 15 & 16 closed	Pins 15 & 16 closed	Pins 15 & 16 closed
	IRQ12	Pins 17 & 18 closed	Pins 17 & 18 closed	Pins 17 & 18 closed
	IRQ14	Pins 19 & 20 closed	Pins 19 & 20 closed	Pins 19 & 20 closed
	IRQ15	Pins 21 & 22 closed	Pins 21 & 22 closed	Pins 21 & 22 closed
Note: JP1 controls COM1. JP2 controls COM2. JP3 controls COM3.