I/O 450 IO card Settings and Configuration

Card Type	Parallel/Serial card
Chip Set	AT-type GM 82C 455
Maximum Onboard Memory	None
I/O Options	Parallel port (2), serial port (2)
Data Bus	8-bit ISA
Floppy drives supported	None

CONNECTIONS
Function	Label	Function	Label
26-pin Parallel port 2	J1	9-pin serial port 1	J4
10-pin serial port 2	J3	25-pin parallel port 1	J7

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Serial port 1 enabled	J2/A	Pins 2 & 3 closed
	Serial port 1 disabled	J2/A	Pins 1 & 2 closed
»	Serial port 2 enabled	J2/B	Pins 2 & 3 closed
	Serial port 2 disabled	J2/B	Pins 1 & 2 closed
»	Parallel port 1 enabled	J2/C	Pins 2 & 3 closed
	Parallel port 1 disabled	J2/C	Pins 1 & 2 closed
»	Parallel port 2 enabled	J2/D	Pins 2 & 3 closed
	Parallel port 2 disabled	J2/D	Pins 1 & 2 closed

SERIAL PORT 1 ADDRESS SELECTION
Setting		J2/E
»	COM1 (3F8h)	Pins 2 & 3 closed
	COM3 (3E8h)	Pins 1 & 2 closed

SERIAL PORT 2 ADDRESS SELECTION
Setting		J2/F
»	COM2 (2F8h)	Pins 2 & 3 closed
	COM4 (2E8h)	Pins 1 & 2 closed

PARALLEL PORT 1 INTERRUPT SELECTION
IRQ		J2/G
	5	Pins 2 & 3 closed
»	7	Pins 1 & 2 closed

PARALLEL PORT 2 INTERRUPT SELECTION
IRQ		J2/H
»	5	Pins 2 & 3 closed
	7	Pins 1 & 2 closed

SERIAL PORT 1 INTERRUPT SELECTION
IRQ		J2/I	J2/J	J2/K	J2/L
	3	Pins 2 & 3 closed	Open	Open	Open
»	4	Open	Pins 2 & 3 closed	Open	Open
	5	Open	Open	Pins 2 & 3 closed	Open
	9	Open	Open	Open	Pins 2 & 3 closed

SERIAL PORT 2 INTERRUPT SELECTION
IRQ		J2/I	J2/J	J2/K	J2/L
»	3	Pins 1 & 2closed	Open	Open	Open
	4	Open	Pins 1 & 2 closed	Open	Open
	5	Open	Open	Pins 1 & 2 closed	Open
	9	Open	Open	Open	Pins 1 & 2 closed