BOCA RESEARCH, INC.

IO650

Card Type	Serial Card
Chipset/Controller	Unidentified
I/O Options	Serial ports (2)
Maximum DRAM	N/A

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 1	CN1	Serial port 2	CN2

SERIAL PORT 1 CONFIGURATION
COM		J7/A	J7/B	J4
»	COM3	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed
	COM1	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 2 & 3 closed
	COM2	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
	COM4	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
	Disabled	N/A	N/A	Pins 1 & 2 closed

SERIAL PORT 2 CONFIGURATION
COM		J6/A	J6/B	J5
»	COM4	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
	COM3	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed
	COM1	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 2 & 3 closed
	COM2	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
	Disabled	N/A	N/A	Pins 1 & 2 closed

SERIAL PORT 1 INTERRUPT SELECTION
IRQ		J2/A	J2/B	J2/C	J2/D
»	IRQ5	Open	Open	Closed	Open
	IRQ3	Closed	Open	Open	Open
	IRQ4	Open	Closed	Open	Open
	IRQ9	Open	Open	Open	Closed

SERIAL PORT 2 INTERRUPT SELECTION
IRQ		J3/A	J3/B	J3/C	J3/D
»	IRQ9	Open	Open	Open	Closed
	IRQ3	Closed	Open	Open	Open
	IRQ4	Open	Closed	Open	Open
	IRQ5	Open	Open	Closed	Open

SERIAL PORT I/O ADDRESS SELECTION/CLOCK SET
Address Pair		J1/A	J1/B	J1/C	J1/D	J1/E	J1/F
»	2C0h, 2C8h	Closed	Closed	Open	Open	Open	Open
	2D0h, 2D8h	Open	Open	Closed	Closed	Open	Open
	3C0h, 3C8h	Open	Open	Open	Open	Closed	Closed

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