TURBO PORT/RA1 IO card Settings and Configuration

Card Type	Serial card
Chipset Controller	Startech
I/O Options	Serial port
Maximum DRAM	N/A

CONNECTIONS
Purpose	Location
9-pin serial port	P1

SERIAL PORT 1 CONFIGURATION
COM		IRQ	SW1/1	SW1/2	SW1/3	SW1/4
»	COM3(3E8-3EF)	4	On	Off	On	On
	COM1(3F8-3FF)	4	On	On	On	On
	COM1(3F8-3FF)	*	On	On	Off	On
	COM2(2F8-2FF)	3	Off	On	On	On
	COM2(2F8-2FF)	*	Off	On	Off	On
	COM3(3E8-3EF)	*	On	Off	Off	On
	COM4(2E8-2EF)	3	Off	Off	On	On
	COM4(2E8-2EF)	*	Off	Off	Off	On
	NONE	N/A	N/A	N/A	N/A	Off
*Note: See interrupt table for IRQ selection.

INTERRUPT SELECTION
IRQ		SW2/1	SW2/2	SW2/3	SW2/4	SW2/5	SW2/6	SW2/7	SW2/8
»	NONE	Off	Off	Off	Off	Off	Off	Off	Off
	2	On	Off	Off	Off	Off	Off	Off	Off
	3	Off	On	Off	Off	Off	Off	Off	Off
	4	Off	Off	On	Off	Off	Off	Off	Off
	5	Off	Off	Off	On	Off	Off	Off	Off
	10	Off	Off	Off	Off	On	Off	Off	Off
	11	Off	Off	Off	Off	Off	On	Off	Off
	12	Off	Off	Off	Off	Off	Off	On	Off
	15	Off	Off	Off	Off	Off	Off	Off	On

BAUD RATE SELECTION
Mode		JMP1
»	Software-select	Pins 1 & 2 closed
	Fast baud rates	Pins 2 & 3 closed
	Standard baud rates	Pins 3 & 4 closed

FACTORY CONFIGURED - DO NOT ALTER
Switch	Position
SW1/5	N/A
SW1/6	N/A
SW1/7	N/A
SW1/8	N/A