DUAL SIO IO card Settings and Configuration

Card Type	Serial card
Chip Set	Unidentified
Maximum Onboard Memory	Unidentified
I/O Options	Serial ports (2 RS-422 or RS-485)
Hard Drives supported	None
Floppy drives supported	None
Data Bus	8-bit ISA
Card Size	Half-length, full-height

CONNECTIONS
Function	Label	Function	Label
Serial Port 1	J1	Serial Port 2	J2

USER CONFIGURABLE SETTINGS
Function	Label	Position
Port 1 enabled	SW1/8	On
Port 1 disabled	SW1/8	Off
Port 2 enabled	SW2/8	On
Port 2 disabled	SW2/8	Off
Port 1 enabled by RTS	E3	Closed
Port 1 always enabled	E3	Open
Port 2 enabled by RTS	E4	Closed
Port 2 always enabled	E4	Open

BASE I/O ADDRESS SELECTION PORT 1
Setting		SW1/1	SW1/2	SW1/3	SW1/4	SW1/5	SW1/6	SW1/7
	280h	Off	On	Off	On	On	On	On
	2AOh	Off	On	Off	On	Off	On	On
	2E8h	Off	On	Off	Off	Off	On	Off
	2F8h	Off	On	Off	Off	Off	Off	Off
	3E8h	Off	Off	Off	Off	Off	On	Off
	300h	Off	Off	On	On	On	On	On
	328h	Off	Off	On	On	Off	On	Off
»	3F8h	Off	Off	Off	Off	Off	Off	Off

BASE I/O ADDRESS SELECTION PORT 2
Setting		SW2/1	SW2/2	SW2/3	SW2/4	SW2/5	SW2/6	SW2/7
	280h	Off	On	Off	On	On	On	On
	2A0h	Off	On	Off	On	Off	On	On
	2E8h	Off	On	Off	Off	Off	On	Off
»	2F8h	Off	On	Off	Off	Off	Off	Off
	3E8h	Off	Off	Off	Off	Off	On	Off
	300h	Off	Off	On	On	On	On	On
	328h	Off	Off	On	On	Off	On	Off
	3F8h	Off	Off	Off	Off	Off	Off	Off

SERIAL PORT 1 INTERRUPT SELECTION
IRQ		E1/A	E1/B	E1/C	E1/D
	IR/FONT>	Closed	Open	Open	Open
	IRQ3	Open	Closed	Open	Open
»	IRQ4	Open	Open	Closed	Open
	IRQ5	Open	Open	Open	Closed

SERIAL PORT 2 INTERRUPT SELECTION
IRQ		E1/A	E1/B	E1/C	E1/D
	IR/FONT>	Closed	Open	Open	Open
»	IRQ3	Open	Closed	Open	Open
	IRQ4	Open	Open	Closed	Open
	IRQ5	Open	Open	Open	Closed