Card Type	Serial card
Chip Set	8250 CHIP
Maximum Onboard Memory	None
I/O Options	serial ports (4)
Data Bus	Unidentified

CONNECTIONS
Function	Label	Function	Label
Serial port 1	J1	Serial port 3	J3
Serial port 2	J2	Serial port 4	J4

USER CONFIGURABLE SETTINGS
Function	Label	Position
Serial port 1 IRQ4 enabled	JP1/1	Pins 1 & 2 closed
Serial port 1 IRQ3 enabled	JP1/1	Pins 2 & 3 closed
Serial port 2 IRQ4 enabled	JP1/2	Pins 1 & 2 closed
Serial port 2 IRQ3 enabled	JP1/2	Pins 2 & 3 closed
Serial port 3 IRQ5 enabled	JP1/3	Pins 1 & 2 closed
Serial port 3 IRQ2 enabled	JP1/3	Pins 2 & 3 closed
Serial port 4 IRQ5 enabled	JP1/4	Pins 1 & 2 closed
Serial port 4 IRQ2 enabled	JP1/4	Pins 2 & 3 closed

BASE I/O ADDRESS SELECTION (SERIAL PORT 1)
Setting	SW1/1	SW1/3	SW1/5
3F8h - 3FFh	On	Off	Off
2F8h - 2FFh	Off	On	Off
3E8h - 3EFh	Off	Off	On

BASE I/O ADDRESS SELECTION (SERIAL PORT 2)
Setting	SW1/2	SW1/4	SW1/6
3F8h - 3FFh	Off	On	Off
2F8h - 2FFh	On	Off	Off
2E8h - 2EFh	Off	Off	On

BASE I/O ADDRESS SELECTION (SERIAL PORT 3)
Setting	SW1/7	SW1/9
3E8h - 3EFh	On	Off
2E8h - 2EFh	Off	On

BASE I/O ADDRESS SELECTION (SERIAL PORT 4)
Setting	SW1/8	SW1/10
3E8h - 3EFh	Off	On
2E8h - 2EFh	On	Off