RS232C IO card Settings and Configuration

Card Type	Multi 1/0 card
Chip Set	Unidentified
Maximum Onboard Memory	Unidentified
I/O Options	Serial ports (2)
Hard Drives supported	None
Floppy drives supported	None
Data Bus	8-bit ISA
Card Size	Half-height card

CONNECTIONS
Function	Label	Function	Label
Serial port 1	CN1	Serial port 2	J2

SERIAL PORT 1 ADDRESS SELECTION
Setting	SW1/1	SW1/3
Port disabled	Off	Off
3E8-2EF	Off	On
3F8-3FF	On	Off

SERIAL PORT 2 ADDRESS SELECTION
Setting	SW1/2	SW1/4
Port disabled	Off	Off
2E8-2EF	Off	On
2F8-2FF	On	Off

SERIAL PORT 1 INTERRUPT SELECTION
IRQ	SW1/5	SW1/6
Interrupt disabled	Off	Off
IRQ3	Off	On
IRQ4	On	Off

SERIAL PORT 2 INTERRUPT SELECTION
IRQ	SW1/7	SW1/8
Interrupt disabled	Off	Off
IRQ3	Off	On
IRQ4	On	Off

MISCELLANEOUS TECHNICAL NOTES

A second serial port may be added by inserting an UM8250 into U2, a MC1489 into U3, a MC1488 into U4, and connecting an external adapter to J2