422/485PC-40/DB25 IO card Settings and Configuration

Card Type	Serial card
Chip Set	Unidentified
Maximum Onboard Memory	N/A
I/O Options	Serial ports (4)
Data Bus	16-bit ISA
Floppy drives supported	N/A

CONNECTIONS
Function	Label	Function	Label
37-pin serial port connector	CN1	38-pin serial port interface	CN2

SERIAL PORT 1 ADDRESS CONFIGURATION
Setting		J7/A
»	COM1 (3F8h)	Closed
	Disabled	Open

SERIAL PORT 2 ADDRESS CONFIGURATION
Setting		J7/B
»	COM2 (2F8h)	Closed
	Disabled	Open

SERIAL PORT 3 ADDRESS CONFIGURATION
Setting		J7/C
»	COM3 (3E8h)	Closed
	Disabled	Open

SERIAL PORT 4 ADDRESS CONFIGURATION
Setting		J7/D
»	COM4 (2E8h)	Closed
	Disabled	Open

SERIAL PORT 1 INTERRUPT SELECTION
IRQ		SP1/A	SP1/B	SP1/C	SP1/D	SP1/E	SP1/F
	2/9	Closed	Open	Open	Open	Open	Open
	3	Open	Closed	Open	Open	Open	Open
»	4	Open	Open	Closed	Open	Open	Open
	5	Open	Open	Open	Closed	Open	Open
	6	Open	Open	Open	Open	Closed	Open
	7	Open	Open	Open	Open	Open	Closed
	10	Open	Open	Open	Open	Open	Open
	11	Open	Open	Open	Open	Open	Open
	12	Open	Open	Open	Open	Open	Open
	14	Open	Open	Open	Open	Open	Open
	15	Open	Open	Open	Open	Open	Open

SERIAL PORT 1 INTERRUPT SELECTION (CON’T)
IRQ		SP1/G	SP1/H	SP1/I	SP1/J	SP1/K
	2/9	Open	Open	Open	Open	Open
	3	Open	Open	Open	Open	Open
»	4	Open	Open	Open	Open	Open
	5	Open	Open	Open	Open	Open
	6	Open	Open	Open	Open	Open
	7	Open	Open	Open	Open	Open
	10	Closed	Open	Open	Open	Open
	11	Open	Closed	Open	Open	Open
	12	Open	Open	Closed	Open	Open
	14	Open	Open	Open	Closed	Open
	15	Open	Open	Open	Open	Closed

SERIAL PORT 2 INTERRUPT SELECTION
IRQ		SP2/A	SP2/B	SP2/C	SP2/D	SP2/E	SP2/F
	2/9	Closed	Open	Open	Open	Open	Open
»	3	Open	Closed	Open	Open	Open	Open
	4	Open	Open	Closed	Open	Open	Open
	5	Open	Open	Open	Closed	Open	Open
	6	Open	Open	Open	Open	Closed	Open
	7	Open	Open	Open	Open	Open	Closed
	10	Open	Open	Open	Open	Open	Open
	11	Open	Open	Open	Open	Open	Open
	12	Open	Open	Open	Open	Open	Open
	14	Open	Open	Open	Open	Open	Open
	15	Open	Open	Open	Open	Open	Open

SERIAL PORT 2 INTERRUPT SELECTION (CON’T)
IRQ		SP2/G	SP2/H	SP2/I	SP2/J	SP2/K
	2/9	Open	Open	Open	Open	Open
»	3	Open	Open	Open	Open	Open
	4	Open	Open	Open	Open	Open
	5	Open	Open	Open	Open	Open
	6	Open	Open	Open	Open	Open
	7	Open	Open	Open	Open	Open
	10	Closed	Open	Open	Open	Open
	11	Open	Closed	Open	Open	Open
	12	Open	Open	Closed	Open	Open
	14	Open	Open	Open	Closed	Open
	15	Open	Open	Open	Open	Closed

SERIAL PORT 3 INTERRUPT SELECTION
IRQ		SP3/A	SP3/B	SP3/C	SP3/D	SP3/E	SP3/F
	2/9	Closed	Open	Open	Open	Open	Open
	3	Open	Closed	Open	Open	Open	Open
	4	Open	Open	Closed	Open	Open	Open
»	5	Open	Open	Open	Closed	Open	Open
	6	Open	Open	Open	Open	Closed	Open
	7	Open	Open	Open	Open	Open	Closed
	10	Open	Open	Open	Open	Open	Open
	11	Open	Open	Open	Open	Open	Open
	12	Open	Open	Open	Open	Open	Open
	14	Open	Open	Open	Open	Open	Open
	15	Open	Open	Open	Open	Open	Open

SERIAL PORT 3 INTERRUPT SELECTION (CON’T)
IRQ		SP3/G	SP3/H	SP3/I	SP3/J	SP3/K
	2/9	Open	Open	Open	Open	Open
	3	Open	Open	Open	Open	Open
	4	Open	Open	Open	Open	Open
»	5	Open	Open	Open	Open	Open
	6	Open	Open	Open	Open	Open
	7	Open	Open	Open	Open	Open
	10	Closed	Open	Open	Open	Open
	11	Open	Closed	Open	Open	Open
	12	Open	Open	Closed	Open	Open
	14	Open	Open	Open	Closed	Open
	15	Open	Open	Open	Open	Closed

SERIAL PORT 4 INTERRUPT SELECTION
IRQ		SP4/A	SP4/B	SP4/C	SP4/D	SP4/E	SP4/F
	2/9	Closed	Open	Open	Open	Open	Open
	3	Open	Closed	Open	Open	Open	Open
	4	Open	Open	Closed	Open	Open	Open
	5	Open	Open	Open	Closed	Open	Open
	6	Open	Open	Open	Open	Closed	Open
	7	Open	Open	Open	Open	Open	Closed
»	10	Open	Open	Open	Open	Open	Open
	11	Open	Open	Open	Open	Open	Open
	12	Open	Open	Open	Open	Open	Open
	14	Open	Open	Open	Open	Open	Open
	15	Open	Open	Open	Open	Open	Open

SERIAL PORT 4 INTERRUPT SELECTION (CON’T)
IRQ		SP4/G	SP4/H	SP4/I	SP4/J	SP4/K
	2/9	Open	Open	Open	Open	Open
	3	Open	Open	Open	Open	Open
	4	Open	Open	Open	Open	Open
	5	Open	Open	Open	Open	Open
	6	Open	Open	Open	Open	Open
	7	Open	Open	Open	Open	Open
»	10	Closed	Open	Open	Open	Open
	11	Open	Closed	Open	Open	Open
	12	Open	Open	Closed	Open	Open
	14	Open	Open	Open	Closed	Open
	15	Open	Open	Open	Open	Closed

MISCELLANEOUS TECHNICAL NOTE

Note: CN1 is a DB-37 connector which has two DB-25 (port 1 & 2) serial ports connected. CN2 is a 38-pin interface which can be connected to an external DB-37 which splits into two DB-25 serial ports (port 3 & 4) .