PCCOM 8-BIT ISA 2-PORT RS422/485 IO card Settings and Configuration

Card Type	Serial
Chipset	Unidentified
I/O Options	Serial ports (2)
Data Bus	8-bit ISA

CONNECTIONS
Function	Label
Serial ports via DB-37 port	CH1
Note:Standard DB-25 serial ports are provided on an included adapter cable.

SERIAL PORT ADDRESSES
Port 1 Address		Port 2 Address	JP7
»	3F8h (COM1:)	2F8h (COM2:)	Pins 1 & 3, 2 & 4 closed
	3E8h (COM3:)	2E8h (COM4:)	Pins 1 & 3 closed
	1A0h	1A8h	Pins 2 & 4 closed

PORT 1 INTERRUPT
Setting		JP5/A	JP5/B	JP5/C	JP5/D	JP5/E	JP5/F
	IRQ2	Open	Open	Open	Open	Open	Pins 2 & 3
	IRQ3	Open	Open	Open	Open	Pins 2 & 3	Open
»	IRQ4	Open	Open	Open	Pins 2 & 3	Open	Open
	IRQ5	Open	Open	Pins 2 & 3	Open	Open	Open
	IRQ6	Open	Pins 2 & 3	Open	Open	Open	Open
	IRQ7	Pins 2 & 3	Open	Open	Open	Open	Open
Note:Pins designated are in the closed position.

PORT 2 INTERRUPT
Setting		JP5/A	JP5/B	JP5/C	JP5/D	JP5/E	JP5/F
	IRQ2	Open	Open	Open	Open	Open	Pins 1 & 2
»	IRQ3	Open	Open	Open	Open	Pins 1 & 2	Open
	IRQ4	Open	Open	Open	Pins 1 & 2	Open	Open
	IRQ5	Open	Open	Pins 1 & 2	Open	Open	Open
	IRQ6	Open	Pins 1 & 2	Open	Open	Open	Open
	IRQ7	Pins 1 & 2	Open	Open	Open	Open	Open
Note:Pins designated are in the closed position.

PORT 1 TRANSMIT DRIVER
Setting	JP1/A	JP1/B	JP1/C
Always on	Closed	Open	Open
Follows RTS signal	Open	Closed	Open
Follows bit 0 of control register	Open	Open	Closed

PORT 2 TRANSMIT DRIVER
Setting	JP2/A	JP2/B	JP2/C
Always on	Closed	Open	Open
Follows RTS signal	Open	Closed	Open
Follows bit 0 of control register	Open	Open	Closed

PORT 1 RECEIVE DRIVER
Setting	JP3
Always on	Pins 1 & 3 closed
Follows bit 1 of control register	Pins 2 & 4 closed

PORT 2 RECEIVE DRIVER
Setting	JP4
Always on	Pins 1 & 3 closed
Follows bit 1 of control register	Pins 2 & 4 closed

WAIT STATES
Setting	JP6/A	JP6/B	JP6/C	JP6/D	JP6/E
0	Closed	Open	Open	Open	Open
1	Open	Closed	Open	Open	Open
2	Open	Open	Closed	Open	Open
3	Open	Open	Open	Closed	Open
4	Open	Open	Open	Open	Closed