DFLEX-2 IO card Settings and Configuration

Card Type	Serial card
Chipset Controller	UART 16450 or 16550
I/O Options	Serial port (2)
Maximum DRAM	N/A

CONNECTIONS
Purpose	Location	Purpose	Location
9-pin serial port connector	CN1	*SLIM connector (Port 1 & 2)	S1
9-pin serial port connector	CN2
*Note: Serial Line Interface Module (SLIM) connectors.

SERIAL PORT 1
Setting	SW1/1
COM1 (3F8h)	On
User select	Off
Note: When SW1/1 is set in the off position refer to Serial & Status Port Address table.

SERIAL PORT 2
Setting	SW1/2
COM2 (2F8h)	On
User select	Off
Note: When SW1/2 is set in the off position refer to Serial & Status Port Address table.

SERIAL & STATUS PORT ADDRESS
Port 1	Port 2	Status port	SW1/3	SW1/4	SW1/5
200h	208h	240h	On	On	On
240h	248h	280h	On	On	Off
280h	288h	2C0h	On	Off	On
2C0h	2C8h	300h	On	Off	Off
300h	308h	340h	Off	On	On
2B0h	2B8h	288h	Off	On	Off
290h	298h	2D0h	Off	Off	On
190h	198h	1D0h	Off	Off	Off

STATUS PORT
Setting	SW1/7
Enabled	On
Disabled	Off

INTERRUPT CHANNEL A
IRQ	J1/A	J1/B	J1/C	J1/D
3	Pins 1 & 2 closed	Open	Open	Open
4	Open	Pins 1 & 2 closed	Open	Open
5	Open	Open	Pins 1 & 2 closed	Open
7	Open	Open	Open	Pins 1 & 2 closed
10	Open	Open	Open	Open
11	Open	Open	Open	Open
12	Open	Open	Open	Open
15	Open	Open	Open	Open

INTERRUPT CHANNEL A (CON’T)
iRQ	J1/E	J1/F	J1/G	J1/H	SW1/8
3	Open	Open	Open	Open	On
4	Open	Open	Open	Open	On
5	Open	Open	Open	Open	On
7	Open	Open	Open	Open	On
10	Pins 1 & 2 closed	Open	Open	Open	On
11	Open	Pins 1 & 2 closed	Open	Open	On
12	Open	Open	Pins 1 & 2 closed	Open	On
15	Open	Open	Open	Pins 1 & 2 closed	On
Note: When port 1 is configured as COM1 & port 2 is configured as COM2, SW1/8 should be in the off position. IRQ4 (COM1) should have channel A settings & IRQ3 (COM2) should have channel B settings. If only one of the first two ports is configured as COM1 or COM2, the other jumper can be moved or removed according to the requirements of the software being used.

INTERRUPT CHANNEL B
IRQ	J1/A	J1/B	J1/C	J1/D
3	Pins 2 & 3 closed	Open	Open	Open
4	Open	Pins 2 & 3 closed	Open	Open
5	Open	Open	Pins 2 & 3 closed	Open
7	Open	Open	Open	Pins 2 & 3 closed
10	Open	Open	Open	Open
11	Open	Open	Open	Open
12	Open	Open	Open	Open
15	Open	Open	Open	Open

INTERRUPT CHANNEL B (CON’T)
IRQ	J1/E	J1/F	J1/G	J1/H	SW1/8
3	Open	Open	Open	Open	Off
4	Open	Open	Open	Open	Off
5	Open	Open	Open	Open	Off
7	Open	Open	Open	Open	Off
10	Pins 2 & 3 closed	Open	Open	Open	Off
11	Open	Pins 2 & 3 closed	Open	Open	Off
12	Open	Open	Pins 2 & 3 closed	Open	Off
15	Open	Open	Open	Pins 2 & 3 closed	Off
Note: When port 1 is configured as COM1 & port 2 is configured as COM2, SW1/8 should be in the off position. IRQ4 (COM1) should have channel A settings & IRQ3 (COM2) should have channel B settings. If only one of the first two ports is configured as COM1 or COM2, the other jumper can be moved or removed according to the requirements of the software being used.

FACTORY CONFIGURED - DO NOT ALTER
Switch	Position
SW1/6	Off