MULTI-TECH SYSTEMS, INC.

RD301PC

Card Type

Serial to network re-director

Chip Set

Unidentified

Data Bus

8-bit ISA

USER CONFIGURABLE SETTINGS

Setting

Label

Position

COM port enabled

SW1/8

Closed

 

COM port disabled

SW1/8

Open

Card enabled

SW2/8

Closed

 

Card disabled

SW2/8

Open

COM PORT ADDRESS

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

 

000h

On

On

On

On

On

On

On

 

008h

Off

On

On

On

On

On

On

 

010h

On

Off

On

On

On

On

On

 

018h

Off

Off

On

On

On

On

On

 

020h

On

On

Off

On

On

On

On

 

2E8h (COM4:)

Off

On

Off

Off

Off

On

Off

 

2F8h (COM2:)

Off

Off

Off

Off

Off

On

Off

 

3D8h

Off

Off

On

Off

Off

Off

Off

 

3E0h

On

On

Off

Off

Off

Off

Off

3E8h (COM3:)

Off

On

Off

Off

Off

Off

Off

 

3F0h

On

Off

Off

Off

Off

Off

Off

 

3F8h (COM1:)

Off

Off

Off

Off

Off

Off

Off

Note: A total of 127 COM port address settings are available. The switches are a binary representation of the hexadecimal memory addresses. SW1/7 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following hexadecimal values: SW1/7=200h, SW1/6=100h, SW1/5=80h, SW1/4=40h, SW1/3=20h, SW1/2=10h, SW1/1=8h. Turn off the switches and add the values of the switches that are off to obtain the correct COM port address. (Off=1, On=0)

BASE I/O ADDRESS

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

 

000h

On

On

On

On

On

On

On

 

008h

Off

On

On

On

On

On

On

 

010h

On

Off

On

On

On

On

On

 

018h

Off

Off

On

On

On

On

On

 

020h

On

On

Off

On

On

On

On

100h

On

On

On

On

On

Off

On

 

3D8h

Off

Off

On

Off

Off

Off

Off

 

3E0h

On

On

Off

Off

Off

Off

Off

 

3E8h

Off

On

Off

Off

Off

Off

Off

 

3F0h

On

Off

Off

Off

Off

Off

Off

 

3F8h

Off

Off

Off

Off

Off

Off

Off

Note: A total of 127 memory address settings are available. The switches are a binary representation of the hexadecimal memory addresses. SW1/7 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following hexadecimal values: SW1/7=200h, SW1/6=100h, SW1/5=80h, SW1/4=40h, SW1/3=20h, SW1/2=10h, SW1/1=8h. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0)

CARD INTERRUPT

Setting

SW3/1

SW3/2

SW3/3

SW3/4

SW3/5

SW3/6

 

IRQ2

Closed

Open

Open

Open

Open

Open

 

IRQ3

Open

Closed

Open

Open

Open

Open

 

IRQ4

Open

Open

Closed

Open

Open

Open

 

IRQ5

Open

Open

Open

Closed

Open

Open

 

IRQ6

Open

Open

Open

Open

Closed

Open

IRQ7

Open

Open

Open

Open

Open

Closed

COM PORT INTERRUPT

Setting

SW3/7

SW3/8

 

IRQ3

Closed

Open

IRQ4

Open

Closed

MISCELLANEOUS TECHNICAL NOTES

This card redirects the I/O of the COM port to a serial device elsewhere on the network.