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RISCOM/SA

SDL COMMUNICATIONS, INC.

RISCOM/SA

Card Type

Serial

Chipset

Cirrus Logic CD2401

Maximum Onboard Memory

64KB SRAM

I/O Options

Serial ports (8)

Data Bus

16-bit ISA

CONNECTIONS

Function

Label

Function

Label

RS-232 or RS-422 serial ports via DB-78 connector

J2

RS-232 or RS-422 serial ports via 100-pin Centronics connector

J3

Note:Standard DB-25 serial ports are provided on an included DB-78 adapter cable or 100-pin Centronics breakout box.

The serial port connectors J2 and J3 are located on a daughterboard of the main card. Either of the daughterboard cards may be used. The exact size of the daughterboard and the location and type of the daughterboard connectors are unidentified.

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Factory configured - do not alter

SW1/7

On

Factory configured - do not alter

SW1/8

On

INTERRUPT SELECTION

Setting

J1/A

J1/B

J1/C

J1/D

J1/E

J1/F

J1/G

J1/H

 

IRQ3

Closed

Open

Open

Open

Open

Open

Open

Open

 

IRQ4

Open

Closed

Open

Open

Open

Open

Open

Open

IRQ5

Open

Open

Closed

Open

Open

Open

Open

Open

 

IRQ7

Open

Open

Open

Closed

Open

Open

Open

Open

 

IRQ10

Open

Open

Open

Open

Closed

Open

Open

Open

 

IRQ11

Open

Open

Open

Open

Open

Closed

Open

Open

 

IRQ12

Open

Open

Open

Open

Open

Open

Closed

Open

 

IRQ15

Open

Open

Open

Open

Open

Open

Open

Closed

BASE I/O ADDRESS SELECTION

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

 

000h

On

On

On

On

On

On

 

010h

Off

On

On

On

On

On

 

020h

On

Off

On

On

On

On

 

030h

Off

Off

On

On

On

On

 

040h

On

On

Off

On

On

On

300h

On

On

On

On

Off

Off

 

3B0h

Off

Off

On

Off

Off

Off

 

3C0h

On

On

Off

Off

Off

Off

 

3D0h

Off

On

Off

Off

Off

Off

 

3E0h

On

Off

Off

Off

Off

Off

 

3F0h

Off

Off

Off

Off

Off

Off

Note: A total of 64 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/6 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: SW1/6=512, SW1/5=256, SW1/4=128, SW1/3=64, SW1/2=32, SW1/1=16. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0)