16REL IO card Settings and Configuration

Card Type

Parallel card

I/O Options

parallel ports (2)

Data Bus

8-bit ISA

CONNECTIONS

Function

Label

2 parallel ports via DB-37 connector

CN1

BASE I/O ADDRESS SELECTION

Address Port A

Address Port B

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

282

283

Off

On

Off

On

On

On

On

On

286

287

Off

On

Off

On

Off

On

On

Off

2EA

2EB

Off

On

Off

Off

Off

On

Off

On

2EE

2EF

Off

On

Off

Off

Off

On

Off

Off

»

302

303

Off

Off

On

On

On

On

On

On

306

307

Off

Off

On

On

On

On

On

Off

322

323

Off

Off

On

On

Off

On

On

On

38A

38B

Off

Off

Off

On

On

On

Off

On

3A2

3A3

Off

Off

Off

On

Off

On

On

On

3A6

3A7

Off

Off

Off

On

Off

On

On

Off

A total of 255 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/1 is the Most Significant Bit and switch SW1/8 is the Least Significant Bit. The switches have the following decimal values: SW1/1=512, SW1/2=256, SW1/3=128, SW1/4=64, SW1/5=32, SW1/6=16, SW1/7=8, SW1/8=4. Turn off the switches and add the values of the switches, including an additional value of 2 as a fixed setting, to obtain the correct memory address. (Off=1, On=0)

MISCELLANEOUS TECHNICAL NOTES

An optional cable is required to bring out the B side of the switches to another 37-pin connector (Port B).