NATIONAL INSTRUMENTS

PC-DIO-24

Card Type

Digital I/O card

Chip Set

OKI

I/O Options

50-pin interface

Data Bus

16-bit ISA

Card Size

Half-length, full-height

CONNECTIONS

Function

Label

50-pin interface

J1

BASE I/O ADDRESS SELECTION

Setting

U2/1

U2/2

U2/3

U2/4

U2/5

U2/6

U2/7

U2/8

100h

Off

On

On

On

On

On

On

On

200h

On

Off

On

On

On

On

On

On

»210h

Off

On

On

On

On

Off

On

On

300h

Off

Off

On

On

On

On

On

On

400h

On

On

Off

On

On

On

On

On

EF00h

Off

Off

Off

Off

On

Off

Off

Off

FB00h

Off

Off

On

Off

Off

Off

Off

Off

FD00h

Off

On

Off

Off

Off

Off

Off

Off

FE00h

On

Off

Off

Off

Off

Off

Off

Off

FF00h

Off

Off

Off

Off

Off

Off

Off

Off

Note:

A total of 255 base address settings are available. The switches are a binary representation of the decimal memory addresses. U2/8 is the Most Significant Bit and switch U2/1 is the Least Significant Bit. The switches have the following decimal values: U2/8=32768, U2/7=16384, U2/6=8192, U2/5=4096, U2/4=2048, U2/3=1024, U2/2=512, U2/1=256. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

INTERRUPT ENABLE LINE SELECTION

Line

W1/A

W1/B

W1/C

W1/D

PC2

Open

Open

Closed

Open

»PC4

Open

Closed

Open

Open

PC6

Closed

Open

Open

Open

N/C (disabled)

Open

Open

Open

Closed

PARALLEL PORT INTERRUPT SELECTION

IRQ

W2/A

W2/B

W2/C

W2/D

W2/E

W2/F

3

Closed

Open

Open

Open

Open

Open

4

Open

Closed

Open

Open

Open

Open

»5

Open

Open

Closed

Open

Open

Open

6

Open

Open

Open

Closed

Open

Open

7

Open

Open

Open

Open

Closed

Open

9

Open

Open

Open

Open

Open

Closed