© National Instruments Corporation D-1 PC-DIO-24/PnP Use r Manual

Using Your PC-DIO-24

(Non-PnP) Board

Appendix
D
This appendix describes the differences between the PC-DIO-24 and
PC-DIO-24PnP boards, the PC-DIO-24 board configuration, and the
PC-DIO-24 installation into your computer. Read this appendix only if
you do not have the Plug and Play version of the board.

Differences between the PC-DIO-24PnP and

the PC-DIO-24

The PC-DIO-24PnP is a Plug and Play upgrade from a legacy board, the
PC-DIO-24. Legacy board refers to a board with switches and jumpers
used to set the addresses and interrupt levels. The original legacy board
was replaced with a backwards-compatible, revised PC-DIO-24 that has
many of the new features of the Plug and Play version. The following
list compares the specifications and functionality of the newer boards
with the original legacy board. This document applies only to the
revised PC-DIO-24/PnP board.
Table D-1. Comparison of Characteristics
Specification Original PC-DIO-24 Revised PC-DIO-24 PC-DIO-24PnP
I/O base address
selection Uses switches Uses switches Plug and Play
compatible
Interrupt request
selection Uses jumpers Uses jumpers Plug and Play
compatible
Interrupt request
enable Uses one port C line
(jumper selectable) Uses one portC line
(jumper selectable) Software-controlled
(uses interrupt control
registers)