National Instruments PC-DIO-96 About This Manual

ix PC-DIO-96 User Manual

About This Manual

This manual describes the mechanical and electrical aspects of the PC-DIO-96 and contains

information concerning its operation and programming. The PC-DIO-96 is a 96-bit parallel

digital I/O interface designed around four OKI Semiconductor (OKI) 82C55A programmable

peripheral interface (PPI) chips. The PC-DIO-96 also includes an Advanced Micro Devices

(AMD) 8253 counter/timer which can be used to send periodic interrupts to the host system. The

PC-DIO-96 is a member of the National Instruments PC Series of PC I/O Channel expansion

boards for the PC computer family. These boards are designed for high-performance data

acquisition and control for applications in laboratory testing, production testing, and industrial

process monitoring and control.

This manual describes installation, theory of operation, and basic programming considerations

for the PC-DIO-96. The example programs included are written in C and assembly language.

The PC-DIO-96 User Manual is organized as follows:

•Chapter 1, Introduction, describes the PC -DIO-96, lists what you need to get started,

describes software programming choices, optional equipment, and custom cables, and

explains how to unpack the PC-DIO-96.

•Chapter 2, Configuration and Installation, describes the PC-DIO -96 jumper configuration,

installing the PC-DIO-96 board in your computer, signal connections to the PC-DIO-96

board, and cabling instructions.

•Chapter 3, Theory of Operation, explains the basic operation of the PC -DIO-96 circuitry.

•Chapter 4, Register-Level Programming, describes in detail the address and function of each

of the PC-DIO-96 control and status registers. This chapter also includes important

information about register-level programming the PC-DIO-96.

•Appendix A, Specifications, lists the specifications of the PC-DIO-96.

• Appendix B, OKI 82C55A Data Sheet, contains the manufacturer data sheet for the

OKI 82C55A (OKI Semiconductor) CMOS programmable peripheral interface. This

interface is used on the PC-DIO-96 board.

• Appendix C, AMD 8253 Data Sheet, contains the manufacturer data sheet for the AMD 8253

integrated circuit. This circuit is used on the PC-DIO-96 board.

•Appendix D, Customer Communication, contains forms you can use to request help from

National Instruments or to comment on our products.