Parallel Port Complete Programming,

This detailed guide for programmers, developers, and computer enthusiasts shows how to get the most from parallel port in any application or project. The Visual-Basic code and circuit designs include examples that use the new enhanced (EPP) and expanded (EPC) modes.

Jan Axelson has written dozens of articles for technical publications including Embedded Systems Programming, EDN, and Circuit Cellar. She is the author of USB Complete and Serial Port Complete. She lives in Madison, Wisconsin.

Introduction

ix

Essentials

1

(16)

Defining the Port

1

(3)

System Resources

4

(2)

Configuring

6

(3)

Port Hardware

9

(2)

Multiple Uses for One Port

11

(2)

Alternatives to the Parallel Port

13

(4)

Accessing Ports

17

(22)

The Signals

17

(7)

Addressing

24

(2)

Direct Port I/O

26

(5)

Other Ways to Access Ports

31

(8)

Programming Issues

39

(14)

Options for Device Drivers

39

(6)

Speed

45

(8)

Programming Tools

53

(32)

Routines for Port Access

53

(7)

A Form Template

60

(25)

Experiments

85

(20)

Viewing and Controlling the Bits

85

(14)

Cables & Connectors for Experimenting

99

(1)

Making an Older Port Bidirectional

100

(5)

Interfacing

105

(24)

Port Variations

105

(5)

Interfacing Guidelines

110

(2)

Cable Choices

112

(12)

Port-powered Circuits

124

(5)

Output Applications

129

(20)

Output Expansion

129

(3)

Switching Power to a Load

132

(11)

Signal Switches

143

(5)

Displays

148

(1)

Input Applications

149

(16)

Reading a Byte

149

(5)

Reading Analog Signals

154

(11)

Synchronous Serial Links

165

(18)

About Serial Interfaces

165

(1)

A Digital Thermometer

166

(17)

Real-time Control

183

(20)

Periodic Triggers

183

(6)

Triggering on External Signals

189

(14)

Modes for Data Transfer

203

(20)

The IEEE 1284 Standard

203

(4)

Detecting Port Types

207

(3)

Negotiating a Mode

210

(2)

Controller Chips

212

(8)

Programming Options

220

(3)

Compatibility and Nibble Modes

223

(26)

Compatibility Mode

223

(5)

Nibble Mode

228

(4)

A Compatibility & Nibble-mode Application

232

(17)

Byte Mode

249

(18)

Handshaking

249

(1)

Applications

250

(17)

Enhanced Parallel Port: EPP

267

(18)

Inside the EPP

267

(2)

Handshaking

269

(6)

EPP Variations

275

(2)

An EPP Application

277

(8)

Extended Capabilities Port: ECP

285

(20)

ECP Basics

286

(3)

ECP Transfers

289

(7)

Other ECP Modes

296

(2)

An ECP Application

298

(7)

PC-to-PC Communications

305

(28)

A PC-to-PC Cable

305

(1)

Dos and Windows Tools

306

(5)

A PC-to-PC Application

311

(12)

Appendices

A Resources

323

(4)

B Microcontroller Circuit

327

(2)

C Number Systems

329

(4)

Index

333

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Parallel Port Complete Programming, Interfacing, & Using the PC’s Parallel Printer Port

Summary

Author Biography

Table of Contents

Supplemental Materials