Circuit Cellar Ink 62
September 1995

Table of Contents

2 Janice Marinelli	Editor's INK Mark That Horse
6	Reader's INK Letters to the Editor
8 Harv Weiner	New Product News
12 Ed Lansinger	Developing and Engine Control System Part 1: System Architecture and Fuel Delivery Even though virtually all of today's automobiles have multiple computers under the hood, designing those computers is no trivial task. In this first article, Ed gives us a hand with the fuel-delivery system.
20 Stuart Ball	Embedded Debugging Tricks When designing an embedded controller, the ability to get feedback from the system during debugging is usually limited. Drawing from years of experience, Stuart reveals his tricks for getting rid of pesky bugs.
24 Gordon Dick	Designing an Industrial-grade XYZ Router Table Gordon walks us through a start-to-finish project for a computer-controlled 3D router table. He deals with both the mechanics and electronics necessary for controlling router movement.
32 Ed Nisley	Firmware Furnace Journey to the Protected Land: Entering Virtual-86 Mode According to Ed, any successful PC operating system must run DOS programs dating back to the original PC. Ed traces through the complex architecture to show you how '86 compatibility takes place. Download: FF62.ZIP
40 Jeff Bachiochi	From the Bench Creating the SMART-MD: DC Motor Control for the I2C Bus Want to take control of DC motors without using a lot of I/O bits? Here, Jeff integrates National's H-bridge motor driver with the I2C and PWM functions of Microchip's PIC16C73. Download: FTB62.ZIP
Embedded PC 48	Nouveau PC
Embedded PC 54 Stefano Chiti-Batelli	An ISA Bus Simulator You could simply plug in your prototype. However, design flaws can prevent operation or cause permanent damage. Stefano's ISA bus simulator gives the engineer more control over the development and test process. Download: BUSSIM.ZIP
Embedded PC 62 David Prutchi	Hot Swapping on the PC An Active Extender Card for the 16-bit PC-ISA Bus Nothing is worse than powering the motherboard up and down to test a development board. Design flaws at best can prevent operation and at worst cause permanent damage. Join David in looking at a safer, faster solution. Download: HOTSWAP.ZIP
Embedded PC 72 Rick Lehrbaum	PC/104 Quarter Constructing PC/104-based Systems From plug-in memory cards for portables, PCMCIA has grown to include hard disk drives, fax/modems, and other peripherals. Its use in the embedded world is gaining popularity, especially with the new PC/104 offerings.
Embedded PC 76 Russ Reiss	Applied PCs Embedded PCs: Who, What, Where, Why, When, and How? If you want to install embedded PCs, you've got to start at the beginning -- outlining the basics and making sure everyone is speaking the same language. Subsequent columns will delve into the nitty gritty of embedding a PC.
84 Tom Cantrell	Silicon Update IC de Light Texas Instruments boasts the first and only light-to-frequency converter which integrates a photodiode with signal conditioning so that it produces digital input. Curious? Then, put your wager with Tom.
88 John Dybowski	Embedded Techniques Power Management with the DS87C530: Part 2: The Software John wraps up his column with a focus on the software and firmware issues of DS87C530 applications. Using a data-logging example, he shows how to take advantage of its power-management capabilities. Download: ET62.ZIP
81	Advertiser's Index
99 Ken Davidson	ConnecTime -- Excerpts from the Circuit Cellar BBS
112 Steve Ciarcia	Steve's Own INK Welcome to Gambleticut

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