Circuit Cellar Ink 70
May 1996

Table of Contents

2 Ken Davidson	Task Manager 'Round and 'Round We Go
6	Reader I/O Letters to the Editor
8 Harv Weiner	New Product News
14 Francis Deck	A Simple DSO Circuit for the Macintosh Desgining a digital sampling oscilloscope for a Mac can be a nightmare. There's no inexpensive MCU fast enough. So, Francis designed his own interface using some clever money-saving techniques. Download: DOSPIC.ZIP DSOSEA.HQX
20 William Rogers	Autorouter and Board Layout Software Tool Analysis Board design can be a monumental task. Working out an automated path gives greater project control and faster turnaround time. Choosing the correct autorouter is what this analysis is all about.
30 Michael R. Smith	The Evaluation Board Saga Continues Low-Cost Educational Tools Strapped by ongoing budget cuts, Mike struggles to get the resources he needs to teach his students without limiting them to convoluted freeware. With SDS's demo program, he hits pay dirt. Read on for details.
36 Doron Hendel Rowena Turner	The Embedded Sun Part 2: Exploiting the Microkernel Doron and Rowena are quick to showus that using the Chorus OS is simple. It lets developers write applications or use UNIX and other operating systems that work directly on top of the microkernel.
42 Willard Dickerson	Vehicular Control Multiplexing with CAN and J1850 Part 2: Application to Motorola Embedded Controllers Willard looks at the Motorola controllers carrying CAN and J1850 protocols. After giving an overview of the chip's features, he presents the CPU, mux, and physical interfaces, and protocol handler with examples.
52 Ed Nisley	Firmware Furnace 80x86 Performance: Probing the Cache Building on last month's foundation, Ed loks at the CPU cache in more detail. After overviewing the hardware, he makes a point of pulling out of it all the timing information he can.
62 Jeff Bachiochi	From the Bench Handcrafting Design Ideas It's back to basics. Jeff walks through the fundamentals of solderless breadboards, wire wrapping, and point-to-point wiring. There are tips and techniques to every trade, even at the level of fundamentals.
68 Tom Cantrell	Silicon Update Fuzzy PID-Pong: The Final Chapter In INK 67, Tom told us the latest on Adaptive Logic's AL220, a fuzzy-logic chip. Last month, he put it through its paces with the PID-Pong machine. This month, he reviews its development tools, ruleware, and performance.
65	Advertiser's Index
81 Ken Davidson	ConnecTime -- Excerpts from the Circuit Cellar BBS
96 Steve Ciarcia	Priority Interrupt An Inventing Experience

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