Circuit Cellar Ink 72
July 1996

Table of Contents

2 Ken Davidson	Task Manager An Exterminator's Dream
6	Reader I/O Letters to the Editor
8 Harv Weiner	New Product News
14 Jerry Merrill	Alternative Debugging Techniques Debugging is not easy. Processors may be too old, new, or fast for ICEs or a project too low profile and short term to warrant the expense. So, try processor-independent hardware-assisted debugging.
26 Graham Moss Ross McMillan Ken Mardle	In-Circuit Emulators Part 1: Development Tool Options Debugging code for an embedded controller can be a nightmare. So, when the sweat is really breaking across your brow, it's handy to have the latest on what types of debugging tools are available.
34 Jim Sibigtroth	A Single-Wire Development Interface The speed, pin count, and external addressing of new MCUs defeat old debugging methods. Jim overcomes such problems with the new single-wire background debug mode interface on Motorola's latest.
40 Arvind Rana	Designing with Flash Memory After bringing us up-to-date with what flash is and when it's used, Arvind probes the hardware and software issues related to designing with flash. The big issues come down to proper software algorithms.
50 Bob W. Meister	LSI-11 Simulator on a Personal Computer This simulator faithfully executes the PDP instruction set and DEC's RT-11 single-user OS. It supports floppy and hard disks, line printers, clocks, console input and output.... It even runs at the same speed. Download: LSI11.ZIP
58 Ed Nisley	Firmware Furnace 80x86 Performance: Touring the CPU Spectrum Last month, Ed showed how all the CPU horsepower in the world won't help a program that doesn't do much computing. This time, he burns CPU while doing hardly any I/O at all. Finally, he gets results more in line with the marketing hype.
68 Jeff Bachiochi	From the Bench Hard Facts About Soft Ferrites Fabricated magnetic materials mystify most. Jeff explains the differences between hard and soft ferrite. He closes with an overview of its use in power supplies, EMI and RFI beads, power inductors and transformers, torroids, and baluns.
74 Tom Cantrell	Silicon Update Flight of the Phoenix Zilog has risen from its ashes. It offers the S180 processor along with an evaluation/emulation board. Ironically, it's a chip off the old Z80, CTC, PIO, and SIO, the cornerstones of Zilog's glory in the 1970s.
65	Advertiser's Index
81 Ken Davidson	ConnecTime -- Excerpts from the Circuit Cellar BBS
96 Steve Ciarcia	Priority Interrupt Debugging -- Not a Committee Experience

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