Circuit Cellar Ink 54
January 1995

Table of Contents

2 Ken Davidson	Editor's INK It's Only Skin Deep
6	Reader's INK Letters to the Editor
8 Harv Weiner	New Product News
14 David Rees-Thomas	Simulating Microprocessor Instructions in C Although burning EPROMs no longer costs a bundle, it still takes time and isn't very efficient for debugging. To cut labor costs and better learn the micro he's using, David creates his own simulator. Download: SIMC.ZIP
20 Hank Wallace	No Emulator? Try a One-wire Debugger A bug the night before a tradeshow drives Hank to invent his own debugger which scans for the smallest bit in a data burst and outputs the bitstream to the printer. He admits it's not an emulator, but in a pinch... Download: ONEWIRE.ZIP
24 Steven Kubis	Using Spreadsheets to Simulate Digital Filters Who says spreadsheets are just a financial tool? Steven proves otherwise. Cells easily accomodate input data and subsequent calculations of the output signal. Voila, your spreadsheet is a digital filter.
28 Art Sobel	A RISK Designer's New Right ARM Writing Code for the ARM Processor After an introduction to the ARM and its hardware in the October and December issues, Art wraps up his three-part series with the fundamentals of ARM software. Listen in for some good "how tos." Download: ARMUCOS.ZIP DEMON600.ZIP
42 Ed Nisley	Firmware Furnace Journey to the Protected Land: Serious CISC Meets the Taskettes This month, Ed introduces us to fundamental multitasking using the '386's features. And, once he has that going right, he takes out his stop watch to measure just how long the task switch takes. Download: FF54.ZIP
50 Jeff Bachiochi	From the Bench Getting By With Next to Nothing: Micro-power Wake-up Control You'd think with this lean, mean, wake-up machine that there'd be no eggs and bacon. But, with the right power management, a lot can be done on very little. Download: FTB54.ZIP
Home Automation & Building Control 60 David Gaddis	Multimedia Home Networks Forget rewiring. Use your existing coax cable system to create a first-class, whole-house entertainment system that includes a multimedia computer and is on a budget you can afford.
Home Automation & Building Control 69 Steve Ciarcia	HCS Hard-wire Control: Back to Basics The HCS II accomplishes lots of goals -- ease of use, energy savings, security, and automation. But, you've got to know how to make connections to real-world devices for it to be effective. For this, Steve takes us back to the basics, reminding us of how to do fundamental hard-wired connections.
Home Automation & Building Control 81 Jeff Fisher	A Different Set of House Keys Making the Most of a Small Keyboard Designing a hand-held IR remote for doing general-purpose home automation is no small feat. Jeff discusses the design issues involved, presents some options, and settles on a set of features for the "ultimate" remote.
Home Automation & Building Control 87 Robert M. Luzensky Jack Ivey	, Computer, Get That Phone A PC-based Voice-Telephone Interface Robert and Jack dream of viewing a movie free of telemarketing interruptions. With the new DS2132A Digital Answering Machine Processor, the realization of such a dream is much closer. Download: PCVC_V10.ZIP
100 Tom Cantrell	Silicon Update UFO Alert! The old 8051, despite its popularity, is losing ground to current competition. Philips is fighting back. Their new "8051s" wear the same 8-bit jacket, but underneath lies a 16-bit ALU, register set, and bus interface.
108 John Dybowski	Embedded Techniques Micros Behind Bars To gain a better understanding of how bar code works, John picks one apart. He then looks at the hardware and firmware required to get a real microcontroller decoding real bar code. Download: BAR.ZIP
97	Advertiser's Index
115 Ken Davidson	ConnecTime -- Excerpts from the Circuit Cellar BBS
128 Steve Ciarcia	Steve's Own INK Hat Dance

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