#Edito

TABLE OF CONTENTS

[author : Myron L. Pulier]

Inspired by Daniel Lee’s "Fast Circle Routine" (May 1983 DDJ, No. 79), these circle-generation programs use Applesoft BASIC and assembly language to provide greater speed for Apple users. Two other DDJ readers also submit their amplifications on Lee’s algorithm.

[author : Ian Ashdown]

Want to teach your "antique" terminal to do direct cursor addressing? This author has developed a conversion program that’s easy to implement on your CP/M system.

[author : Loren Amelang]

Tired of paying someone else a bundle of money to analyze and repair your faulty disk drive? Let this author show you how a program and Dysan’s DDD can help you make your own diagnoses, without an oscilloscope or other fancy equipment.

[author : Michael L. Simon]

Here’s how one author used a phase-locked loop to create a programmable frequency synthesizer. Using a spare counter/timer channel on a single-board computer, the configuration can multiply frequencies exactly.

[author : Dave Cortesi]

A brief look at two new computer columnists

[author : Anthony Skjellum]

How Unix-type environments can lead to non -interactive and user-unfriendly software

[author : Robert Blum]

Solutions to interfacing a hard disk within a CP/M environment, and how to speed up SUBMIT file truncation

[author : Ray Duncan]

A look at the new MS-DOS EXEC function — a powerful "Unix-like" modification which should work well in a multi-tasking environment

[author : Michael Favitta]

[author : Gene Head]

[author : Michael Wiesenberg]