[author : H.T. Gordon]

Author Gordon shows how to use the information provided by the digits of large numbers to quickly determine some things about divisibility.

[author : Chris Deppe and Alan Bartholomew]

How do you retrieve random information quickly from a large disk file? The authors discuss the principles and techniques of an elegant method called a B-Tree.

[author : Terje Bolstad]

Many C compilers for CP/M either omit or severely limit the ability to make direct calls to the BDOS and BIOS. Author Bolstad describes two functions which will allow you to incorporate such capability into your own C programs.

[author : Dan Daetwyler]

Earlier versions of PCDOS do not provide direct support for combining a quot;dot graphics" printer with the Color/Graphics Adapter. Author Daetwyler bridges the gap with this mapping utility.

[author : Simson L. Garfinkel]

While a number of implementations of Conway’s Game of Life have appeared over the years, these were usually slow. This version for the IBM PC provides both speed (up to 2.7 generations per second) and easy entry and tracking of the cells.

[author : Wendall C. Gates]

Series expansions are widely used in computers to generate precision, non-linear functions. The author presents an unusual approach which places coefficient-exponent pairs into an array, while preserving readability and access.

[author : Steven A. Ruzinsky]

In his search for a fast floating-point language, the author found an ideal in Forth. In this first of a three-part series, he presents some fundamental Forth matrix utilities.

[author : Do-While Jones]

They said it couldn’t be done.... Taking up the challenge from our Letters column, the author shows how you can get a trace through your BDOS.

[author : Gordon King]

Use of a Julian date system allows dates to be stored on computers as integers, but there must be a way to convert between Julian and normal calendar notation. The author presents routines for implementing such a system on your micro.

[author : Dave Cortesi]

PC Still Backward, CP/M Plus, sector buffering, the BCB, and more.

[author : Ray Duncan]

8088 Addressing Modes, 8088 Line Generator, PC-TALK III

[author : Robert Blum]

Public domain software, SD-44, and more on CP/M Plus

[author : Michael Wiesenberg]