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The following are some simple programs for MS-DOS I developed in the 1980s and early 1990s. In many cases, I released the code into the public domain, to help others in the same way I was helped by ready availability of source code.
Ask v1.1c
- A utility for asking questions in batch files, with support for an optional time-out. Written in assembly language.
- A collection of reviews of the programming language AWK. One review covers the language itself; another, various implemtnations of AWK for DOS.
- A filter for processing files with embedded ASA carriage controls; eg, from an IBM mainframe running MVS or CMS. Written in C.
- A utility to display the current date and time. Useful for logging actions in batch files. Written in assembly language.
- A no-frills digital clock for DESQview. It runs in a 20K window and uses very little CPU time. Written in C and requires DVLib.
- A library of functions for working with the DESQview API from C or assembly language. Written in assembly language.
- A simple utility to reduce the amount of conventional DOS memory available to programs. Useful for testing DOS programs that must run with a small footprint. Written in assembly language.
- A utility to report the return code of the preceding program. Note: the technique used here will work with only selected versions of DOS. Written in assembly language.
- A random quote generator that reads quotes from a plain text file. Written in C.
- A commandline editor and history TSR. Written in assembly language.
- A utility to ring the console bell, optionally on error. Written in assembly language.
You're welcome to retrieve the programs here and use them; each is available as a ZIP file. Understand, however, that free software has its drawbacks - in this case, that means no support! Write if you must, but most likely I will simply file away your note. You have the source, and I'd like to think the code is well-commented. If you're having trouble, delve into it and see if you can make whatever mods you need.