M. A. D. Software

Last updated 7-Feb-2017

Welcome to the M. A. D. Software Web Page and thank you for your interest in our products and services.

M. A. D. Software develops, sells and supports hardware upgrades and software for various systems, including the classic Tandy TRS-80 computer systems like the Model 4/4D/4P.

We also offer media transfer, replacement disk and other services.

Product Category Index

Below, you will find a summary of contents for the catalog itself.

HBUILD6 Boot Model 4/4D/4P systems directly from a hard disk drive.
XROM Enhanced Boot ROM for non-gate-array Model 4 systems
XDROM Enhanced Boot ROM for gate-array Model 4 and 4D systems
4P-ROM Enhanced Boot ROM for Model 4P systems
Utility Disk #1 Utilities for the LS-DOS 6 operating system
Replacement Diskettes Replacement Diskettes
LS-DOS 6.3.1 Source Code Complete LS-DOS 6.3.1 Source Tree and assembly tools
XLR8SET Source Code Source Code for XLR8SET
ROMs and PALs Various ROMs, PALs and other parts used in the Model I/III/4/4D/4P systems


Visit this list of rare and one-of-a-kind items that we found in the garage, closets or an enthusiasts's estate that we hope someone wants!

Ordering Information

Go here to find out how to place an order and how to contact us

Copyright 1988, 1992, 1996, 1998, 2000, 2001, 2002, 2004, 2007, 2008, 2009, 2011-2017 M. A. D. Software, All Rights Reserved.
MADSOFT is a trademark of M. A. D. Software.

HTML 4.01 compliant.