Welcome to the unofficial CP/M web site.

This site is authorized by Caldera, Inc. to distribute vintage software produced by Digital Research, Inc., INCLUDING THE ORIGINAL SOURCE CODE. Be sure that you examine the license agreement. When you download files from this site, you indicate that you accept the terms of this agreement.

This site will be a clearing house for CP/M software. That's the good news. Now the bad news. What original source you will find on this site is all there is! The rest has been lost to the ages for one reason or another.

This site is user supported. That means that much (most) of the software posted here was donated by various individuals. The postings on this site are not yet complete. It is the goal of this site to be able to post every operating system, compiler, and utility that Digital Research produced for the 8080, Z80, Z8000, and 68000 processors (assuming we can find it).

This site is dedicated to the early days of microcomputing. Digital Research produced operating systems, utilities, and language products for early microporcessor systems. These systems included such microprocessors as the 8080, Z80, 68000, Z8001, and 8086/8088. The workhorse of the operating system for these systems was CP/M. A more advanced operating system, MP/M, allowed multi-tasking and multi-user, systems to be built.


You will find manuals for many of the Digital Research software products here. They are mostly in Postscript format


Get the binary for Digital Research software here.


What source code we have is here.

Some SHAREWARE is available here.

SMALL C for various platforms is available here.

8080/Z80 emulators

8080/Z80/Z280 CP/M emulators for PC's, and Macintosh 68K systems.

Last updated : 06/20/2001 See Check out WHAT'S NEW to see what's just been added.

About our host.

Our host is Mrs. Gaby Chaudry. She is 37 yrs old and a passionate computer collector. In 1998 she founded the German CP/M User's Group and is co-organisor of the so-called Z-Fest, an annual meeting of CP/M and 8 bit enthuasiasts in Germany. Her site is http:// www.gaby.de or http://www.z80.de (which is simply a synonym). It hosts a virtual exhibition of her private computer collection, a little CP/M information center (both available in German and English), the homepage of the CP/M User's Group Germany (www.cpmclub.de), the Z-Fest homepage (www.zfest.de), a mirror (or better a copy, because it isn't updated any more) of the ZNODE 51 BBS (ftp://gaby.de/pub/cpm/znode51 or www.znode.de), containing 150 megs of CP/M stuff, mostly for Z-Systems, and the homepage of the Sinclair Spectrum Profi Club Cologne, to whom she donated the domain www.womoteam.de. Here is a link to her main website : www.z80.de/ehome.htm. This is the English starting page and from there you can reach all other parts of her website.

Do you have questions about this site? Check out our FAQ.

You can contact me at :Tim Olmstead