Digital Research CP/M Releases

Builds of CP/M based on the open source release of Digital Research code. See the licence at www.cpm.z80.de for terms and conditions.

Update 2026-06-07: The CP/M 3 HELP utility has been updated so that it also runs on CP/M 2. This version signs on as 'HELP UTILITY v1.1 pl5'. The CP/M 2 distributions now include this version of HELP and, thanks to Doug Miller, corresponding help pages for the utilities.

Update 2025-01-22: I have uploaded a new build of the CP/M 3 source with a couple of fixes to the CCP. If you are using the 101198 build with the Caldera copyright message, you should update at least the CCP to this version.

These contain source code and scripts to allow cross-compilation on Unix-like systems. To build, you will require:

From www.cpm.z80.de: The PL/M 4.0 compiler (found in plm80.zip) to build CP/M 3. To build CP/M 2 you may want to downgrade to the PL/M 3.1 compiler (found in plm80x86.zip).
Thames to run the PL/M compiler and build tools.
ZXCC to run CP/M-hosted build tools.

Version	Binary files	Source code
2.0	cpm20bin_unix.zip	cpm20src_unix.zip
2.1	cpm21bin_unix.zip	cpm21src_unix.zip
2.2	cpm22bin_unix.zip	cpm22src_unix.zip
3.1	cpm3bin_unix.zip	cpm3src_unix.zip

John Elliott 2026-06-07