CMM2 G2 design files
Manufacturing files for revision 2.0 of the Generation 2 board: the EasyEDA Pro project, Gerbers, bill of materials, placement file and a PDF.
// cd /cmm2
Colour Maximite 2
A 480 MHz STM32H743 computer that boots straight into BASIC, with VGA graphics, sound and an SD card. The firmware is being brought up to the same V7 MMBasic interpreter as the PicoMite, and one firmware file runs on both the G1 and G2 boards.
V7.00 RC6latest release, Nov 2026
18video modes
G1 + G2one firmware file
MMBasic V7 for the CMM2
The CMM2V1.5 tree ports the PicoMite's V7 interpreter back to the Colour Maximite 2, and adds features that make use of the STM32H7's speed and memory:
- Loadable C/C++ programs: MicroPython, Doom, Heretic, ScummVM, a NES emulator and a 386 PC emulator that runs DOS and Windows 3.1
- A C compiler that runs on the machine
- SQL databases (SQLite) from BASIC
OPTION PICOMITEruns PicoMite VGA and HDMI programs unchanged- USB touch screens with an on-screen keyboard, stepper-motor control, and an FM synth that plays MIDI
- The CMM2's 18 video modes, 3D engine, sprites and CAN bus, all kept
It builds with CMake, Ninja and the GCC from STM32CubeIDE, and is flashed with an ST-Link.
Manuals
PDFs in the CMM2V1.5 repository.
- User ManualMMBasic V7 on the Colour Maximite 2
- C CompilerCompiling C on the machine
- Loadable ProgramsWriting and running C/C++ programs
- App User GuideThe bundled applications
- 386 PC EmulatorRunning DOS and Windows 3.1
- Stepper ReferenceMotor control commands
Hardware and related work
zeptoforth on the M7
Contributions to zeptoforth, a Forth for Cortex-M chips: double-precision floating-point instructions for its assembler, and cache cleaning after compiling on the Cortex-M7. Both changes were merged upstream.