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neo6502-firmware

Firmware and emulators for the Neo6502 retro-computer

The home page

All the documentation currently resides at.

Releases

The release tarballs contain pre-built firmware, emulators for windows and *nixes, scripts, utilities, documentation, and examples/demos of BASIC, C, and assembly programs.

Compilation

Sources

Note that to build the firmware, additional third-party sources are required. If not supplied, these will be downloaded automatically at build-time. These are not needed to build the emulators however. The automatic downloads, and the 'git' dependency may be avoided by collecting these sources manually.

Then explode the tarballs and set the following variables in the environment:

$ export PICO_SDK_FETCH_FROM_GIT=OFF
$ export PICO_SDK_PATH=/path/to/picosdk_sources
$ export PICO_TINYUSB_PATH=/path/to/tinyusb_sources
$ export PICO_DVI_PATH=/path/to/picodvi_sources
$ export PICO_FATFS_PATH=/path/to/picofatfs_sources

Dependencies

  • 'build-essential', 'base-devel', or equivalent (GCC for *nix binaries)
  • 'x86_64-w64-mingw32-g++', or equivalent (GCC for windows binaries)
  • 'gcc-arm-none-eabi' (GCC for ARM binaries)
  • 'arm-none-eabi-newlib' (C stdlibs for bare-metal ARM target),
  • '64tass' (6502 assembler)
  • 'cmake'
  • 'libsdl2-dev', 'sdl2', or equivalent (SDL2 development libraries)
  • 'python3'
    • 'pillow'
    • 'gitpython'
    • 'pyserial' (not needed at build-time - optional for uploading files via serial port)

All of the sources and dependencies are freely available.

Most distros have the dependencies packaged. Firmware has been successfully built on Arch, Fedora, Ubuntu, Debian and Solus.

  • Arch and derivative distributions:
    The 64tass assembler is in the Arch AUR (or can be downloaded and compiled from the repository) (https://aur.archlinux.org/packages/64tass).

    • Firmware only:
      $ sudo pacman -S arm-none-eabi-gcc arm-none-eabi-newlib cmake
      
    • *nix emulator only:
      $ sudo pacman -S python-gitpython python-pillow sdl2 zip
      
    • Windows emulator only:
      $ sudo pacman -S mingw-w64-gcc python-gitpython python-pillow sdl2 zip
      
    • Everything (firmware, all emulators, documentation, examples, demos, etc):
      $ sudo pacman -S arm-none-eabi-gcc arm-none-eabi-newlib cmake git mingw-w64-gcc python-gitpython python-pillow sdl2 zip
      
  • Debian/Ubuntu and other similar distributions (.deb):

    • Firmware only:
      $ sudo apt install build-essential cmake gcc-arm-none-eabi libnewlib-arm-none-eabi libstdc++-arm-none-eabi-newlib
      
    • *nix emulator only:
      $ sudo apt install 64tass build-essential cmake libsdl2-dev python3 python3-pip zip
      
    • Windows emulator only:
      $ sudo apt install 64tass build-essential cmake g++-mingw-w64-x86-64 libsdl2-dev mingw-w64 python3 python3-pip zip
      
    • Everything (firmware, all emulators, documentation, examples, demos, etc):
      $ sudo apt install 64tass build-essential cmake g++-mingw-w64-x86-64 gcc-arm-none-eabi git libnewlib-arm-none-eabi libsdl2-dev libstdc++-arm-none-eabi-newlib mingw-w64 python3 python3-pip zip
      

Build

Build the firmware only:

$ make firmware

Build the windows emulator only:

$ make windows

Build the *nix emulator only:

$ make linux

Build the mac emulator only:

$ make macos

Build everything (firmware, all emulators, examples, demos, etc):

$ make

Uploading Firmware

At the time of writing, to use openocd to upload with CMSIS-DAP v2 (which is Pico based programmers) requires it to be built from source, which often has libusb1 as a dependency (without this it will build).