This package contains the full source code and instructions to build Python for Nintendo DS, with a wrapper for libnds.
- Author: Lorenzo Mancini
- Email: email@example.com
- Documentation: https://github.com/develersrl/dspython/wiki
Richard Tew did the original work of porting Stackless Python 2.5 on Nintendo DS; this project is a continuation of his work. Please see README.old in this same package for a list of the original credits.
Greg Ewing is the author of Pyrex, the extension language on which dspython bases its libnds wrapper.
Preparing the environment
The following steps detail how to setup a development environment to rebuild dspython. All of the following assumes you are using a Windows O.S., but I got reports of people successfully building the project under various Linux flavors.
Please note that if you just want to write scripts with dspython and you don't want to develop dspython itself (e.g. adding new wrappers, supporting more libraries, etc...) then you should stop reading here.
Still here? Well.
Install DevkitPro's DevkitARM: this is a port of gcc compiler for the ARM CPU used in Nintendo DS and Gameboy Advance. An automated installer is available.
Select install type
devkitarm and uncheck:
- gba examples
- gp32 examples
- programmer's notepad
A gcc for the build platform is required in order to compile python. An automated installer is available.
- C Compiler
- C++ Compiler
- MSYS Basic System
- MinGW Developer Toolkit
Using pre-packaged repository catalogues (20100909)
Destination location: C:\MinGW
You need a python to build another python :) Any version will do, I use 2.6.
Extension language used to wrap libnds.
Tested with version 0.9.9.
Unpack and execute:
python setup.py bdist_wininst
this will use distutils facilities to create a nice installer in
dist/; install pyrex with such installer.
(note: I have experienced weird random crashes of dspython if cython is used instead of pyrex, but never investigated them - long story short, just use pyrex at least on your first try)
Actual building process
Execute all the following steps in the console environment created by
cd zlib-1.2.3 make
cd slp-250 sh configure --host=arm-eabi --config-cache make libpython2.5.a
make, on some machines
pgen has been reported to crash. Just ignore it.
Alter devkitarm linker settings
We need to alter linker settings so that Python gets enough stack to run on DS.
$(DEVKITARM)\arm-eabi\lib\ds_arm9.mem and change:
ewram : ORIGIN = 0x02000000, LENGTH = 4M - 4k
ewram : ORIGIN = 0x02000000, LENGTH = 4M - 260k
$(DEVKITARM)\arm-eabi\lib\ds_arm9.ld and change:
__sp_usr = __sp_irq - 0x100;
__sp_usr = __ewram_end + 0x40000;
Compile libnds wrappers
cd wrap_libnds/ make
cd NDSPython make
Create a NDSPython running environment
At this point, you should copy in the root of your homebrew storage:
NDSPython.ndsfile produced through the build process;
pythondirectory you can find in
Now, place a
main.py file in the
python directory, and run
Document how to put files in a
nitrofs, so that the
.nds file can be run in an emulator.