Porting the python interpreter to a custom operating system

I am looking for resources that I could go through to port the python interpreter to a custom OS (with an implementation similar to DOS but not DOS itself). What are some important points I should keep in mind? Is the complete port of python restricted only by limitations of the OS or could there be more complexities that I might have to account for. I found http://wiki.osdev.org/Porting_Python to be useful - although, what I开发者_JS百科 do need to know is if there is any documentation about all the builtin modules and how they have been ported for each OS like Windows, Unix.

You should probably have a look at Python 2.4.2 for DOS here http://www.caddit.net/pythond/downloads.php

And also check out all the other stuff ported to DOS using the DJGPP port of gcc. In addition Python has been ported to OS\2 which is DOS-like but not DOS. I believe it may have been done using a relative of the DOS DJGPP but not sure.

Hopefully, your platform will not suffer from the complex memory models of DOS.

Also, there was something called Pippy that was a Python interpreter that ran on Palm's OS around the turn of the century. There is also PyMite and TinyPy.

http://wiki.python.org/moin/EmbeddedPython has some useful leads.