Lpc2000

> As a general suggestion, try and get something very simple working, 

If you want an example of some simple code, and a better
understanding of what the tools are doing for you, take a
look at:

http://www.ovro.caltech.edu/~dwh/ucos/project_AR1803.pdf
http://www.ovro.caltech.edu/~dwh/ucos/gcc_and_ucosii.zip

The uCOS port has some assembler code, os_cpu_a.s, which
is an example of how to make assembler functions visible
to C code and vice versa.

Cheers,
Dave