Seeking for pointers about creating a custom GNAT runtime

["Yannick Duchêne (Hibou57)" <yannick_duchene@yahoo.fr>]

Hi all happy Ada prose authors,

I am seeking for some pointers, basic advices, about creating a custom  
runtime for GNAT.

That's basically for a kind of toy for me: a minimal bootable environment  
in which I will mainly play with some assembly and run some experiment.  
However, I will also need a minimal environment, like a minimal text  
editor and a minimal terminal emulation, among others fundamental stuff,  
and don't feel OK doing this in either assembly or C. Note that I am not  
announcing a new OS in Ada, I'm not that silly, that's just planed to be a  
toy for some personal experiments.

Any pointers welcome. I am not expecting anyone to do the stuff for me,  
just pointers.

I find this:
http://www.iuma.ulpgc.es/users/jmiranda/gnat-rts/index.htm
While not sure that's what I need, and above all, it seems outdated (GNAT  
3.15p is from the medieval times of GNAT).

-- 
“Syntactic sugar causes cancer of the semi-colons.” [1]
“Structured Programming supports the law of the excluded muddle.” [1]
[1]: Epigrams on Programming — Alan J. — P. Yale University