DOS Compatable OS

[a.carlini at ntlworld.com]

Gary Sparkes wrote:
> I'm rather bored, so I thought I might try and hack together a small
> project OS compatable with at least DOS 1.x or similar, is there any
> decent resource for information on dos compatability and how to
> achieve it, or is it left as a reverse engineering exercise for 'the
> reader' ? :)    

Would this help http://www.freedos.org/ ?

-- 

Antonio carlini
arcarlini at iee.org