Debug Assembly under DOS

Hi /prog,

is there some simple tool to debug DOS assembly? I need it for school project.

I am using Linux and i will test and (probably) debug code in dosbox.

Thanks.

>>10 there is 4chan and there is anonymous. Funny thing is 4chan made anonymous because as far as I could see the site was getting to much bad attention because of all the hax work as you say but all the stuff anonymous does now it is reported as 4chan work so lol life is a riot