Hello ..


i written this code



and try to compile it (using command line) it's show this massege for me : `10` is not recognized as an internal or external command , operable program or batch file.

why ?

That sounds like a DOS error.. you sure your doing "fasm file.asm"?.. sounds like your trying to run the source file if anything

yup,
1. add "org 100h" and the beginning and "int 20h" at the end
2. in command line write "fasm file.asm file.com'
3. run "file.com"

Great it's work now

but i have question , i know 20h is DOS int , but when i want write my own OS , should i use 20h ?

MaaSTaaR,
if you write os what exactly dos interrupt should do in your os?

i whould think you are making an os for dos...

i quess it's not time for you to write OS yet. but of course, you can't use int 20h outside DOS. But your problem is problem of logic - what should int 20h do in your OS. int 20h is exit to parent program, so it has no meaning in OS.