How to compile ms dos source code?

Question

DOS

There is a source code for ms dos. I want to create my own distribution, but I don't know what assembler microsoft used. Help with a choice of the compiler or articles of those who did it.

Answer 1

Try with. MASM version 2.0
How do you build MS-DOS?
But as far as I understand - there are broken code fragments - you will have to edit the handles to successfully compile.