Pascal - Basic operting system

Question

Want to create a basic operating system in pascal, what should the main script for the body include?

Answer 1

You need to give us more information. Is it going to run on an operating system pretending to be (behaving like) an operating, or are we talking about a real operating system?

Answer 2

it can run like a real operating system but can not be like real one

Answer 3

And what should this operating system do? What's the scope.