Other programs, such as some DOS programs, may not even run on faster computers.

On the 80286, the DOS program had to run in realmode.

This is useful for old DOS programs which only use conventional memory.

Feature two: old DOS programs assumed they had the run of the chip.

As a result some DOS programs would no longer work.

However, not all DOS programs could execute in this environment.

DOS programs wrote to the screen by specifying a row, column, color, and character.

It can be accessed during the main menu and runs much like a DOS program.

If a DOS program is running, the status line is not shown.

DOS programs cannot be run in the background.