(author here) interesting guess, but wrong, as others explained. for maximum purity you can try to NOT call any dos functions or interrupts. i gave that a try i

(author here) interesting guess, but wrong, as others explained. for maximum purity you can try to NOT call any dos functions or interrupts. i gave that a try in the production "noint10h" ;) https://www.pouet.net/prod.php?which=80769 https://www.pouet.net/prod.php?which=80769