Evilspeak

Evilspeak is a 1981 American horror film directed by Eric Weston and co-written by Weston and Joseph Garofalo. The film stars Clint Howard as an outcast cadet named Stanley Coopersmith, who frequently gets tormented by his mates and advisers at a military academy. Upon finding a book of black mass that belonged to the evil medieval Father Esteban, he taps through a computer to conjure Satan and summons spells and demons to get revenge upon his harassers.