instructions n1 n2 -> n1-n2 SUB -> Pushes n1 - n2(byte) to the stack SUBw -> Pushes n1 - n2 (word) to the stack SUBx -> Pushes n1 - x (byte) to the stack SUBxw -> Pushes n1 - xw (word) to the stack SUBy -> Pushes n1 - y (byte) to the stack SUByw -> Pushes n1 - yw (word) to the stack SUBxy -> Pushes x - y (byte) to the stack SUBxyw -> Pushes xw - yw (word) to the stack