Keyboard input

SET A, 0x8000 ; Set the register A to 0x8000
SET B, [0x9000] ; Set B to 0x9000, beginning of the cycle
IFE B, 0x0000 ; If B is equal to the value of 0x0000, aka check the input. If there's no input go to the next operation and go back to the beginning of the cycle
SET PC, 0x0002 ; Set the PC register to 0x0002
BOR B, 0x7000 ; Bitwise OR operation
SET [A], B ; Set [A] as B.
SET [0x9000], 0x0000 ; Set the val of 0x0000 to [0x9000]
ADD A, 0x0001 ; Add A + 0x0001
SET PC, 0x0002 ; End and go back to the beginning of the cycle