program = bytes([
    0b10100001,             # PUSH R1
    0b11100000, 0b00001111, # MOV R0, 15
    0b11100001, 0b00000001, # MOV R1, 1
    0b11010001,             # SUB R0, R1
    0b10010000, 0b00000000, # CMP R0, 0
    0b00100000, 0b00001110, # JEQ 14
    0b01000000, 0b00000101, # JMP 5
    0b00000000,             # DB 0
    0b01000011,             # 'C'
    0b01100001,             # POP R1
    0b11100000, 0b01000001, # MOV R0, 'A'
    0b10000000              # RET
])

with open("programme.bin", "wb") as f:
    f.write(program)