.text start: mov r1, #0x50000000 orr r1, r1, #0x00020000 mov r2, #0x20 orr r2, r2, #0x2000 strh r2, [r1] mov r2, #0xd0 orr r2, r2, #0xd000 strh r2, [r1] mov r2, #0xff orr r2, r2, #0xff00 strh r2, [r1]