ldi r0, 0x04;
ldi r1, 0x1122;
ldih r1, 0x8899;
mov r2, r1;
mov r3, r1;
mov r4, r1;
ldb r1, 0(r0);
ldb r2, 1(r0);
ldb r3, 2(r0);
ldb r4, 3(r0);