Yep 3->5 is a typo. r4 could be zeroed, but I was lazy and assumed that as long as it's greater than zero it doesn't matter (since it's always compared to zero

Yep 3->5 is a typo. r4 could be zeroed, but I was lazy and assumed that as long as it's greater than zero it doesn't matter (since it's always compared to zero). Instruction 4 should be cmp(3,4) to force a jump to 9. EDIT: Although thinking about it, it doesn't make much difference. It has the same effect as doing cmp(0,4) since you know r4 > 0 and r0 == 0. Thanks!