Thread: [Tutorial] HackMew's Knowledge
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Old April 10th, 2012 (10:39 PM).
NintendoBoyDX NintendoBoyDX is offline
Join Date: Jul 2010
Gender: Male
Posts: 94
Originally Posted by YouListeningROMs View Post
With ASM, how would you do modulo?
There are a couple of ways in fr. There is software interrupt 0x6, which is a bios function call that does division and modulo. There is routine 081E4018 developed by gamefreak, that does division and modulo as well.

R0 = dividend
R1 = divisor

R0 = quotient
R1 = modulo answer

081E4684 is another routine made by gamefreak that does modulo only.

A few other math routines:
081E460C: another division routine
081E3B9C: square root, calls swi 0x8

I've stumbled across a few others that I dont remember..
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