How to get address of point (x, y) in a grid sized (w, h)

Answer 1

From your description, it looks like you are doing column first addressing. In this case, you can find x by calculating (address%w). Once you have x, you can get y by calculating (address-x)/w.

Answer 2

x = address mod w<br>
y = address div w

Answer 3

x=Address MOD w
y=Address INT_DIV w