Chapter 6, Problem 6.41HW

You are writing a new 3D game that you hope will earn you fame and fortune. You are currently working on a function to blank the screen buffer before drawing the next frame. The screen you are working with is a 640 x 480 array of pixels. The machine you are working on has a 64 KB direct-mapped cache with 4-byte lines The C structures you are using are as follows:

Assume the following:

- size of(char) = 1 and size of(int) = 4.

Homework Problem

- buffer begins at memory address 0.

- The cache is initially empty.

- The only memory accesses are to the entries of the array buffer. Variables l, j, cptr, and iptr are stored in registers.

What percentage of writes in the following code will miss in the cache?