import "uw8.ram" memory(2);
import "uw8.time" global time: i32;

export fn tic() {
  let i = 0;
  loop frame {
    i?64 = (i % 320 + time / 10) ^ (i / 320);
    branch_if (i := i + 1) < 320*256: frame;
  }
}