for (y = 0; y < 224; y += 4) {
   ADCON = 8;
   s[28+y] = TH0;
   s[29+y] = TL0;
   s[30+y] = sadch >> 6;
   s[31+y] = (sadch << 2) | (sadcon >> 6);
   sadch = ADCH;
   sadcon = ADCON;
}