DAC_RIGHT
*DAC_RIGHT = 128;
*DAC_RIGHT=sval;
*DAC_LEFT=*DAC_RIGHT=127;
*DAC_RIGHT=*q40_pp++;
*DAC_RIGHT=*q40_pp++;
*DAC_LEFT=*DAC_RIGHT=127;
dac = DAC_RIGHT;
if (!(data & (DAC_LEFT | DAC_RIGHT)))