pnozz_write_dac(p, DAC_INDX_HI, (offset & 0xff00) >> 8);
unsigned char pnozz_read_dac_ctl_reg(PnozzPtr p, int offset){	pnozz_write_dac(p, DAC_INDX_LO, (offset & 0xff));	pnozz_write_dac(p, DAC_INDX_HI, (offset & 0xff00) >> 8);	return pnozz_read_dac(p, DAC_INDX_DATA);}