VNDMR_REG
dmr = rvin_read(vin, VNDMR_REG) & ~VNDMR_ABIT;
dmr = rvin_read(vin, VNDMR_REG) & ~VNDMR_A8BIT_MASK;
rvin_write(vin, dmr, VNDMR_REG);