ivch_read
if (!ivch_read(dvo, VR00, &temp))
ivch_read(dvo, VR20, &priv->width);
ivch_read(dvo, VR21, &priv->height);
ivch_read(dvo, backup_addresses[i], priv->reg_backup + i);
if (!ivch_read(dvo, VR01, &vr01))
if (!ivch_read(dvo, VR30, &vr30))
if (!ivch_read(dvo, VR01, &vr01))
ivch_read(dvo, VR00, &val);
ivch_read(dvo, VR01, &val);
ivch_read(dvo, VR10, &val);
ivch_read(dvo, VR30, &val);
ivch_read(dvo, VR40, &val);
ivch_read(dvo, VR80, &val);
ivch_read(dvo, VR81, &val);
ivch_read(dvo, VR82, &val);
ivch_read(dvo, VR83, &val);
ivch_read(dvo, VR84, &val);
ivch_read(dvo, VR85, &val);
ivch_read(dvo, VR86, &val);
ivch_read(dvo, VR87, &val);
ivch_read(dvo, VR88, &val);
ivch_read(dvo, VR8E, &val);
ivch_read(dvo, VR8F, &val);