NV_SELECT
WRT_REG_WORD(®->nvram, (NV_SELECT | NV_CLOCK));
WRT_REG_WORD(®->nvram, NV_SELECT);
WRT_REG_WORD(®->nvram, data | NV_SELECT);
WRT_REG_WORD(®->nvram, data | NV_SELECT | NV_CLOCK);
WRT_REG_WORD(®->nvram, data | NV_SELECT);