AG71XX_REG_RX_STATUS
ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
status = ag71xx_rr(ag, AG71XX_REG_RX_STATUS);
ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_OF);
ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_BE);
ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_BE | RX_STATUS_OF);
val = ag71xx_rr(ag, AG71XX_REG_RX_STATUS);