ED_P0_BNRY
NIC_PUT(ED_P0_BNRY, boundary);
NIC_PUT(ED_P0_BNRY, rec_page_start);
NIC_PUT(regt, regh, ED_P0_BNRY, sc->rec_page_start);
NIC_PUT(regt, regh, ED_P0_BNRY, boundary);