RXRSRC_WCHI
SWO(bitmode, sc->p_rra[i], RXRSRC_WCHI, UPPER(PAGE_SIZE/2));
SWO(bitmode, tmp1, RXRSRC_WCHI,
SRO(bitmode, tmp2, RXRSRC_WCHI));
SWO(bitmode, tmp2, RXRSRC_WCHI, 0);