WB_BANKSEL
(*lmsc->lm_writereg)(lmsc, WB_BANKSEL, bank);
banksel = (*sc->lm_readreg)(sc, WB_BANKSEL);
banksel = (*sc->lm_readreg)(sc, WB_BANKSEL);
banksel = (*sc->lm_readreg)(sc, WB_BANKSEL);
banksel = (*sc->lm_readreg)(sc, WB_BANKSEL);
banksel = bank = sc->lm_readreg(sc, WB_BANKSEL);