qv_reg_wr
qv_reg_wr(sc, QV_CRTC_AR, addr);
qv_reg_wr(sc, QV_CRTC_DR, data);
qv_reg_wr(sc, QV_CSR, qv_reg_rd(sc, QV_CSR) | (1 << 2) | (1 << 3));
qv_reg_wr(sc, QV_CSR,
qv_reg_wr(sc, QV_CSR,
qv_reg_wr(sc, QV_CUR_X, sc->sc_curx);