MVXPE_PMACC0
reg = MVXPE_READ(sc, MVXPE_PMACC0);
MVXPE_WRITE(sc, MVXPE_PMACC0, reg);
reg = MVXPE_READ(sc, MVXPE_PMACC0);
MVXPE_WRITE(sc, MVXPE_PMACC0, reg);
reg = MVXPE_READ(sc, MVXPE_PMACC0);
MVXPE_WRITE(sc, MVXPE_PMACC0, reg);