MVPXA_WRITE
MVPXA_WRITE(sc, MVPXA_CTRL(i), 0);
MVPXA_WRITE(sc, MVPXA_BASE(i), 0);
MVPXA_WRITE(sc, MVPXA_CTRL(i),
MVPXA_WRITE(sc, MVPXA_BASE(i), win->base);