BGE_MODECTL_STACKUP
mode_ctl |= BGE_MODECTL_STACKUP;
BGE_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
BGE_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);