BGE_SDIMODE_ENABLE
CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE |
CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
bge_stop_block(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);