h6. [[SDIODriver]] h6(. » [[SDIODriver SWI Calls|SWI Calls]] h6((. » SDIO_ControllerFeatures h2. SDIO_ControllerFeatures h5. (SWI &59003) |_<^{width:4em}. Entry | | |/3<^. R0 |<^. Feature number: | |<^. Index meaning | |<^. 0 = log2 of maximum block length supported for data transfers | |/2<^. R1 |<^. Bits 0-7 = slot number | |<^. Bits 8-15 = bus number | |_<^{width:4em}. Exit | | |<^. R2 |<^. Value corresponding to the requested feature | h4. Re-entrancy This SWI is re-entrant. h4. Use This SWI is used to enable the caller to discover features of the SD controller. h4. Notes An error is generated for unknown feature index values. h4. See also * [[SDIO_Control]]