+#define ATA_CMD_READ_12 0xA8 ///< defined in ATAPI Removable Rewritable Media Devcies\r
+#define ATA_CMD_WRITE_12 0xAA ///< defined in ATAPI Removable Rewritable Media Devcies\r
+#define ATA_CMD_START_STOP_UNIT 0x1B ///< defined in ATAPI Removable Rewritable Media Devcies\r
+///\r
+/// Start/Stop and Eject Operations\r
+///\r
+///@{\r
+#define ATA_CMD_SUBOP_STOP_DISC 0x00 ///< Stop the Disc\r
+#define ATA_CMD_SUBOP_START_DISC 0x01 ///< Start the Disc and acquire the format type\r
+#define ATA_CMD_SUBOP_EJECT_DISC 0x02 ///< Eject the Disc if possible\r
+#define ATA_CMD_SUBOP_CLOSE_TRAY 0x03 ///< Load the Disc (Close Tray)\r
+///@}\r