diff --git a/SD_CARD/BaS_gcc/include/sd_card.h b/SD_CARD/BaS_gcc/include/sd_card.h
index c43e7c6..cd40ad4 100644
--- a/SD_CARD/BaS_gcc/include/sd_card.h
+++ b/SD_CARD/BaS_gcc/include/sd_card.h
@@ -39,4 +39,11 @@ extern uint8_t sd_card_get_status(void);
 extern uint8_t spi_send_byte(uint8_t byte);
 extern uint16_t spi_send_word(uint16_t word);
 
+/* MMC card type flags (MMC_GET_TYPE) */
+#define CT_MMC		0x01		/* MMC ver 3 */
+#define CT_SD1		0x02		/* SD ver 1 */
+#define CT_SD2		0x04		/* SD ver 2 */
+#define CT_SDC		(CT_SD1|CT_SD2)	/* SD */
+#define CT_BLOCK	0x08		/* Block addressing */
+
 #endif /* _SD_CARD_H_ */
diff --git a/SD_CARD/BaS_gcc/sources/mmcbb.c b/SD_CARD/BaS_gcc/sources/mmcbb.c
index e00688a..41b317c 100644
--- a/SD_CARD/BaS_gcc/sources/mmcbb.c
+++ b/SD_CARD/BaS_gcc/sources/mmcbb.c
@@ -158,7 +158,7 @@ static void xmit_spi_multi(const BYTE *buff, UINT btx)
 #endif
 
 
-static bool card_ready(void)
+static int card_ready(void)
 {
 	uint8_t d;
 
@@ -400,7 +400,7 @@ DSTATUS disk_initialize(BYTE drv)
 	deselect();
 
 	if (ty) {			/* OK */
-		FCLK_FAST();			/* Set fast clock */
+		// FCLK_FAST();			/* Set fast clock */
 		Stat &= ~STA_NOINIT;	/* Clear STA_NOINIT flag */
 	} else {			/* Failed */
 		power_off();