diff --git a/ubb-vga/regs4740.h b/ubb-vga/regs4740.h
index b3c7385..1cbeef4 100644
--- a/ubb-vga/regs4740.h
+++ b/ubb-vga/regs4740.h
@@ -66,8 +66,12 @@
 #define	MSC_RESTO	_MSC(0x10)	/* MMC/SD response time out */
 #define	MSC_BLKLEN	_MSC(0x18)	/* MMC/SD block length */
 #define	MSC_NOB		_MSC(0x1c)	/* MMC/SD number of blocks */
+#define	MSC_SNOB	_MSC(0x20)	/* MMC/SD successful blocks */
+#define	MSC_IMASK	_MSC(0x24)	/* MMC/SD interrupt mask */
+#define	MSC_IREG	_MSC(0x28)	/* MMC/SD interrupt */
 #define	MSC_CMD		_MSC(0x2c)	/* MMC/SD command index */
 #define	MSC_ARG		_MSC(0x30)	/* MMC/SD command argument */
+#define	MSC_RXFIFO	_MSC(0x38)	/* MMC/SD receive data FIFO */
 #define	MSC_TXFIFO	_MSC(0x3c)	/* MMC/SD transmit data FIFO */
 
 #define	_DMAn(n, r)	_DMAC(0x20*(n)+(r))