--- /dev/null
+#if !defined(__MSP430_HEADERS_REF_H__)
+#define __MSP430_HEADERS_REF_H__
+
+/* ref.h
+ *
+ * mspgcc project: MSP430 device headers
+ * REF (voltage reference) module
+ *
+ * Based on cc430x613x.h version 1.5 by Texas Instruments
+ *
+ * Peter A. Bigot <pab@peoplepowerco.com>
+ *
+ */
+
+/* Switches:
+__MSP430_HAS_REF__ - definition to show module available
+__MSP430_REF_BASE__ - base address of REF module
+*/
+
+#if defined(__MSP430_REF_BASE__)
+
+#define REFCTL0_ __MSP430_REF_BASE__ + 0x00 /* REF Shared Reference control register 0 */
+sfrw(REFCTL0, REFCTL0_);
+#define REFCTL0_L_ __MSP430_REF_BASE__ + 0x00
+sfrb(REFCTL0_L, REFCTL0_L_);
+#define REFCTL0_H_ __MSP430_REF_BASE__ + 0x01
+sfrb(REFCTL0_H, REFCTL0_H_);
+
+/* REFCTL0 Control Bits */
+#define REFON (0x0001) /* REF Reference On */
+#define REFOUT (0x0002) /* REF Reference output Buffer On */
+//#define RESERVED (0x0004) /* Reserved */
+#define REFTCOFF (0x0008) /* REF Temp.Sensor off */
+#define REFVSEL0 (0x0010) /* REF Reference Voltage Level Select Bit:0 */
+#define REFVSEL1 (0x0020) /* REF Reference Voltage Level Select Bit:1 */
+//#define RESERVED (0x0040) /* Reserved */
+#define REFMSTR (0x0080) /* REF Master Control */
+#define REFGENACT (0x0100) /* REF Reference generator active */
+#define REFBGACT (0x0200) /* REF Reference bandgap active */
+#define REFGENBUSY (0x0400) /* REF Reference generator busy */
+#define BGMODE (0x0800) /* REF Bandgap mode */
+//#define RESERVED (0x1000) /* Reserved */
+//#define RESERVED (0x2000) /* Reserved */
+//#define RESERVED (0x4000) /* Reserved */
+//#define RESERVED (0x8000) /* Reserved */
+
+/* REFCTL0 Control Bits */
+#define REFON_L (0x0001) /* REF Reference On */
+#define REFOUT_L (0x0002) /* REF Reference output Buffer On */
+//#define RESERVED (0x0004) /* Reserved */
+#define REFTCOFF_L (0x0008) /* REF Temp.Sensor off */
+#define REFVSEL0_L (0x0010) /* REF Reference Voltage Level Select Bit:0 */
+#define REFVSEL1_L (0x0020) /* REF Reference Voltage Level Select Bit:1 */
+//#define RESERVED (0x0040) /* Reserved */
+#define REFMSTR_L (0x0080) /* REF Master Control */
+//#define RESERVED (0x1000) /* Reserved */
+//#define RESERVED (0x2000) /* Reserved */
+//#define RESERVED (0x4000) /* Reserved */
+//#define RESERVED (0x8000) /* Reserved */
+
+/* REFCTL0 Control Bits */
+//#define RESERVED (0x0004) /* Reserved */
+//#define RESERVED (0x0040) /* Reserved */
+#define REFGENACT_H (0x0001) /* REF Reference generator active */
+#define REFBGACT_H (0x0002) /* REF Reference bandgap active */
+#define REFGENBUSY_H (0x0004) /* REF Reference generator busy */
+#define BGMODE_H (0x0008) /* REF Bandgap mode */
+//#define RESERVED (0x1000) /* Reserved */
+//#define RESERVED (0x2000) /* Reserved */
+//#define RESERVED (0x4000) /* Reserved */
+//#define RESERVED (0x8000) /* Reserved */
+
+#define REFVSEL_0 (0x0000) /* REF Reference Voltage Level Select 1.5V */
+#define REFVSEL_1 (0x0010) /* REF Reference Voltage Level Select 2.0V */
+#define REFVSEL_2 (0x0020) /* REF Reference Voltage Level Select 2.5V */
+#define REFVSEL_3 (0x0030) /* REF Reference Voltage Level Select 2.5V */
+
+
+#endif /* __MSP430_REF_BASE__ */
+
+#endif /* __MSP430_HEADERS_REF<_H__ */
+