Richard Ellingworth
Version of Robotron arcade game using LPC1768, a Gameduino shield, a serial EEPROM (for high scores), two microswitch joysticks and two buttons plus a box to put it in. 20 levels of mayhem.
Dependencies: 25LCxxx_SPI CommonTypes Gameduino mbed
Diff: BCDNumber.h
- Revision:
- 4:673eb9735d44
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/BCDNumber.h Sat Jun 08 11:24:05 2013 +0000
@@ -0,0 +1,39 @@
+/*
+ * SOURCE FILE : BCDNumber.h
+ *
+ * A 4 byte unsigned BCD integer.
+ *
+ */
+
+#ifndef BCDNumberIncluded
+
+ #define BCDNumberIncluded
+
+ #include "Types.h"
+
+ class BCDNumber {
+
+ public :
+
+ enum {
+ ByteCount = 4, // Number of bytes used to store number.
+ };
+
+ /***********************/
+ /* ADD TWO BCD NUMBERS */
+ /***********************/
+ // Pass first number in A.
+ // Pass second number in B.
+ // Pass pointer to result in result.
+ // Pass carry flag in carry.
+ // Remember numbers are BCD coded so 0x99999999 means 9 million,
+ // 9 hundred and 99 thousand, 9 hundred and 99.
+ // Returns carry flag. If this is set then overflow occurred.
+ static bool Add( UInt32 numA, UInt32 numB, UInt32 *result, bool carry = false );
+
+ };
+
+#endif
+
+/* END of BCDNumber.h */
+