Changed multi-line C comments into another style.

The left side doesn't look unbalanced.

src/sim65/6502.c

@@ -85,8 +85,8 @@ static unsigned HaveIRQRequest;
 #define GET_SF()        ((Regs.SR & SF) != 0)
 
 /* Set the flags. The parameter is a boolean flag that says if the flag should be
- * set or reset.
- */
+** set or reset.
+*/
 #define SET_CF(f)       do { if (f) { Regs.SR |= CF; } else { Regs.SR &= ~CF; } } while (0)
 #define SET_ZF(f)       do { if (f) { Regs.SR |= ZF; } else { Regs.SR &= ~ZF; } } while (0)
 #define SET_IF(f)       do { if (f) { Regs.SR |= IF; } else { Regs.SR &= ~IF; } } while (0)
@@ -96,8 +96,8 @@ static unsigned HaveIRQRequest;
 #define SET_SF(f)       do { if (f) { Regs.SR |= SF; } else { Regs.SR &= ~SF; } } while (0)
 
 /* Special test and set macros. The meaning of the parameter depends on the
- * actual flag that should be set or reset.
- */
+** actual flag that should be set or reset.
+*/
 #define TEST_ZF(v)      SET_ZF (((v) & 0xFF) == 0)
 #define TEST_SF(v)      SET_SF (((v) & 0x80) != 0)
 #define TEST_CF(v)      SET_CF (((v) & 0xFF00) != 0)

src/sim65/6502.h

@@ -93,8 +93,8 @@ void NMIRequest (void);
 
 unsigned ExecuteInsn (void);
 /* Execute one CPU instruction. Return the number of clock cycles for the
- * executed instruction.
- */
+** executed instruction.
+*/
 
 unsigned long GetCycles (void);
 /* Return the total number of clock cycles executed */

src/sim65/memory.c

@@ -83,9 +83,9 @@ unsigned MemReadWord (unsigned Addr)
 
 unsigned MemReadZPWord (unsigned char Addr)
 /* Read a word from the zero page. This function differs from ReadMemW in that
- * the read will always be in the zero page, even in case of an address
- * overflow.
- */
+** the read will always be in the zero page, even in case of an address
+** overflow.
+*/
 {
     unsigned W = MemReadByte (Addr++);
     return (W | (MemReadByte (Addr) << 8));

src/sim65/memory.h

@@ -55,9 +55,9 @@ unsigned MemReadWord (unsigned Addr);
 
 unsigned MemReadZPWord (unsigned char Addr);
 /* Read a word from the zero page. This function differs from ReadMemW in that
- * the read will always be in the zero page, even in case of an address
- * overflow.
- */
+** the read will always be in the zero page, even in case of an address
+** overflow.
+*/
 
 void MemInit (void);
 /* Initialize the memory subsystem */