diff --git a/motorApp/MotorSrc/motor.h b/motorApp/MotorSrc/motor.h
index 69bd3c2d..8f5b135f 100644
--- a/motorApp/MotorSrc/motor.h
+++ b/motorApp/MotorSrc/motor.h
@@ -49,6 +49,8 @@ Last Modified:	$Date: 2009-04-27 14:28:42 $
  *                    6.x.  Added test for CPU macros.
  * .09 04-07-11 kmp - Added __APPLE__ to define bit order
  *                    tested by jph with simMotorDriver.
+ * .10 08-25-11 rls - Replaced deprecated #cpu preprocessor assertions with
+ *                    the defined() operator.
  */
 
 #ifndef	INCmotorh
@@ -127,13 +129,13 @@ typedef enum  {
 
 /* Define, from top to bottom, how bit fields are packed. */
 /* This works for gnu, SunPro, MS Visual C. */
-#if defined(_WIN32) || defined (_M_IX86) || defined (_X86_)
+#if defined(_WIN32) || defined(_M_IX86) || defined(_X86_)
     #define LSB_First (TRUE)  /* LSB is packed first. */
-#elif defined (__i386__) || defined(_armv4l_) || defined (_X86_64_)  || defined(__APPLE__)
+#elif defined(__i386__) || defined(_armv4l_) || defined(_X86_64_) || defined(__APPLE__)
     #define LSB_First (TRUE)  /* LSB is packed first. */
-#elif #cpu(i386)
+#elif defined(i386)
     #define LSB_First (TRUE)  /* LSB is packed first. */    
-#elif #cpu(sparc) || #cpu(m68k) || #cpu(powerpc)
+#elif defined(sparc) || defined(m68k) || defined(powerpc)
     #define MSB_First (TRUE)  /* MSB is packed first. */
 #elif (CPU == PPC604) || (CPU == PPC603) || (CPU==PPC85XX)
     #define MSB_First (TRUE)  /* MSB is packed first. */