some cleanup

blinker02/README

@@ -13,3 +13,8 @@ appears that the timer is runing at about a megahertz, 1 million ticks
 per second.  I am guessing it is divided down from the 700MHz somewhere,
 will dig deeper.
 
+Hmm, there are comments in the manual about the system clock coming up
+at 250MHz.  I wonder if this system timer is 250MHz/256 = 0.976MHz.
+
+
+

blinker02/blinker02.c

@@ -11,6 +11,10 @@ extern void dummy ( unsigned int );
 #define GPSET0  0x2020001C
 #define GPCLR0  0x20200028
 
+//0x01000000 17 seconds
+//0x00400000 4 seconds
+#define TIMER_BIT 0x00400000
+
 //-------------------------------------------------------------------------
 int notmain ( void )
 {
@@ -27,17 +31,13 @@ int notmain ( void )
         while(1)
         {
             ra=GET32(SYSTIMERCLO);
-            //0x01000000 17 seconds
-            if((ra&=0x01000000)==0x01000000) break;
-            //0x00400000 4 seconds
-            if((ra&=0x00400000)==0x01000000) break;
+            if((ra&=TIMER_BIT)==TIMER_BIT) break;
         }
         PUT32(GPCLR0,1<<16);
         while(1)
         {
             ra=GET32(SYSTIMERCLO);
-            //if((ra&=0x01000000)==0x00000000) break;
-            if((ra&=0x00400000)==0x00000000) break;
+            if((ra&=TIMER_BIT)==0) break;
         }
     }
     return(0);