Tidy up and comment.

Source/portable/IAR/V850ES_Fx3/port.c

@@ -54,8 +54,11 @@
 #include "FreeRTOS.h"
 #include "task.h"
 
+/* Critical nesting should be initialised to a non zero value so interrupts don't
+accidentally get enabled before the scheduler is started. */
 #define portINITIAL_CRITICAL_NESTING  (( portSTACK_TYPE ) 10)
 
+/* The PSW value assigned to tasks when they start to run for the first time. */
 #define portPSW		  (( portSTACK_TYPE ) 0x00000000)
 
 /* We require the address of the pxCurrentTCB variable, but don't want to know
@@ -63,11 +66,14 @@ any details of its type. */
 typedef void tskTCB;
 extern volatile tskTCB * volatile pxCurrentTCB;
 
+/* Keeps track of the nesting level of critical sections. */
 volatile portSTACK_TYPE usCriticalNesting = portINITIAL_CRITICAL_NESTING;
 /*-----------------------------------------------------------*/
 
+/* Sets up the timer to generate the tick interrupt. */
 static void prvSetupTimerInterrupt( void );
 
+/*-----------------------------------------------------------*/
 portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
 {
 	*pxTopOfStack = ( portSTACK_TYPE ) pxCode;          /* Task function start address */

Source/portable/IAR/V850ES_Fx3/portmacro.h

@@ -127,7 +127,6 @@ extern void vPortYield( void );
 extern void vPortStart( void );
 extern void portSAVE_CONTEXT( void );
 extern void portRESTORE_CONTEXT( void );
-//#define portYIELD()	vPortYield()
 #define portYIELD()	__asm ( "trap 0" )
 #define portNOP()	__asm ( "NOP" )
 extern void vTaskSwitchContext( void );
@@ -146,9 +145,6 @@ extern void vTaskSwitchContext( void );
 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
 
 
-static __interrupt void MD_INTP0(void);
-
-
 #ifdef __cplusplus
 }
 #endif