// ---  COUNT.C -------------------

// Global Variables

// Subroutine Declarations
#include <pic18.h>

void Wait(unsigned int DATA)
{
   unsigned int i, j;
   for (i=0; i<DATA; i++) {
      for (j=0; j<1000; j++);
   }
}
   
// Main Routine



void main(void)
{
   unsigned long int X;
   unsigned char i;

   TRISA = 0;
   TRISB = 0;
   TRISC = 0;
   TRISD = 0;
   TRISE = 0;
   ADCON1 = 0x0F;
   X = 1;
   
   while(1) {
      for(i=0; i<31; i++) {
         X = X << 1;
         PORTD = X;
         PORTC = X >> 8;
         PORTB = X >> 16;
         PORTA = X >> 24;
         PORTE = X >> 30;
         Wait(10);
         } 
      for(i=0; i<31; i++) {
         X = X >> 1;
         PORTD = X;
         PORTC = X >> 8;
         PORTB = X >> 16;
         PORTA = X >> 24;
         PORTE = X >> 30;
         Wait(10);
         }   
  
      }
   }