#include <hcs12.h>
void MSDelay(unsigned int ms);
void main()
  {
    unsigned char x;
    DDRA=0x7F;		
    DDRB=0xFF;		
    while(1) 
	{
        x = PORTA;
        x = x & 0x80;	
        if(x == 0)
          {
          PORTB = 0x66;
          MSDelay(100);
          PORTB = 0xCC;
          MSDelay(100);
          PORTB = 0x99;
          MSDelay(100);
          PORTB = 0x33;
          MSDelay(100);
          }
        else
          {
          PORTB = 0x66;
          MSDelay(100);
          PORTB = 0x33;
          MSDelay(100);
          PORTB = 0x99;
          MSDelay(100);
          PORTB = 0xCC;
          MSDelay(100);
          }
      }
  }
void MSDelay(unsigned int value)
  {
    unsigned int x, y;
    for(x=0;x<1275;x++)
      for(y=0;y<value;y++);
  }