#include <16F84A.h>

#FUSES NOWDT                    //No Watch Dog Timer

#use delay(crystal=4MHz)

#define boolean short int 

#define LED1 PIN_B1
#define LED2 PIN_B2
#define LED3 PIN_B4
#define LED4 PIN_B6
#define LED5 PIN_B5
#define LED6 PIN_B7

#define DELAY 1000

void test_led(){
        output_high(LED1);
        output_high(LED2);
        output_high(LED3);
        output_high(LED4);
        output_high(LED5);
        output_high(LED6);
        delay_ms(900);
        output_low(LED1);
        output_low(LED2);
        output_low(LED3);
        output_low(LED4);
        output_low(LED5);
        output_low(LED6);        
}

void clear_led(){
        output_low(LED1);
        output_low(LED2);
        output_low(LED3);
        output_low(LED4);
        output_low(LED5);
        output_low(LED6);        
}

void gate_pin_state(unsigned int Pin, boolean s){
        if (s == 1) output_high(Pin);
        if (s == 0) output_low(Pin);
}

////bramki
short int and_gate(short int a, short int b){
        gate_pin_state(LED1, a);
        gate_pin_state(LED2, b);
        short int c = 0;
        if (a == 1 && b == 1) c = 1;
        gate_pin_state(LED4,c);
        return c;
}

short int not_gate(short int a){
        gate_pin_state(LED3, a);
        short int c = 0;
        if (a == 1) c = 0;
        if (a == 0) c = 1;
        gate_pin_state(LED5,c);
        return c;
}

short int or_gate(short int a, short int b){
        //gate_pin_state(LED4, a);
        //gate_pin_state(LED5, b);
        short int c = 0;
        if (a == 1) c = 1;
        if (b == 1) c = 1;
        gate_pin_state(LED6,c);
        return c;
}


void main()
{
   delay_ms(900);
   test_led();
   delay_ms(900);

   short int a[] = {1,0,1,0,1,0,1,0};
   short int b[] = {1,1,0,0,1,1,0,0};
   short int c[] = {1,1,1,1,0,0,0,0};

   while(true)
   {
      int x;
      for(x=0;x<8;x++){
              delay_ms(DELAY);
              clear_led();
              short int an = and_gate(a[x],b[x]);
              short int no = not_gate(c[x]);
              or_gate(an,no);
              delay_ms(DELAY);
      }
   }

}