#include 

//Quickly Turn VSYNC On/Off
//Or You Can Change The VSYNC Pin..
#define VSYNC_LOW    PORTD &= ~_BV(6)
#define VSYNC_HIGH   PORTD |= _BV(6)

//Quickly Turn HSYNC On/Off
//Or You Can Change The HSYNC Pin..
#define HSYNC_LOW    PORTD &= ~_BV(7)
#define HSYNC_HIGH   PORTD |= _BV(7)

//RED
#define RED_ON       PORTB |= _BV(4)
#define RED_OFF      PORTB &= ~_BV(4)

//Green
#define GREEN_ON     PORTB |= _BV(3)
#define GREEN_OFF    PORTB &= ~_BV(3)

//BLUE
#define BLUE_ON      PORTB |= _BV(2)
#define BLUE_OFF     PORTB &= ~_BV(2)

void setup() {
}

void loop() {
//Initializations
int i = 0;
cli();
DDRB = 0xFF;
DDRD = 0xFF;
  
//Loop Over-And-Over Again
  while(1){
        //Clear The i counter
      i=0;
        //VSYNC Low
      VSYNC_LOW;
        //200 Lines Of Red
      while(i < 200){
            //Red Color High
          RED_ON;
          
            //2.2uS Back Porch
          delayMicroseconds(2);  
          __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
          
            //20uS Color Data
          delayMicroseconds(20); // 1uS        
          
            //Red Color Low
          RED_OFF;  //Low
          
            //1uS Front Porch
          delayMicroseconds(1); // 1uS 
          i++;
          
            //3.2uS Horizontal Sync
          HSYNC_HIGH;  //HSYNC High
          delayMicroseconds(3);
          __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
          HSYNC_LOW;  //HSYNC Low
          
          //26.4uS Total
      }
         //Clear The i counter
      i=0;
        //VSYNC Low 
      VSYNC_LOW;
        //200 Lines Of Green
      while(i < 200){
            //Green Color High
          GREEN_ON;      
            
            //2.2uS Back Porch
          delayMicroseconds(2);
          __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
          
            //20uS Color Data
          delayMicroseconds(20); // 1uS        
          
            //Green Color Low
          GREEN_OFF;  //Low
          
            //1uS Front Porch
          delayMicroseconds(1); // 1uS 
          i++;
          
            //3.2uS Horizontal Sync
          HSYNC_HIGH;  //HSYNC High
          delayMicroseconds(3);
          __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
          HSYNC_LOW;  //HSYNC Low
          
            //26.4uS Total
      }    
  
        //Clear The i counter
      i=0;
        //VSYNC Low 
      VSYNC_LOW;  //Low
        //200 Lines Of Blue
      while(i<200){
            //Blue Color High
          BLUE_ON;  //Low      
          //2.2uS Back Porch
          delayMicroseconds(2);
          __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
          
            //20uS Color Data
          delayMicroseconds(20); // 1uS        
          
            //Blue Color Low
          BLUE_OFF;  //Low
          
            //1uS Front Porch
          delayMicroseconds(1); // 1uS 
          i++;
          
            //3.2uS Horizontal Sync
          HSYNC_HIGH;  //HSYNC High
          delayMicroseconds(3);
          __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
          HSYNC_LOW;  //HSYNC Low
          
            //26.4uS Total
      }    
        //Clear The i counter
      i=0;
        //VSYNC High
      VSYNC_HIGH;
        //4 Lines Of VSYNC   
      while(i<4){         
            //2.2uS Back Porch    
          delayMicroseconds(2);
          __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
          
            //20 uS Of Color Data
          delayMicroseconds(20);// 20uS
          
            //1uS Front Porch
          delayMicroseconds(1); // 1uS
          i++;
          
            //HSYNC for 3.2uS
          HSYNC_HIGH;  //High
          delayMicroseconds(3);
          __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
          HSYNC_LOW;  //Low  
          
            //26.4uS Total
      }
      
        //Clear The i counter
      i=0;
        //VSYNC Low
      VSYNC_LOW;
        //23 Lines Of Vertical Back Porch + 1 Line Of Front Porch
        //This is very, very flexible...Setting it to 22 Lines
      while(i < 22){
            //2.2uS Back Porch
          delayMicroseconds(2);
          __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
    
            //20uS Color Data
          delayMicroseconds(20);// 20uS
            
            //1uS Front Porch
          delayMicroseconds(1); // 1uS
          i++;
          
            //HSYNC for 3.2uS
          HSYNC_HIGH;  //High
          delayMicroseconds(3);
          __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
          HSYNC_LOW;  //Low  
          
            //26.4uS Total
      }    
  }
}