Hi eine frage an die PAl oder fbas experten und die bissel c kennen
ich habe

Code:
//Arduino Tv framebuffer
//Alastair Parker
//2007

// Video out voltage levels
#define _SYNC 0x00
#define _BLACK 0x01
#define _GRAY 0x02
#define _WHITE 0x03

// dimensions of the screen
#define WIDTH 38
#define HEIGHT 14

//number of lines to display
#define DISPLAY_LINES 240

// update speed for the main loop of the game
#define UPDATE_INTERVAL 1

// positions of the player paddles
#define PLAYER_RIGHT_X 35
#define PLAYER_LEFT_X 2

// maximum velocity of the ball
#define MAX_VEL 10


//video pins
#define DATA_PIN 9
#define SYNC_PIN 8

// the video frameBuffer
byte frameBuffer[WIDTH][HEIGHT];

// loop indices
byte index, index2;

// pal video line loop
byte line;
// current drawing line in framebuffer
byte newLine;


// if the left player should be updated or the right

// if we should be waiting for something to happen
boolean waiting=true;
// if displaying the title
boolean showingTitle = true;

// value of the counter controlling the freq of updates
byte updateCounter=0;


// draw a pixel to the buffer
void setPixel(byte x,byte y)
{
frameBuffer[x][y]= _WHITE;
}

void grayPixel(byte x, byte y)
{
frameBuffer[x][y]= _GRAY;
}

// draw a black pixel to the buffer
void clearPixel(byte x,byte y)
{
frameBuffer[x][y]= _BLACK;
}

// draw a paddle
void drawPaddle(byte x,byte y,byte col)
{
frameBuffer[x][y]= col;
frameBuffer[x][y+1]= col;
}


//draw the title message
void drawArduinoPong()
{
//arduino
setPixel(7,3);
setPixel(8,3);
setPixel(15,3);
setPixel(21,3);
setPixel(6,4);
setPixel(8,4);
setPixel(14,4);
setPixel(15,4);
setPixel(28,4);
setPixel(6,5);
setPixel(7,5);
setPixel(8,5);
setPixel(10,5);
setPixel(11,5);
setPixel(13,5);
setPixel(15,5);
setPixel(17,5);
setPixel(19,5);
setPixel(21,5);
setPixel(23,5);
setPixel(24,5);
setPixel(27,5);
setPixel(29,5);
setPixel(6,6);
setPixel(8,6);
setPixel(10,6);
setPixel(14,6);
setPixel(15,6);
setPixel(18,6);
setPixel(19,6);
setPixel(21,6);
setPixel(23,6);
setPixel(25,6);
setPixel(28,6);

//pong
setPixel(10,8);
setPixel(11,8);
setPixel(15,8);
setPixel(16,8);
setPixel(19,8);
setPixel(22,8);
setPixel(24,8);
setPixel(25,8);
setPixel(26,8);
setPixel(10,9);
setPixel(12,9);
setPixel(14,9);
setPixel(17,9);
setPixel(19,9);
setPixel(20,9);
setPixel(22,9);
setPixel(24,9);
setPixel(10,10);
setPixel(11,10);
setPixel(14,10);
setPixel(17,10);
setPixel(19,10);
setPixel(21,10);
setPixel(22,10);
setPixel(24,10);
setPixel(26,10);
setPixel(10,11);
setPixel(15,11);
setPixel(16,11);
setPixel(19,11);
setPixel(22,11);
setPixel(24,11);
setPixel(25,11);
setPixel(26,11);
}


// clear the screen
void clearScreen()
{
for (index = 0; index < WIDTH; index++)
for (index2=0;index2<=HEIGHT;++index2)
{
frameBuffer[index][index2] = _BLACK;
}
}

// the setup routine
void setup()
{
//cli();
pinMode (SYNC_PIN, OUTPUT);
pinMode (DATA_PIN, OUTPUT);
digitalWrite (SYNC_PIN, HIGH);
digitalWrite (DATA_PIN, HIGH);

clearScreen();
drawArduinoPong();
}

void loop()
{
// iterate over the lines on the tv
for ( line =0;line< DISPLAY_LINES;++line)
{

// HSync
// front porch (1.5 us)
PORTB = _BLACK;
delayMicroseconds(1.5);
//sync (4.7 us)
PORTB = _SYNC;
delayMicroseconds(4.7);
// breezeway (.6us) + burst (2.5us) + colour back borch (1.6 us)
PORTB = _BLACK;
delayMicroseconds(0.6+2.5+1.6);


//calculate which line to draw to
newLine = line >>4;
delayMicroseconds(1);

//display the array for this line
// a loop would have been smaller, but it messes the timing up
PORTB = frameBuffer[0][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[1][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[2][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[3][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[4][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[5][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[6][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[7][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[8][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[9][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[10][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[11][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[12][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[13][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[14][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[15][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[16][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[17][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[18][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[19][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[20][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[21][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[22][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[23][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[24][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[25][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[26][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[27][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[28][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[29][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[30][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[31][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[32][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[33][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[34][newLine];
delayMicroseconds(1);
PORTB = frameBuffer[35][newLine];
delayMicroseconds(1);

// klugdge to correct timings
PORTB = frameBuffer[36][newLine];
PORTB=PORTB;
PORTB=PORTB;
PORTB=PORTB;
delayMicroseconds(3);
}

delayMicroseconds(10);
//vsync
PORTB = _SYNC;
// remainder of sync period
delayMicroseconds(250);


}
von http://sites.google.com/site/alastairparker/arduinopong hab den code bissel gekürtzt auf des wesentliche. jedoch hab ich kein sauberes bild mehr es stimmt irgendwas mit dem timing nicht mehr
das bild rollt nicht sondern verzerrt werd mal noch ein foto machen fals es von nöten sein sollte