void bgx1_drawBitmap(uint8_t width, uint8_t height, const uint8_t bitmap[]) {
  const uint8_t * data = bitmap;
  uint8_t row_size = ((width-1)/8+1);
  uint8_t rows_per_tile = BITMAP_MAX/row_size;
  uint8_t x = bgx1_y;
  uint8_t y = bgx1_x;
  while (height) {
    bgx1_move(x, y);  <<<<<<<< In dieser Variante wird bgx1_move aufgerufen
    uint8_t h = (height>rows_per_tile)?rows_per_tile:height;
    bgx1_drawTile(width, h, data);
    while (h--) {
      data += row_size;
      height--;
      y++;
    }
  }  
}
 
void bgx1_drawBitmap_P(uint8_t width, uint8_t height, PGM_P bitmap) {
  PGM_P data = bitmap;
  uint8_t row_size = ((width-1)/8+1);
  uint8_t rows_per_tile = BITMAP_MAX/row_size;
  uint8_t x = bgx1_y; <<<<<< Warnung, unbenutzte Variable x
  uint8_t y = bgx1_x;
  while (height) {
                  <<<<<<<< Hier nicht
    uint8_t h = (height>rows_per_tile)?rows_per_tile:height;
    bgx1_drawTile_P(width, h, data);
    while (h--) {
      data += row_size;
      height--;
      y++;
    }
  }  
}