;;Not values but register position in memory
    X_end = $04
    Y_end = $05
    X_pos = $FC
    Y_pos = $FB
    dy= $0c
    dx = dy
    dy_2 = $0607
    dx_2 = dy_2
    V = $0809
    D = $0a0b
    ;;These are also used in pixel_draw. Look there to find out more
    byte_to_paint = $FE ;Byte with one 1 that corasponds to a pixel.
    btp_mem_pos =$494A; byte to paint memory position ;Position of byte on screen