2009-11-04
- char_gen.vhdl: add csr_posx_out, csr_posy_out to port. Make it register readable (done 2009-11-04)
- several async. resets recognized. Sync. resets better?
- Make screen width, screen height and FPS register readable (done 2009-11-04)

2009-11-08
- Double-buffering to reduce artifacts on buffer write by host and buffer read by VGA master.
  currently double-buffer can only be updatetd if msten = 0. Buffer updates should be always possible
  for large screen change, which need more time than one frame. (done 2009-11-08)
- VGA-INT every n-th buffer change?

2009-11-11
- adding a blitter for blockcopy of whole frame or box region. (done 2009-11-22)
- Adding blitter capability to read from three sources (image 1, image 2 and mask), manipulate and store back of whole frame or box region

2009-11-25
- Adding blitter capability to read/write single 32-Bit words (and even bytes)
- Adding blitter capability to blit constant color
- Increase BLIT_CHUNKSIZE to LINEFIFO_DEPTH/2 for more performance (needs modification to FSM)