Heres a few examples and the code for the GX-chunkylib for blitz ][
this is only a demo version and the code is quite messy.  if
you want to try the code supplied you will have to sort out the blitzlib
"gxchunkyBlib.bb2" and compile it as a library at the moment it is
quite likey to crash as theres no error checking and it will quite happily
mess up any area of memory if you point it in the wrong direction. This
version is also quite slow as ive just changed it so it move ckys around
the screen and changed from a 12bit chunky  to 8 bit chunky with 8 bit
palette (takes up less memory) chunkys are 126*84 ish (see code) and are
8 bits per pixel which point to a chunky palette 12bits per colour *256
cols. some gxf packages will conver to this (gfx master) but i wrote a
custom one which converts 256col and ham which is proberly the best way as
you dont have to alter the file and cut of the headers cos code doesnt
reconise any headers.
anyway if i see any need for this lib ill fix up a proper working version.

                                            Anthony Corcutt