VBlank has seven different modes. The one that sees the
most use is mode 0, which performs all basic display and
audio functions. The purpose of the others is unknown.
VBlank relies on the following functions:
-joypad
-cgb palette update
-dmg -> cgb pal conversion
-bg map update
-vram tile update
-tile animations
-serial request
-game timer
Tile animation is large enough to warrant its own commit.
Just the strings for now. These are probably pointed to from elsewhere.
There is an unused/dummied string at line 90029 ("????????@").
Could someone have been removed from the credits?
There was an incompatible change to the json module api between py26 and
py27, causing gbz80disasm to not work with py26. The fix is to simply
alias the new loads method to the old read function.
A possibly better plan might be to not support py26 at all.
