#'veloper's blues
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There is a bug in 1.0/1.1 kickstart. After using ScrollLayer, calls to
MoveLayer/SizeLayer may trash your bits. It is fixed for 1.2 The 1k limit is
the blitter limit. It can only do blits of about 1k by 1k. Actual limit may
be 16 pixels less because of shifting during blitting. The architecture of
the display is not limited to 1kx1k however the NTSC standard has it's own
limitations.