Digital Integration protection

this is really a user unfriendly protection.

the protection sheme of the original release is 
extremely picky with the exact replay speed of 
the audio signal. if your tape does not load
try to slow down the tape player a little bit or
try to speed up your Specci slightly.

Loading the first protected block looks like a
load failure even when it loads correctly.
really crap idea! it seems to load actually
nothing, when i look at the Z80 during loading,
probably just does some testing on the signal
to detect an illegal copy.

Loading the second protected block, the main
data, shows no difference between synchronizing
on the pilot tone and loading data, so you 
only know that it is propperly loading when the
screen attributes are loaded and reveal the 
hopefully propperly loaded screen.

Also it seems that it loads only into an original
ZX Spectrum, the 128k models all seem to reset.

Finally, it has a Lenslock protection...

This is a real example of games which load better 
when cracked.

	[kio]