Howto Extract PNG from binary file @ 0x80?

[flamesrock]

Hmm...I'm not sure exactly. One of the things I've read is that
sometimes stuff is compressed in a savegame file, but I don't know why
they'd do that with a png..

I have some code that does the exact same thing in php only I don't
understand php syntax and how they did it. Does it give any clues as to
whether its truncated or not? (assuming you understand php)
http://simcitysphere.com/sc4Extractor.php.txt (original, only extracts
png)
http://simcitysphere.com/regionFileDecode_inc.php.txt (extracts png and
some fancy stuff like image map position)

-thanks