On: Prince of Persia source code released (Apple II as...

[Terretta]

Apple II assembly coder here, and the book I used is in your second link, "Using 6502 Assembly Language" by Randy Hyde. Mine had your link's cover, not the cover shown on Amazon:

http://www.bombjack.org/commodore/books/pdf/A2_Hyde_6502_Asm...

See also http://www.callapple.org/cat/ap0010.htm and http://www.amazon.com/Using-6502-assembly-language-program/d...

For Apple II details, supplemented that with a number of patterns books like Beagle Bros Big Tip Book: http://beagle.applearchives.com/books/big_tip_book_ocrpdf.zi...