Colorado artist Chiptune David (he makes chiptunes!) has released his new EP, Dungeon 1, clearly influenced by the original Zelda game on NES. The first track from the EP is actually a chippy remix of the Legend of Zelda theme.
The EP also includes 6 original tracks and clocks in at 20 minutes. You can download it free from Chiptune David's myspace page or from the myspace page of Chain Chomp Records.