Orbitron disk drive sound (Apple II - Sirius)
Channel: AppleAdventures
Date: 2018-11-03

Orbitron (https://www.mobygames.com/game/apple2/orbitron_) was an action game published by Sirius software in 1981 for the Apple ][. The game uses half track from track 1.5 to track F.5. As you can see in the animated boot sequence, the game uses the lo-res graphics screen as a buffer for disk loading.

PS: The # of lives is stored in address $68 and you can get infinite lives by changing $678E from C6 to A5.

Credits:
Disk image: 4AM