Amiga
The Amiga is a 16-bit personal computer family by Commodore, famous for it's multimedia programs and many games.
Ripping Tools
Maptapper
http://codetapper.com/amiga/maptapper/
Maptapper is a Windows application used to rip graphics and maps from Amiga games. It can also read Atari ST games and has rudimentary support for Commodore 64 games as well. Both the official website and the built-in help file have a basic tutorial on how to rip sprites from Amiga games.