Atari 7800
The Atari 7800 is a third generation console by Atari, succeeding their ill-fated Atari 5200 however problems within the company meant that the NES overtook its launch making it a second place console in the US. It is famous as the very first console with backwards compatibility, being able to run Atari 2600 cartridges without the need for peripherals.
Ripping Tools
Atari Rom Reader
http://loktar00.github.io/AtariRomDisplay/
This site already have the graphics of all 7800 games dumped, so ripping is as easy as picking a game and choosing the color palette however a few games use a different video mode so as a result, these don't have all the graphics displayed. These include Summer Games and Winter Games where the main sprites aren't displayed however the backgrounds are. Rampart and Ms. Pac-Man don't display any graphics at all.