The 7800 arrived in 1986 with near-arcade 2D graphics and, unusually for its era, full backwards compatibility with the 2600 library. It launched too late against the NES but its arcade conversions hold up.
Full-speed on all R36 models. Titles using the POKEY sound chip need the matching BIOS for correct audio.
The chip is the same in every model, so the rating is too. What differs is the screen: 4:3 panels suit most home consoles, the 1:1 square panel suits Game Boy and GBA and shows 4:3 games with bars.
The R36 handheld family runs Atari 7800 titles with perfect compatibility out of the box.