Atari 7800 emulators

Atari 7800

North American 7800
Developer	Atari
Type	Home video game console
Generation	Third generation
Release date	1986
Discontinued	1992
Introductory price	$140
Predecessor	5200 SuperSystem
Successor	Panther, Jaguar
Emulated	✓

The Atari 7800 was a console produced by Atari and released in 1986. The CPU was a custom designed variant of the MOS Technology 6502 that ran at 1.19-1.79 MHz. It had 4KB of RAM and a display of 320x200. It attempted to directly compete with the Nintendo Entertainment System, but ultimately failed to do so. It's best known nowadays as the first ever home console to come with integrated backwards compatibility, specifically for the 2600.

Emulators

Name	Platform(s)	Latest Version	libretro	Accuracy	FLOSS	Active	Recommended
PC / x86
BupSystem		0.9.6.4	✗	High	✗	✓	✓
MAME		git artifacts 0.265	✓	High	✓	✓	✓
A7800		5.2	✗	High	✓	✓	✓
ProSystem		1.3 (Windows) Rikki & Vikki (source) git (libretro)	✓	?	✓	✓	✓
EMU7800		5.4.0.1	✗	Mid	✓	✓	✗
BizHawk		2.9.1	✗	?	✓	✓	✗
Mobile / ARM
EMU7800		1.8	✗	Mid	✓	✗	✓
Consoles
PSP7800		1.4	✗	Mid	✓	✗	✓
Wii7800		git	✗	Mid	✓	✗	✓
A7800DS		4.7	✗	Mid	✓	✓	✓
ProSystem		1.3	✓	?	✓	~	✓

Hardware features and peripherals

Name	BupSystem	MAME	ProSystem
XE Light Gun	✓	✓	✗
Rikki & Vikki	✓	✗	✗ Tachi's fork and libretro PR support

Rikki & Vikki

PenguiNet's Rikki & Vikki is a special 7800 game, you have to add extra code to the emulator to make it work. The developers of MAME never considered buying its game cartridges. Now the new game cartridges are no available for purchase and you can only play the Windows version of it, so it is impossible for all MAME-based 7800 emulators to support this game.

tachimarten or Tachi added Rikki & Vikki support for ProSystem and libretro. It's a pity that Greg Stanton no longer updates ProSystem. You can only download its code from Tachi's Rikki branch and compile it yourself because Tachi does not provide an installation package.

BupSystem is the only official emulator known to support this game.