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A7800

A7800 is an Atari 7800 emulator and a fork of the MAME Atari 7800 driver.

Place
#15 of 25
Score
5.8
A7800's website

What A7800 is

A7800 is an Atari 7800 emulator and a fork of the MAME Atari 7800 driver. It is free and open source, with support listed for Android, Linux, macOS, and Windows. The emulator covers a broad set of controllers, including Proline and VCS joysticks, lightguns, paddles, driving controllers, keypads, Trak-Balls, Amiga mice, and ST mice. Display choices include selectable palettes and enhanced screen options. BIOS files are optional. A7800 maintains MAME compatibility and syntax, so existing MAME configuration files and front ends can be reused. Project-listed technical work includes changes to MARIA DMA timing, RIOT emulation, POKEY sound, and SALLY and MARIA performance. The project labels version 5.2 as its latest release and notes corrections to the POKEY poly9 sequence and initial state. That release specifies 64-bit x64 builds for Linux, macOS, and Windows. The maker describes its GitHub organization as a collection of development tools for the Atari 7800 console.

Good

  • BIOS files are optional
  • Supports a wide range of controller types
  • Maintains MAME compatibility and syntax
  • Available on Android, Linux, macOS, and Windows

Watch out

  • Version 5.2 lists 64-bit builds only for desktop systems
  • No purchase price or subscription plans are listed

Who it suits

A7800 suits Atari 7800 users looking for an emulator with support for many controller types and MAME-compatible configuration. It may also fit users who want to choose palettes or enhanced screen options.

Verdict

A7800 offers Atari 7800 emulation with broad controller support and MAME compatibility. Its version 5.2 release lists desktop x64 builds, while Android is also among the supported platforms.

The facts

Each one read from A7800's own pages, with the date it was checked.

Where it runs

BIOS
BIOS files are optional and no longer required.checked 8 Oct 2026
Release platforms
The v5.2 release states that 64-bit x64 builds are available for Linux, macOS, and Windows.checked 4 Oct 2026

What it does

Controller support
It supports emulation of Proline and VCS joysticks, lightguns, paddles, driving controllers, keypads, Trak-Balls, Amiga mice, and ST mice.checked 8 Oct 2026
Developer tools
The a7800dev and a7800pdev machine targets display DMA usage per scanline.checked 8 Oct 2026
Display options
It includes selectable palettes and enhanced screen options.checked 4 Oct 2026
Emulation updates
The project says it fixed a bug in RIOT emulation and improved POKEY sound emulation.checked 8 Oct 2026
Graphics and performance
It includes SALLY CPU and MARIA graphics chip performance adjustments, selectable palettes, and enhanced screen options.checked 8 Oct 2026
Intended audience
The maker describes its GitHub organization as a collection of development tools for the Atari 7800 console.checked 4 Oct 2026
Latest release
The page labels v5.2 as the latest release and lists corrections to the POKEY poly9 sequence and initial state.checked 4 Oct 2026
License
The project source is offered under GNU GPL version 2 or later, with source files potentially having licenses specified in their headers.checked 8 Oct 2026
License and pricing
The repository is public and describes A7800 as an emulator; its pages opened here list no purchase price or subscription plans.checked 4 Oct 2026
MAME compatibility
It maintains MAME compatibility and syntax for reuse of MAME configuration files and front-ends.checked 8 Oct 2026
Purpose
A7800 is an Atari 7800 emulator and a fork of the MAME Atari 7800 driver.checked 4 Oct 2026
Timing
Maria DMA timing has been improved with accurate DMA hole penalties.checked 8 Oct 2026
Timing and hardware
The project lists improved MARIA DMA timing, a RIOT emulation fix, POKEY sound improvements, and SALLY and MARIA performance adjustments.checked 4 Oct 2026
Warranty
The license states that the program is provided without warranty, to the extent permitted by applicable law.checked 8 Oct 2026
What it does
A7800 is an Atari 7800 emulator and a fork of the MAME Atari 7800 driver.checked 8 Oct 2026

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