Deep Sky Creations

Ultimate Emulator / System

Atari 7800

The ProSystem cartridge library, on two joysticks.

RazorA7800 plays NTSC Atari 7800 cartridges with the joystick, both buttons and the console's switches. It needs the console's BIOS, which you provide. Support is experimental, so some cartridges will not run yet.

1986

Platform Atari

In Ultimate Emulator Experimental
Core
RazorA7800
Firmware
Required
Game files
  • .a78
  • .bin
Players
Up to 2 on one PC
Online
Local only
Rendering
Original resolution

01 / Current support

Where Atari 7800 stands today.

Status describes the core, not every game. Compatibility is always title-dependent.

Experimental
Included with limited coverage.
Core
RazorA7800, a first-party core included with Ultimate Emulator. It is chosen automatically for Atari 7800 games.
Unrated
No comparable per-core performance rating is claimed.
Release note
BIOS required. No PAL or XM.

02 / Your collection

The files it plays.

These are the Atari 7800 game files RazorA7800 opens. Ultimate Emulator does not supply games; add them from your own collection.

Game files

  • .a78
  • .bin

Set up

03 / Firmware & BIOS

A BIOS you provide.

Atari 7800 games cannot start until its BIOS is added. You add it once, and Systems shows Ready.

Required
One file: the console's original 4 KiB NTSC BIOS. Ultimate Emulator ships none, and there is no replacement BIOS yet.

  1. Open Manage BIOS

    In Systems, select Atari 7800 and choose Manage BIOS. Its firmware page lists each file the system uses and whether it is required.

  2. Choose the file you own

    Check What file do I need?, then use Choose BIOS File, or Choose Firmware Folder if you keep your firmware together.

Set up

04 / Input

How it plays in your hands.

Connect a controller and it is mapped automatically. Change the layout for every game, for this system only, or for a single game in Settings → Controllers.

Atari 7800 in Ultimate Emulator

  • Two controllers, each with the joystick and the left and right buttons.
  • The console's switches: Reset is on Start and Select on Select. Core Options also set each player's controller type and the difficulty switches.
Controller Setup

05 / Picture

The original picture, on a modern screen.

Atari 7800 keeps its own picture: drawn at its original resolution and scaled to your window in the shape the console made.

Resolution
Drawn at its original resolution and scaled to fit your window, keeping the system's own pixel shape.
Graphics settings
Not offered for Atari 7800 yet. Integer Scale, cropping, pixel filtering and effects in Settings → Graphics apply to the other included systems.
Graphics

06 / Your progress

In-game saves and save states.

The game's own

In-game saves

  • Most Atari 7800 cartridges have no save memory. Where a supported cartridge has its own memory, it is kept as one save file per game.
Ultimate Emulator

Save states

  • Not available with this core.

Rewind is not integrated with this core.

Learn more

07 / Play together

Together on one PC.

A system profile does not make a single-player game multiplayer. The game decides how many can play.

On one PC
Up to 2 players, one controller each, in games made for more than one player. No account needed.
Across PCs
Not available. This system is local only.

08 / Honest compatibility

What to know before you play.

Current limits of the included core, as of this release.

Known limitations

  • PAL games are not supported.
  • Games that need the XM expansion, the High Score Cartridge, SaveKey or AtariVox are not supported.
  • Cartridges with extra sound hardware, including some POKEY boards, are not supported yet.
  • Light guns and other accessories are not supported.
Region
NTSC only. PAL cartridges are declined with a message.
Troubleshooting

09 / Gaming History

Why it mattered.

How Atari 7800 works in Ultimate Emulator is this page. Why it mattered is in the Gaming History collection.