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Trebor

A7800 - the Atari 7800 Emulator

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I've been having sound problems with a7800 on my laptop but when installed it on my desktop I have no sound issues (its mostly the music issue its kind of off on the laptop,but works perfect on my desktop) so I guess I keep a7800 on desktop but I'll still use my laptop for game developing since I have atari dev studio(2600 and 7800 games) and jag studio(jaguar) on there.

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Under the laptop, open the a7800.ini file and modify the OSD VIDEO OPTION section...

 

From:

image.png.744feab545dbee8f75b3dfedbdacd86f.png

 

To:

image.png.cd65f59897666f7d9f97f7c001f082b0.png

 

See if the above modification improves things. 

 

Laptops (especially if relatively older) can have less video support options than a desktop.  Setting bgfx-->auto will tone down what A7800 is trying to leverage as far as video features and tweaking, and will also try to utilize what works best for your setup.  This should hopefully improve overall performance, so the music doesn't sound "kind of off".

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will try it thanks my laptop is old when I got it from ubid action it originally had windows vista ,250 hard drive and min 2gb mem, since then upgraded to win 10
put in 4 gig of mem and 450 ssd

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31 minutes ago, Dan Iacovelli said:

will try it thanks my laptop is old when I got it from ubid action it originally had windows vista ,250 hard drive and min 2gb mem, since then upgraded to win 10
put in 4 gig of mem and 450 ssd

@Trebor I checked ini file in a7800 those already set to auto  so I figured change it to bgfx and it just freezes. I'm good with on my desktop anyways. I got stella and a7800 on desktop as well. I can always save my games I do on laptop to a usb drive and load it on my desktop for 7800 games. I have harmony cart for 2600 testing and I do have skunkcard for jaguar (I just don't have a concerto,dragonfly or 7800 GD yet(I'll prob get concerto when  hokey is ready or 7800 GD(maybe both))

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***UPDATE***

 

A7800 v5.1

 

What's new?

  • pokey emulation updated for better two-tone mode accuracy
  • fix for cart format [email protected] crash

For all supported OS's (Linux, macOS and Windows) there is a 64-bit (x64) build.

 

Quick and easy portable install for Windows:

1. Download A7800, unzip to a new/clean preferred location [I.E. C:\A7800].

2. Download A7800_Optional_Files_20220331, unzip to same location as A7800.

 

Starting Console:

 

1. Double click A7800.exe.

2. Choose a console (Double click with mouse pointer or highlight with arrow keys and press 'Enter'), either NTSC or PAL with desired console/palette temperature: Cold, Hot, or Warm.

3. Select a console configuration (Double click with mouse pointer or highlight with arrow keys and press 'Enter'): Standard Console, High Score Cartridge, XM Expansion Module.

 

Selecting ROM:

 

1. After a system is started, press the ‘Tab’ key.

2. Highlight the option "Load ROM file" with arrow keys and press 'Enter', or double click with mouse pointer.

3. Perform the same respecting the available "cartridge (cart)" slot that appears.

4. Choose a ROM from the displayed "roms" subfolder on the screen; otherwise, navigate to the location of where the ROMs are stored. ROMs should have headers in proper *.a78 format.

 

Default Mappings:

 

1. Console: Pause = O; Select = E; Reset = T.

 

2. Player 1: Up, Down, Left, Right = Arrow Keys; Button 1 = Z; Button 2 = C.

 

3. Player 2: Up, Down, Left, Right = I, K, J, L; Button 1 = A; Button 2 = D.

 

Changing Controllers:

 

1. After a system is started, press the ‘Tab’ key.

 

2. Highlight the option "Controller Selection" with arrow keys and press 'Enter', or double click with mouse pointer.

3. Change a controller by highlighting it and then press either the left or right arrow key.

 

4. After a controller is changed, reset the emulator by selecting “Reset”.

 

***See the included illustrative manual in the download archive for more details and options***

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