[ATARI] kat5200 1.0.2 2/08/2026

• ROM Support Updates
  • - 512k hybrid support (AtariBlast! / Bug Hunt)
  • - Correct 64k bankswitch detection
  • - Better default mapping detection
  • - Most all 5200 roms should 'just work' without setting mapping
• Core Updates
  • - Full CPU instruction support and fixes
  • - ANTIC/POKEY/GTIA timing updates and fixes
• Updated Input System
  • - Allows multiple input entries per emulated function
  • - Game Controllers enabled and configured by default
  • - Mouse Fixes and Updates
• Updated Configuration
  • - TOML text format instead of database
  • - Per ROM profiles (allows ROM specific settings)
• Updated UI
  • - Used Nuklear immediate mode UI
  • - Allows for keyboard, mouse, and / or controller input
• Initial Setup Update
  • - Option to download a large 5200 ROM set
  • - Option to setup Mouse as Trackball/Mouse as Paddle games
  • - Option to setup Two stick games (Robotron/Space Dungeon)
  • - Option to scan rom directories
• Update to SDL3
  • Windows, Linux, MacOS, Android and Android TV support
  • Many other fixes, user enhancements, etc

Notes:

• ROM set comes from here: https://archive.org/download/atari-5200-large-rom-collection/Atari_5200_Large_ROM_Collection.zip.Note there is no Ken Siders Beef Drop in this
• Windows version may complain about unrecognized app on first run
• MAC OS version not developer signed, may need to enter following command to bypass gatekeeperxattr -dr com.apple.quarantine /Applications/kat5200.app
• Android version is not in play store, you will need to side load
  • Make sure and enable Unknown sources
  • Note that some file browser apps allow ftp network server for copying files over network
• kat5200 assigns game controllers in order they are found by default
  • The user can assign specific controllers per player
  • This is important for Android TV as the remote can be first controller
  • Key mappings: Back+Start is back to gui; Back+RightThumbClick is exit
  • See input Settings for the rest
• Shaders from libretro project are precompiled
  • After saving to use a shader the first time, you must restart
  • Once verified that shaders work, set renderer to gpu and save to prevent future restarts on change
• Thanks to Avery Lee for the Altirra Hardware Reference, Trebor for his palettes, and all the users who have given feedback over the years

This release contains the following bug fixes and changes:

•   Added : RetroArch GLSL shader support
  •   Check for shaders here:
    •    glsl-shaders
•   Added : Redesigned sound module
  •   improves sound for many games
  •   added 48kHz Sound sample frequency
  •   Improves (fixes?) Linux sound using ALSA
•   Added : Combo Inputs
•   Added : User warned when input conficts occur
•   Added : User can make kat5200 portable
•   Added : -reset_config command line parameter
•   Added : Several conversions/homebrews to default database
•   Changed: -config loads alternate db3 config file
•   Fixed : Atari 800 Pitfall crash on start (Added LAX CPU op)
•   Fixed: CPU cycle counts for page crossing
•   Fixed : Input conflicts on 8-bit computer default profile
•   Fixed : Atari 800 'A' key updates not loaded
•   Fixed : Recall state loads incorrect video/input profiles
•   Fixed : Simualte Analog needs to respect Sensitivity
•   Fixed : Couple of potential crashes

Notes:

• Only supporting modern OpenGL, no shaders on Raspberry Pi
• When obtaining shaders from the RetroArch site above, download the zip and extract somewhere reachable by kat5200
• See Manual for portable use and importing shaders
• Check version 0.7.0 for other notes

[02/18/17] kat5200 version 0.7.1 released!

• Fixed: Xbox360 style controllers cause Auto-Detect exit in GUI
• Fixed: GUI Stick Left not set on first try
• Fixed: Controls can get fixed up when setting up multiple players
• Fixed: Keyboard setup for keys with Up/Down/Left/Right in name
• Fixed: Screen colors in video config preview window
• Update: Mouse Wheel in GUI lists works
•  Fixed: Check for SDL2 version 2.0.5 and disable function if older (SDL_SetWindowResize)
• Fixed: multiple controllers control player 1 on startup
• Fixed: Player 3/4 keypad not working
• Fixed: Player 3/4 axis weirdness (Simulate Analog forced on)
• Fixed: Bounty Bob works again (and works for 8-bits)
• Fixed: Unified Win32 release (XP and above works with one build)

Notes:

• Special thanks to Paul Rataczak for controller and multiple player testing for this release!
•  Check version 0.7.0 for other notes

River Raid (1983, Activision)

kat5200 version 0.7.0 released!

• Update to SDL2
• Mac 0S X support
• Fixed: Remapped PC keypad keys don't work
• Fixed: Joystick D-pad/Axis to Atari keypad /
• keyboard doesn't work
• Fixed: No keypad/keyboard after Load State
• Fixed: Windows version AppData directory issue
• Video: Passively use current display mode
• Video: Auto fit to mode (no zoom needed)
• Video: Allow window resize (no zoom needed)
• Video: Don't stretch video, letterbox
• Added: Config file location to GUI
• Updated: Various 8-bit cart settings

Notes:

• The database is updated after install if found. This may take several seconds depending on how big the database is. Trying to go backwards to 0.6.2 with an updated database may result in crash. If you have spent considerable effort creating your config, I suggest backing up the kat5200.db3 file just in case.
• Sound under Linux with ALSA is not good with SDL. Install PulseAudio and set the appropiate SDL environment variable (SDL_AUDIODRIVER=pulseaudio).
• Windows users need to install the Visual C++ 2015 redistributable (x86 version). Get here: https://www.microsoft.com/en-us/download/details.aspx?id=48145