Stella v6.2.1 is compiled. Stella is a multi-platform Atari 2600 VCS emulator. The Atari 2600 Video Computer System (VCS), introduced in 1977, was the most popular home video game system of the early 1980's. Now you can enjoy all of your favorite Atari 2600 games on your PC thanks to Stella!

Stella v6.1.2 changelog:
Added interactive palette to Video & Audio settings.
Added 'Custom' palette, generated from user controlled phase shifts.
Added that adjustable audio & video settings are displayed as gauge bars.
Added four global hotkeys which allow selecting and changing numerous audio & video settings without having to remember the dedicated hotkeys.
Added 'Turbo' mode, runs the game as fast as the computer allows.
Added that paddle centering (per ROM) and sensitivity can be adjusted.
Added that mouse sensitivity for Driving controller can be adjusted.
Added paddle filtering in UI to avoid unwanted navigation events.
Added selectable dialog fonts.
Added separate positioning of launcher, emulator and debugger.
Added optional display to game refresh rate adaption in fullscreen mode.
Added option which lets default ROM path follow launcher navigation.
Added debugger 'saveaccess' function, which saves memory access counts to a CSV file.
Added displaying last write address in the debugger.
Added debugger pseudo-register '_scanend', which gives the number of scanlines at the end of the last frame.
Added detection of color and audio data in DiStella.
Restored 'cfg' directory for Distella config files.
Added TV Boy and 3EX bank switching types.
Removed unused CV+ and DASH bank switching types.
Added support for loading grayscale PNG images in the ROM launcher.

https://github.com/stella-emu/stella

http://www.emucr.com/2020/06/stella-v621.html