Gopher2600 v0.27.0 is released. Gopher2600 is an emulator for the Atari 2600. Whilst the performance is not as efficient as some other emulators it is none-the-less suitable for playing games, on a reasonably modern computer, at the required 60fps. (The development machine for Gopher2600 has been an i3-3225, dating from around 2012.)

Gopher2600 v0.27.0 changelog:
Versioning
Window title shows the current version number
executing from the command line with "version" will display the version number
the -v flag outputs the git revision
eg gopher2600 version -v
VERSION command available in the debugger terminal
Bankswitching
Implemented UA mapping scheme
CRT Effects
Improved bevel effect
Improved noise implementation, which is now part of the interference effect
Added flicker effect
Debugger
LAST command correctly shows partial disassembly when running in CLOCK quantum
Added CYCLE quantum
6507 Disassembly
Improved disassembly when decoding previously unseen instructions
Renderer
Added simplified renderer targeting OpenGL2.1
Executable must be compiled to use this alternative renderer
New renderer does not support CRT effects or screenshots
Principle reason for addition is to support the Raspberry Pi
Bug fixes
Fixed crashes caused when the program window was resized so that it was too small
this only affected some debugging windows (eg. the disassembly window)

Download: Gopher2600 v0.27.0
Source:Here