Gopher2600 v0.25 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 v0.25 changelog:
ARM
improved ARM disassembly, particularly for Thumb-2 instructions
implementation of FPU and instructions
registers window in debugger
COPROC STEP command forward by single ARM instruction
useful in conjunction with source window, local/globals window and/or registers window
preparatory work for ARM level quantum control
ELF
"byte streaming" of ROM data - leading to significant performance improvement
initialisation sections executed before main() function
Notifications
notification icon for coprocessor development files
transparency setting
fixed conditions under which combinations of notifications are shown
Bug Fixes
fixed bad image stutter when refresh rate is inconsistent
crash in timeline window when scrubbing past end of rewind history
thumbnailing no longer causes the application to hang if the ARM emulation crashes
FPS measurement was broken if television was being nudged
"fastload" supercharger ROMs (ie. bin files) would crash debugger
Known Outstanding Bugs
rewinding of ELF ROMs when byte streaming is active sometimes produces a
skewed image

Download: Gopher2600 v0.25
Source:Here