Gopher2600 v0.51.0 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 changelog:
ELF / PXE
ELF files identified as PXE as appropriate
added PXE variables and colour window
disassembly window shows "sequential" disassembly rather than the normal bank-based disassembly, which is meaningless for streaming type cartridges (ELF and ACE)
added vcsWrite4() strongarm function
6507
SP initialised correctly
corrected decimal mode operation
now passes all klas2m5 tests
fixed implementation of ARR (undocumented instruction)
corrects result of test binary in https://forums.atariage.com/topic/385516-fingerprinting-6502-processors
added https://github.com/SingleStepTests/65x02 tests
all undocumentated instructions correctly implemented. although the "internal parameter" of the XAA and LAX instructions are currently different to what the tests expect
Additional Features
use the -video command line option to record video and audio
requires separate installation of ffmpeg and ffprobe
support for the portable.txt file
when a file of that name is present, the emulator's configuration directory will be named Gopher2600_UserData and in the same location as the emulator binary.
see #44 for initial request
Other Bug Fixes and Other Changes
atarivox subtitler will not be muted. ie. the subtitles will show even when sound is not audible
corrected UV calculation for YUV conversion (PAL palettes)
paddles automatically inserted when mouse is captured (right mouse button in play window)
changed -elf option to -dwarf
elf has different connotations in the context of the Atari2600 since the option was first added. besides, dwarf more clearly indicates that it is debugging data that is being specified by the option
F12 screenshotting now excludes FPS information and other status icons

Download: Gopher2600 v0.51.0
Source:Here