Hatari v2.4.0 is released. Hatari is an Atari ST/STE/TT/Falcon emulator for GNU/Linux, BSD, BeOS, Mac OS X and other systems that are supported by the SDL library. The Atari ST was a 16/32 bit computer system which was first released by Atari in 1985. Using the Motorola 68000 CPU, it was a very popular computer having quite a lot of CPU power at that time. Unlike many other Atari ST emulators which try to give you a good environment for running GEM applications, Hatari tries to emulate the hardware of a ST as close as possible so that it is able to run most of the old ST games and demos. Hatari is open source software and is distributed under the terms of the GNU General Public License (GPL).

Hatari v2.4.0 Changelog:
Major highlights of this new version :
Major rewrite of the internal delays/timers, speed up emulation by ~10% on average
Various CPU improvements (FPU, IPL timing)
Faster CPU emulation for 68000 in cycle exact mode (speed up emulation by ~7%)
More accurate MFP emulation, combined with the new internal timers
Improved VBLANK position in 50 and 60 Hz mode
Improved cycle accurate YM2149 emulation, supporting new effects (syncsquare in maxYMiser v1.53)
Better value for MFP GPIP bit 7 (STE DMA sound and Falcon sound)
For SCSI, improve "Mode Sense" and "Report Luns"
For IKDB, better emulation of commands $A and $B
Better MIDI using PortMidi (Linux/Windows/macOS)
Better RS232 support for BSD/macOS
Some fixes for Gemdos HD mode
Many debugger improvements
Hatari now defaults to the SMALL_MEM build option, using less RAM during emulation
... and many more. See doc/release-notes.txt for the full changelog.
Fixed demos:
Hackabonds Demo (wrong vblank detection)
We Were @ HD version under GEMDOS HD (file handle access)
Fixed programs:
maxYMiser FM v1.53 by gwEn (support for syncsquare effect)
Fixed games:
Chambers of Shaolin : DMA sound was wrong in STE mode with 1 MB RAM (MFP GPIP bit 7)
Super Hang On : fix flickering raster colors (bclr #0,$fffffa0f sometimes happened at the same time timer C expired)

Download: Hatari v2.4.0 x86
Download: Hatari v2.4.0 x64
Source: Here