86Box v4.2.1 is released. 86Box is a low level x86 emulator that runs older operating systems and software designed for IBM PC systems and compatibles from 1981 through fairly recent system designs based on the PCI bus.

86Box Features:
Easy to use interface inspired by mainstream hypervisor software
Low level emulation of 8086-based processors up to the Pentium with focus on accuracy
Great range of customizability of virtual machines
Many available systems, such as the very first IBM PC 5150 from 1981, or the more obscure IBM PS/2 line of systems based on the Micro Channel Architecture
Lots of supported peripherals including video adapters, sound cards, network adapters, hard disk controllers, and SCSI adapters
MIDI output to Windows built-in MIDI support, FluidSynth, or emulated Roland synthesizers
Supports running MS-DOS, older Windows versions, OS/2, many Linux distributions, or vintage systems such as BeOS or NEXTSTEP, and applications for these systems

86Box changelog:
Microtouch: Simplify mouse button and calibration checks by @mourix in #4656
Microtouch: add option to turn off visible mouse crosshair by @mourix in #4657
Miscellaneous UI fixes by @lemondrops in #4666
Microtouch: add controller type selection and start adding legacy modes for them by @mourix in #4668
Microtouch: serial fixes, poll rate increases, mode status, cleanups by @mourix in #4681
Microtouch: fix compilation warnings, optimize command handling and liftoffs by @mourix in #4685
AMD/DC390 SCSI fixes of the day (August 4th, 2024) by @TC1995 in #4688
More ESP SCSI fixes (LUN mainly) by @TC1995 in #4690
Fix Tandy 1000 SX minimum RAM by @jriwanek in #4694
Tandy related cleaning, and logging compile fixes in pit_fast by @jriwanek in #4696
add helper script to download ROMS to user's home directory by @tjemg in #4695
Assorted compile fixes by @jriwanek in #4699
SCSI fixes of the day (August 8th, 2024) by @TC1995 in #4702
TGUI9440 (VLB/PCI) change of the day (August 9th, 2024) by @TC1995 in #4706
Cleanups & fixes by @jriwanek in #4707
Correctly devbranch mitsumi CDROM by @jriwanek in #4708
More DEV_BRANCH related cleaning by @jriwanek in #4709
Video changes of the day (August 12th, 2024, S3/TGUI/SVGA) by @TC1995 in #4712
dynarec related compile improvements by @jriwanek in #4714
S3 ViRGE class: Rethreading for future investigation. by @TC1995 in #4717
Attempt at fixing the threading of the ViRGE. by @TC1995 in #4718
S3 changes (and TVP3026) of the day (August 15th, 2024) by @TC1995 in #4719
Delete 86Box-install-roms.sh by @jriwanek in #4725
Add a link to the build guide to README.md by @jriwanek in #4724
ViRGE changes of the day (August 20th, 2024) by @TC1995 in #4735
qt_private_headers are needed for both qt5 and qt6 by @jgilje in #4736
Mach64 changes of the day (August 21st, 2024) by @TC1995 in #4738
Minor but important changes to minivhd's dynamic/diff vhd handling by @TC1995 in #4750
Honor the composite mode of the PCjr and Tandy 1000 by @TC1995 in #4751
Split off AMD K5 from K6 by @jriwanek in #4752
Add miroCRYSTAL 3D video card by @MaxwellS04 in #4723
Some fixes to the Streams engine of the ViRGE/Trio3D by @TC1995 in #4760
Fix SDL UI failing to build when C++11 threads are disabled by @lemondrops in #4758
More ViRGE fixes (August 29th, 2024) by @TC1995 in #4764
Update dates for 4.2.1 release by @jriwanek in #4778

Download: 86Box v4.2.1
Source: Here