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Latest release: Bochs 2.8
Bochs 2.8 is the first release after SVN to GIT transition hosted on GitHub.
Here is the brief summary of changes :
- Bugfixes for CPU emulation correctness (MONITOR/MWAIT, VMX/SVM, x87, AVX-VNNI, AVX-512, CET)
- Critical CPU emulation bugfixes for SHA and GFNI instructions, ADOX and XRSTOR/XRSTORS instructions (prevented boot of Win10)
- SVM: Implemented SVM VM_CR_MSR and INIT redirect (required for booting SMP with SVM)
- Implemented VMX MBE (Mode Based Execution Control) emulation required for Windows 11 guest
- Implemented VMX 'Shadow Stack Prematurely Busy' control
- Implemented MSR IA32_SPEC_CTRL Virtualization VMX extension
- Implemented Posted-Interrupt Processing VMX extension emulation
- Implemented Linear Address Separation (LASS) extension
- Implemented 57-bit Linear Address and 5-Level Paging support
- Implemented User-Level Interrupt (UINTR) extension
- Implemented Intel AMX extensions (AMX, AMX_INT8, AMX_BF16, AMX_FP16, AMX_COMPLEX)
- Implemented Intel instruction sets:
- MOVDIRI/MOVDIR64B, AVX512_BF16, AVX IFMA52, VNNI-INT8/VNNI-INT16, AVX-NE-CONVERT, CMPCCXADD, SM3/SM4, SHA512, WRMSRNS, MSRLIST, WAITPKG, SERIALIZE
- CPUID: Added Xeon Sapphire Rapids CPU definition
- Improved 64-bit guest support in Bochs internal debugger, added new internal debugger commands
- Bochs debugger enhanced with new commands (setpmem, loadmem, deref, ...)
- Enhanced magic breakpoint capabilities. Refer to user documentation for more details.
- Updated Bochs instrumentation examples for new disassembler introduced in Bochs 2.7 release
- USB: Fixed/added USB 2.0 Compliance to all devices. Hub still needs a few additions
- USB: xHCI: added the ability to have more than one model of xHCI hardware. Currently there are two.
- USB: Added experimental MSD UASP emulation
- USB: Added OHCI as an EHCI Companion option. Now allows UHCI or OHCI specified as a configuration parameter.
- Disk images: Allows large VHD image files
- Fixed and enhanced the Floppy Disk emulation, VGA emulation fixes
- Expand maximum resolution for Banshee and Voodoo 3 from 1600x1280 to 1920x1440
- LGPL'd VGABIOS updated to version 0.9a (several VBE fixes / additions)
- Documentation updates and fixes
The binary packages for Linux and Windows are built with these features :
- x86-64 emulation with all optimizations enabled
- devices:
- chipset: PCI (i430FX / i440FX / i440BX), ACPI
- video: Bochs VBE, Cirrus SVGA and 4 Voodoo models
- sound: SB16 (ISA) and ES1370 (PCI)
- network: NE2000 (ISA/PCI) and E1000 (PCI)
- USB: OHCI, UHCI, EHCI, xHCI and 8 pluggable device types
- other: game port, bus mouse
- Display libraries:
- Linux: nogui, rfb, sdl2, term, vncsrv, wx, x
- Windows: nogui, rfb, win32
Details on what has changed since version 2.7
Previous release: Bochs 2.7
Bochs 2.7 is a major release. Here is the brief summary of changes :
- Bugfixes for CPU emulation correctness (CPUID/VMX/SVM fixes to support Windows Hyper-V as guest in Bochs)
- Improvements for the plugin handling to simplify Bochs extensions
- Added "multiple NICs" support to the NE2000 and E1000 devices
- Added experimental FTP service for networking modules 'vnet' and 'socket'
- Fixes and improvements for all supported Voodoo graphics adapters
- Added USB keyboard emulation with most of the keys supported
- GUI "cmdmode": create a headerbar event with key combo starting with F7
- LGPL'd VGABIOS updated to version 0.8a (new VGABIOS for Voodoo Banshee)
Details on what has changed since version 2.6.11
Bochs Binary and Source Releases
The latest release of Bochs is available in these file formats :
- Win64 binary NSIS installer package (EXE)
- Linux binary RPM (64 bit)
- Platform independant source package (TAR.GZ)
- Win32 specific source package prepared for VS2019 (ZIP)
- Linux source RPM
You can download any release since March 2001 on the
Files Page on SF.
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