Bochs v2.6.8

via http://www.aep-emu.de/

A new version of Bochs has been released.

Quote:

Changes since the last AEP reported version 2.6.5
Changes in 2.6.8 (May 3, 2015):

CPU / CPUDB

• Bugfixes for CPU emulation correctness (critical bugfix for x86-64 emulation)
• Memory type calculation support for Bochs debugger and instrumentation, to enable configure with --enable-memtype option.
• CPUDB: Added Pentium (P54C) configuration to CPUDB
• CPUDB: Added Broadwell ULT configuration to CPUDB
• Updated definition of instrumentation callbacks, see description in instrumentation.txt / Fixed instrumentation examples

Configure and compile

• Configure option --enable-fast-function-calls now also used for MSVC nmake.
• Some configure fixes for the GTK debugger support.

GUI and display libraries

• The VGA update timer mode now can be selected with the ´vga´ option.
• Release all pressed keys when the simwindow gets back the keyboard focus.
• Win32 gui: Captured mouse cursor now really trapped in window.
• SDL2: Implemented yes/no dialog (e.g. for VVFAT commit).
• Some fixes for wxWidgets 3.0 and unicode version compatiblity.
• Full save/restore support for enhanced gui debugger settings (window+font).
• Added debugger support for the term gui using a pseudo-terminal.

I/O Devices
Hard drive

• Added Oracle(tm) VM VirtualBox image support (VDI version 1.1)
• Re-enable "bulk I/O" repeat speedups extension.
• Some lowlevel cdrom code fixes for Windows and Linux.

Sound

• SB16: Fixed OPL chip detection by implementing ISA bus delay.
• SB16: Ported OPL3 emulation from DOSBox and partly removed legacy code.
• ES1370: Added MIDI UART output support.
• ES1370: Fixed critical bug that made Win9x drivers crash.
• Major rewrite of the lowlevel sound code.
• Added mixer thread support (required for all modules except ´sdl´).
• New mixer and SDL mixer are polling data from the PCM output buffers, the PC speaker beep generator and the OPL3 FM generator.
• PCM format conversion to 16 bit signed little endian.
• Added sound ´file´ module for VOC, WAV, MID and raw data output and added dual output support (device+file) in midi/wave mode 3.
• Added capability to set up the sound driver per service.

Floppy

• Fixed "Read ID" command for single-sided media (patch by Ben Lunt).

ROM BIOS

• Fixed keyboard scancode processing after keyboard intercept.
• Fixed rombios32 code to avoid incorrect ACPI table detection.

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Changes in 2.6.7 (November 2, 2014):

CPU / CPUDB

• Implemented AVX-512BW/AVX-512DQ/AVX-512VL extensions emulation.
• implemented AVX512-IFMA532 instructions emulation.
• implemented AVX512-VBMI instructions emulation.
• Bugfixes for CPU emulation correctness (critical fixes for AVX-512, CMPXCHG16B and VMX)
• Fixed Bochs segmentation fault crash with Handlers Chaining Speedups enabled when compiling with gcc, especially with low optimization levels.
• Reverted removal of reporting Architectural Perfmon support in pre-defined CPUID modules. Windows 8 and Windows 10 require Performance Monitoring to be reported to boot. To workaround possible Windows 7 64-bit installation issues: use bx_generic CPUID module, which doesn´t report Performance Monitoring in CPUID.

GUI and display libraries

• The VGA update timer and the status LED timer now always use the realtime mode independent from the ´clock´ option setting.
• Added native SDL2 GUI support to Bochs. To enable configure with --with-sdl2.
• Added new user shortcut "scrlck" (SDL/SDL2 using "Scroll Lock" for fullscreen toggle).
• Write enhanced gui debugger settings to file on exit and restore on initialization.

I/O Devices
USB

• xHCI model now emulates a NEC/Renesas uPD720202 device (patch by Ben Lunt).
• Added USB port specific option ´size´ for VVFAT disks (range 128M ... 128G). If the size is not specified or invalid, it defaults to 504M. Hard drive / HD image
• Fixed crash when using a "fixed" type VPC image.

ROM BIOS

• Fixed int74_function() for 4-byte (wheel mouse) packets.
• LGPL´d VGABIOS updated from CVS (fixed building VBE modes list)

Misc

• Visual Studio workspace files updated to VS2013Ex format.
• bximage_old/bxcommit: removed old obsolete image manipulation tools.
• Documentation fixes and updates.

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Changes in 2.6.6 (June 15, 2014):

CPU / CPUDB

• allow sandy bridge configuration even when AVX is not compiled in

Configure and compile

• fixed compilation error when 3dnow support is enabled
• speedup Visual Studio build by almost 20% by adding /Gr compiler option

Misc

• fixed minimizing win32 gui window and resolution change while minimized
• added compiled SeaBIOS 1.7.5 image into Bochs tree along with Bochs BIOS images
• documentation fixes and updates