Bochs for Mac Free Download

BochsOverview

Bochs is a highly portable open source IA-32 (x86) PC emulator written in C++, that runs on most popular platforms. It includes emulation of the Intel x86 CPU, common I/O devices, and a custom BIOS. Currently, Bochs can be compiled to emulate a 386, 486, Pentium, Pentium Pro or AMD64 CPU, including optional MMX, SSE, SSE2 and 3DNow instructions. Bochs is capable of running most operating systems inside the emulation including Linux, Windows 95, DOS, and Windows NT 4. Bochs was written by Kevin Lawton and is currently maintained by this project.

Bochs can be compiled and used in a variety of modes, some which are still in development. The 'typical' use of Bochs is to provide complete x86 PC emulation, including the x86 processor, hardware devices, and memory. This allows you to run OSes and software within the emulator on your workstation, much like you have a machine inside of a machine. For instance, let's say your workstation is a Unix/X11 workstation, but you want to run Win95 applications. Bochs will allow you to run Win 95 and associated software on your Unix/X11 workstation, displaying a window on your workstation, simulating a monitor on a PC.

NEW

- 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 low-level CD-ROM 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 low-level 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.