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, DOS, Windows® 95/98 and Windows® NT/2000/XP.

Changes in 2.3 (August 27, 2006):

2

3 Brief summary :

4 - limited save/restore support added (config + log options, hardware state)

5 - configuration parameter handling rewritten to a parameter tree

6 - lots of cpu and internal debugger fixes

7 - hard disk geometry autodetection now supported by most of the image types

8 - hard disk emulation now supports ATA-3 (multiple sector transfers)

9 - VBE memory size increased to 8MB and several VGA/VBE fixes

10 - updated LGPL'd VGABIOS to version 0.6a

Complete change list --> HERE

>> Get it HERE

Rom Tool

3.90

 

* added: XML driven file header support. For detailed information, please consult the xmlheaders.txt file.

* misc: moved all set specific selection stuff from settings to setinfo window

* misc: renamed "?" button for set information

* misc: new apply button instead of OnKillFocus to apply regular expressions

* misc: www profiler xmls get a valid xml header

* misc: xml sax parser handles xml header and xml comments correctly

* misc: using updated zipclass library

* misc: drag'n drop operations bring windows to top position

* misc: optimized setinfo tree/list refresh

* misc: deleting a profile selects first profile in the current profile folder

* fixed: disabling name check falsely hides listed unneeded issues as well

* fixed: double entries in fixdatfiles if rom is listed several times in the scan results tree

>> Get it HERE.

SNES emulator

0.851 [TRAC]

 

* Config: Fixed a bug where the 768x717 resolution setting was not restored properly from the config file

* PPU: Fixed a bug which caused OBJ tile upper-page address offset to be incorrectly added only for lower-page tile references

* PPU: Fixed a bug in screen addressing in offset-change mode that affected tiles with V-offset-change disabled

* PPU: Fixed option to disable offset-change emulation

* Screenshots: Fixed a bug where all screenshots saved were blank

* Source: Removed some debugging code that was no longer needed and could cause issues when the period key was pressed

* PPU: Fixed a bug which caused incorrect behavior when OBJ tile count exceeded their time limit.

>> Get it HERE.

SNES emulator

08/27/2006 - bsnes v0.017 released

 

* This version adds major accuracy improvements, countless bugfixes and DSP-1 support. At the time of this release, the only remaining known bug in bsnes is with Uniracers 2-player mode, with well over 300+ games tested.

 

Changelog:

 

* DSP-1 support added [Andreas Naive, byuu]

* Added cooperative multithreading library, written by myself

* Rewritten CPU core, now bus accurate

* Rewritten APU core, now bus accurate

* Added cartridge database

* Added several PCB mappers, thanks to research from Overload

* Added several games to database, fixing several mapping-related bugs

* Improved mirroring [Nach, grinvader, byuu]

* vscroll bug in hires, interlaced mode fixed. Fixes RPM racing

* RTO X=256 bug corrected. Fixes Super Conflict title screen [anomie]

* Fixed bug in NTSC filter with hires games

* Updated snes_ntsc to version 2.0.1 [blargg]

* Fixed bugs in HiROM / LoROM memory mapping. Fixes countless games

* Fixed major bugs in HDMA routine. Fixes ToP, Mortal Kombat and Genjuu Ryodan

* Added out-of-order execution to CPU, APU synchronization for major speedup with no accuracy loss

* IRQs are now delayed after H/DMA transfers. Fixes Wild Guns

* HDMA transfers now kill active DMA channels that are on the same channel. Fixes Bugs Bunny and World Class Rugby. Special thanks to zones for researching this

* CPU emulation mode accuracy was improved

* Cleaned up port-specific code to ease porting

* Created unified Makefile, used by all ports [Nach]

* Created GTK+ port of bsnes (although input is currently broken)

* WRAM is now initialized to 0x55, SRAM to 0xff. Fixes Power Drive, Death Brade and RPM Racing

* Fixed extreme NMI / IRQ edge case. Fixes Chou Aniki

* Adjusted PAL execution speed. Fixes Earthworm Jim 2 (E) sound effects

* Fixed auto joypad polling bug. Fixes La Wares

* Fixed H/DMA bug that was preventing saves from working in Secret of Evermore

* bsnes low loads d3dx9_*.dll dynamically at runtime, it is no longer required

* Added support for 239-line PAL mode rendering

* As usual, there have been much more changes I've forgotten about since the last release

* Two C4 bugs fixed. Mega Man X2 / X3 have no remaining known bugs [anomie, byuu]

>> Get it HERE.