Changes in 2.6 (not yet released):

- CPU
- Implemented EPT A/D extensions support.
Bochs is fully aligned with the latest published revision of
Intel Architecture Manual (revision 043) now.
- Implemented ADX (ADCX/ADOX) instructions support, the feature can
be enabled using .bochsrc CPUID option.
- Another 10% CPU emulation speedup with even more optimal lazy flags
handling and stack access optimizations
- Support for AMD´s SVM hardware emulation in Bochs CPU, to enable
configure with --enable-svm option
- Implemented AMD Extended XAPIC support, to enable set .bochsrc CPU
APIC option to ´xapic_ext´
! Added Corei5 750 (Lynnfield) configuration to the CPUDB
! Added Turion64 (Tyler) configuration to the CPUDB
! Added AMD Phenom X3 8650 (Toliman) configuration to the CPUDB
! Added Corei7 3770K (Ivy Bridge) configuration to the CPUDB
- Bugfixes for CPU emulation correctness and stability
(critical fixes in APIC/X2APIC, VMX and AVX/XOP emulation)

- Bochs Debugger and Instrumentation
- Implemented new debugger command ´info device [string]´ that shows the
state of the device specified in ´string´
- Improved debug dump for ne2k, pci, pic and vga/cirrus devices. Added
debug dump for pci2isa, i/o apic, cmos, pit, floppy and dma devices.
- Added TLB to CPU param tree - now it can be browsed from Bochs internal
debugger and Bochs debugger GUI through param tree interfaces
- Implemented ´writemem´ debugger command to dump virtual memory block
starting from selected linear address into a file
- Updated definition of instrumentation callbacks, see description in
instrumentation.txt / Fixed instrumentation examples

- Configure and compile
- Moved disk imaging, networking, sound and USB devices to subdirectories
in the iodev folder.
- pcidev: enable support for Linux kernel 3.x (Debian patch by Guillem Jover)
- debugger: generate parser / lexer files only if all required tools are present

- Config interface
- Added support for direct device plugin loading with bochsrc directive for
devices which have the same name for the plugin and config option.
- The bochsrc option ´plugin_ctrl´ can now be used to load/unload optional
plugins directly when parsing the config file or command line. See the bochsrc
sample for supported devices.
- Moved bochsrc parsing / writing and config parameter handling for networking,
sound and USB devices to the plugin device code. The options are only
available when the corresponding plugin device is loaded.
- Added ability to set log action per device from .bochsrc.
- Added new command line option ´-noconsole´ to disable the console
window on Windows host.
- Renamed PCI Pseudo NIC option to "pcipnic" (for direct plugin loading)
- Moved several related options to the new "keyboard" bochsrc option.
- Added new parameter ´rtc_sync´ for the ´clock´ option. If this option
is enabled together with the realtime synchronization, the RTC runs
at realtime speed.
- Moved MWAIT_IS_NOP bochsrc option from CPUID to CPU so it can be set
even if cpu was configured using pre-defined CPUDB profile.
- Allow larger CPU ´quantum´ values when emulating SMP systems for speed
(quantum values up to 32 are allowed now).

- I/O Devices
- Networking
- Ported Intel(R) 82540EM Gigabit Ethernet adapter emulation from Qemu,
to enable configure with option --enable-e1000
- Added PCI network boot ROM support to all network adapters
- Added TFTP support to the ´slirp´ networking module
- PCI
- added "auto-assign to PCI slot" feature for PCI-only devices
- DMA
- Added the capability to transfer more then one byte / word per ISA DMA cycle
- VGA
- Major rewrite of the vga / cirrus code:
- vgacore (shared standard VGA emulation code)
- vga (Bochs VBE and PCI VGA)
- cirrus (CL-GD 5430 ISA / CL-GD 5446 PCI)
- Added VGA graphics blinking support
- More accurate vertical and horizontal retrace emulation
(based on the DOSBox implementation)
- hard drive / hdimage
- added new disk image mode ´vpc´ for VirtualPC images
- undoable mode: added coherency check (flat image size and timestamp)
- sparse mode: fixed read support
- Sound
- implemented PC speaker beep using the lowlevel sound interface
- added SDL audio output support

- ROM BIOS
- improved PCI boot ROM support (for VGA and other devices)
- added MADT entry for Interrupt Source Override to ACPI tables

- GUI and display libraries
- implemented "auto-off" timer for status LEDs indicating a data transfer
- Implemented "hideIPS" option in sdl and wx libraries
- Added support for sending absolute mouse position values from the gui if an
absolute pointing device (USB tablet) is active (rfb, sdl, win32, wx, x).
- Gui debugger now supported when using sdl gui on Windows

- Tools
- bxcommit: added support for converting growing to flat mode images
- bxcommit: support command line options and non-interactive (quiet) mode
- bximage: increased maximum disk size to 8 TB

- SF patches applied
[3540389] Patch 5 : Change memory reference functions argument order by Yeong-uk Jo
[3539254] Patch 4 : Memory reference optimization 2 by Yeong-uk Jo
[3539251] Patch 3 : Memory reference optimization by Yeong-uk Jo
[3539237] Patch 2 : Some optimization by Yeong-uk Jo
[3539228] Patch 1 : ROM BIOS Compatibility patch by Yeong-uk Jo
[3505209] Fixed combo box size by Konrad Grochowski
[2864391] Gui debugger default regs by Thomas Nilsen
[3486555] Fix critical stack leak in Win32 GUI by Carlo Bramini

- these S.F. bugs were closed/fixed
[3555237] NE2000 doesn´t compile on OS/X
[3553168] X doesn´t build in latest code on OS/X
[3550175] Crash when saving snapshot to directory instead of file
[3548109] VMX State Not Restored After Entering SMM on 32-bit Systems
[3548108] VMEXIT Instruction Length Not Always Getting Updated
[3545941] Typo in preprocessor symbol
[3538731] Missing CR8 register
[3538574] Missing XD flag ( Execute Disable ) when showing PTEs
[3537556] Missing initializations
[3537309] Unable to use the debug GUI with SDL and plugins
[3537473] GUI debugger only shows 32-bit CRx registers in x86-64 mode
[3533426] UHCI PCI interrupts
[3459359] svga cirrus initialization
[3535228] info gdt does not show long mode segments
[3531806] Bochs crashes (SIGSEGV) when starting via ssh console
[3531807] Various missing initialization values reported by Valgrind
[635789] mapping mode 0 not supported
[3307201] BOCHS panics when execute HBIOS.COM
[3528809] IO APIC index register width
[3528516] Missing #if in soundmod.h
[3526069] MADT:Interrupt Source Override missed
[3518753] update dump after manual chages to memory contents
[3516859] bug in svn e1000 module
[3516029] stepping not working in debugger GUI in case of smp vm
[3510403] closing config dialog box closes entire simulator
[3459998] Bochs cannot be compiled outside the source tree
[2905969] can´t use --enable-gdb-stub on vs2008
[3294001] Bochs GUI doesn´t appear properly for 2nd Bochs copy
[3493315] Changing VGA 9/8 dot mode causes screen corruption

- these S.F. feature requests were closed/implemented
[3540441] automatically enable devices in plugin control
[1251456] command line method to query bochs for features
[3409396] sdl sound
[3519794] debugger´s ability to save physical/linear memory dumps
[1429612] Idea how to speedup simulation - stack direct access
[1703452] Other Network Devices?
[2919376] Disable show the console window
[534271] can´t set log action by device (bochsrc)