add directory bochs

bochs/Bochs/bochs-2.6.1/README-bochs-2.6.1

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+Changes in 2.6.1 (April 7, 2013):
+
+- CPU / CPUDB
+  - Bochs is fully aligned with rev45 of the of Intel(R) Architecture Manual.
+    - Implemented Supervisor Mode Access Protection (SMAP) support
+    - Implemented VMX APIC Registers Virtualization and VMX Virtual Interrupt Delivery
+    - Implemented VMCS Shadowing and #VE exception secondary VMEXIT controls emulation
+    - Implemented RDRAND and RDSEED instructions
+  ! CPUDB: Added AMD FX-4100 (Zambezi) configuration to CPUDB
+  - Bugfixes for CPU emulation correctness (critical fixes for SVM and AVX2 emulation)
+
+- Bochs Debugger and Instrumentation
+  - Use Enhanced GUI Debugger instead of old-style wx debugger with wx gui.
+    The old-style wx debugger support was deprecated and removed from the source code.
+
+- I/O Devices
+  - Implemented 3dfx Voodoo Graphics card emulation based on DOSBox patch, to enable
+    configure with --enable-voodoo option.
+  - Hard drive / HD image
+    - Added full save restore support for most of the disk image formats
+    - undoable / volatile mode: added support of other types of r/o base images
+    - DLL HD support rewritten and enabled for WIN32 host
+  - PCI chipset
+    - Implemented i430FX chipset emulation
+    - USB UHCI always enabled in the i440FX case
+
+- Config interface
+  - Configure option --enable-misaligned-sse moved to runtime option in .bochsrc. The old
+    option is deprecated and should not be used anymore.
+  - moved 'user_shortcut' bochsrc option to the 'keyboard' option
+  - save log options per device to bochsrc
+  - win32: implemented scrollable dialog items for large parameter lists
+
+- GUI and display libraries
+  - Graphics snapshot feature rewritten to support all kinds of graphics modes
+  - wx: starting a second simulation without closing Bochs now almost possible
+
+- Tools
+  - bxcommit: added support for converting flat to growing mode images

bochs/Bochs/bochs-2.6/README-bochs-2.6

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+Changes in 2.6 (September 2, 2012):
+
+Brief summary :
+- More than 10% CPU emulation speedup !
+- Support for AMD's SVM hardware emulation (including extended XAPIC support).
+- Implemented support for new x86 ISA extensions.
+  Bochs is fully aligned with rev043 of Intel(R) Architecture Manual.
+- Improved emulation accuracy (critical fixes for APIC, VMX and AVX/XOP emulation).
+- Bochs internal debugger: new command to show state of a device from the debugger.
+- ROM BIOS: improved PCI boot ROM support (for VGA and other devices)
+- Networking:
+    - Ported Intel(R) 82540EM Gigabit Ethernet adapter emulation from Qemu.
+    - Added PCI network boot ROM support to all network adapters.
+    - Added TFTP support to the 'slirp' networking module.
+- Harddrive: added support for VirtualPC disk images, fixed sparse disk images.
+- Sound:
+    - implemented PC speaker beep using the lowlevel sound interface.
+    - SDL audio output support.
+- Added ability to set log action per device from .bochsrc.
+- Moved disk imaging, networking, sound and USB devices to subdirectories
+  in the iodev folder.
+
+Detailed change log :
+
+- CPU
+  - Implemented EPT A/D extensions support.
+    Bochs is fully aligned with rev043 of the of Intel(R) Architecture Manual.
+  - Implemented ADX (ADCX/ADOX) instructions support, the feature can
+    be enabled using .bochsrc CPUID option.
+  - More than 10% CPU emulation speedup with even more optimal lazy flags
+    handling, stack access optimizations and cross branch trace linking.
+  - 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 for 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
+  - 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
+  - Implemented "hideIPS" option in rfb, sdl, win32 and wx libraries
+  - wx: fixed random freezes with wxGTK and "show ips" feature enabled
+  - rfb: the "show ips" feature now works on Windows host
+
+- 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
+  [625877]  wx: power button -> thread deadlock
+  [3534063] Configure does not check for flex presence
+  [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)

bochs/README_FIRST

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+Problem when run with the newer Bochs software and fixing methods
+-----------------------------------------------------------------
+gohigh@sh163.net, gohigh@gmail.com
+2006.08.28
+
+
+When running the Linux kernel 0.1x in Bochs environment with version number
+newer or equal to 2.2.6, you may encounter an problem at the bootstrap period
+with the error message "HD controller not ready". There are two general 
+methods you can use to fix this problem. 
+
+1. One way is tricky but easy and without modify the kernel code. you need 
+only copy the harddisk image file to another name and modify the .bxrc file
+to attach it as a second or slave hd in it. Fox example, if you have a hard
+disk image file with name is hdc-0.11.img, just copy it to produce another 
+disk image with a name something like hdd-0.11.img. Then modify 
+the corresponding configuration file, for example, bochsrc-hd.bxrc. Add the 
+following line, and the parameters in the line should be the same with your
+hdc-0.11.img line. Then you can go with the newer bochs system.
+
+ata0-slave: type=disk, path="hdd-0.11.img", mode=flat, cylinders=410, heads=16, spt=38
+
+
+2. The second mothod is to modify the linux/kernel/blk_drv/hd.c file in you 
+Linux kernel 0.11. Change the code at line 163 and 165:
+
+163 int retries=10000;
+164
+165 while (--retries && (inb_p(HD_STATUS)&0xc0)!=0x40); 
+
+as following:
+
+163int retries=100000;
+164
+165while (--retries && (inb_p(HD_STATUS)&0x80)); 
+
+then rebuild the kernel and write it to the boot floppy image file:
+
+dd if=Image of=/dev/fd0
+
+
+(End)

bochs/README_SECOND

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+Incompatible issues with recent Bochs version (2.4.x)
+-----------------------------------------------------
+	Jiong Zhao  	gohigh@gmail.com
+	2010.10.15
+
+The bochs image files collected in this directory are built several years ago.
+They can be ran normally under Buchs 2.2.X version. But when you use these image
+files under one of the recent high Bochs verions, you may encounter some incompatible
+problems when using those old  *.bxrc with them. 
+
+The fix method is easy. Just modify the *.bxrc file as following: 
+
+1. Modify the "romimage" line to the exact like this:
+	romimage: file=$BXSHARE/BIOS-bochs-latest
+
+2. Modify the "vgaromimage" line like this: 
+	vgaromimage: file = $BXSHARE/VGABIOS-lgpl-latest
+
+3. Comment out or delete the following lines:
+	#parport1: enable=0
+  	#floppy_command_delay: 50000
+  	#ips: 4000000
+  
+That's all!
+
+
+
+