Changes in 2.2.1 (July 8, 2005):
- Fixed several compilation warnings and errors for different platforms (Volker)
- Fixed FPU tag word restore in FXRSTOR instruction (Stanislav)
- Added missing scancodes for F11 and F12 to BIOS translation table (Volker)
- Bochs disassembler bugfixes (h.johansson)
- About 5% emulation speed improvement (h.johansson)
- Handle writing of zero to APIC timer initial count register (Stanislav)
- Enable Idle-Hack for 'TERM' GUI (h.johansson)
- Reduced overhead of BX_SHOW_IPS option to minimum. Now every simulation
could run with --enable-show-ips without significant performance
penalty. (Stanislav)
- Fixed pcipnic register access (Volker)
- Limited write support for TFTP server in 'vnet' networking module added (Volker)
- Changed some timing defaults changed to more useful values (Volker)
- WinXP/2003 style common controls now supported (Vitaly Vorobyov)
- Updated LGPL'd VGABIOS to version 0.5c (Volker)
-------------------------------------------------------------------------
Changes in 2.2 (May 28, 2005):
Brief summary :
- New floating point emulator based on SoftFloat floating point
emulation library.
- improved x86-64 emulation
- Cirrus SVGA card emulation added
- status bar with indicators for keyboard, floppy, cdrom and disk (gui dependant)
- many improvements in Bochs emulated I/O devices (e.g. PCI subsystem)
Detailed change log :
- CPU
- fixes for booting OS/2 by Dmitri Froloff
- fixed v8086 priveleged instruction processing bug (was also reported
by LightCone Aug 7 2003)
- exception process bug (was reported by Diego Henriquez Sat Nov 15
01:16:51 CET 2003)
- segment validation with IRET instruction
- CS segment not present exception processing with IRET
- several fixes by Kevin Lawton
- add MSVC host asm instructions (patch by suzu)
- fixed bug in HADDPD/HSUBPD (SSE3) instructions
- fixed bug in float to integer SSE/SSE2 convert instructions
- fixed BCD instructions implementation
- execution speed improvements (sshwarts and psychosmur)
- fix MSR_APICBASE base address (Kangmo Kim, Christian Neubert)
- change BX_PANIC messages to BX_INFO when behaviour exactly
matches Intel docs
- EIP > CS.limit case should always cause #GP(0), even in real mode.
Fixed all jump, call and ret instructions for 16/32 modes
- fixed using invalid segment register for MOV instruction (h.johansson)
- fixed ET bit mismatch between CR0 and SMSW instruction
- fixed possible simulator #DIVZERO fault when executing IDIV instruction
- fixed undocumented flags handling for BTS, BTR, SHR, SHLD, MUL and IMUL
instructions (Stanislav Shwartsman)
- added missed #GP(0) exception when loading incorrect flags combination
to CR0 (Stanislav Shwartsman)
- in case of --enable-ignore-bad-msr enabled read ignored MSRs as zero
- enabled #DE, #TSD and #MCE bits in CR4 register, previosly setting
of one of these bits generated #GP(0) (Stanislav, Volker Ruppert)
- exceeding the instruction length limit of 15 bytes (this only can
occur when redundant prefixes are placed before an instruction)
generate #GP(0) (Stanislav Shwartsman)
- corrected PAE functionality
- CPU (x86-64)
- fetchdecode fixes for x86-64 and 3DNow! (Stanislav)
- fixed CF flag handling for SHL instruction in x86-64 mode (Stanislav)
- implemented CR8 register (aliased to APIC.TPR[7:4]) (Stanislav)
- implemented NXE bit (No-Execute page protection) support (Stanislav)
- STOSQ instruction emulation fixed (Avi Kivity)
- allow null SS selector for MOV SS, POP SS, and LSS instructions
in long mode (Avi Kivity)
- ignore segment bases for all segments (except FS and GS) in long
mode (Avi Kivity)
- allow SYSENTER/SYSEXIT instructions together with x86-64 (Stanislav)
- canonical address checking for RIP (Stanislav)
- FPU (Stanislav Shwartsman)
- totally rewritten all FPU code based on softfloat library
- significantly improved accuracy of all floating point
instructions.
- implemented all missed P6 and PNI floating point instructions.
- hundreds of bug fixes in FPU code.
TODO:
! Unmasked underflow/overflow should correct the result
by magic number for all operations, including float32
and float64.
- APIC (Zwane Mwaikambo)
- APIC arbitration
- Processor priority
- Various interrupt delivery fixes
- Focus processor checking
- ExtINT delivery
- Disassembler
- fixed MOV opcode 0x88, had exchanged the operands (h.johansson)
- fixed MOV opcode 0xA3, had wrong operand size (h.johansson)
- fixed BOUND opcode 0x62 (Stanislav)
- fixed CALLW opcode 0xFF /3 and JMPW opcode 0xFF /5 (Stanislav)
- fixed INS opcode 0x6D, had wrong operand size (Stanislav)
- fixed disassembly for repeatable instructions (Stanislav)
- fixed sign-extended immediate opcodes (Stanislav)
- fixed MOVSS/MOVSD instructions opcode names (Stanislav)
- fixed NEG instruction opcode name (Stanislav)
- fixed CMPXCHG8B instruction, had wrong operand size (Stanislav)
- fixed floating point instructions operands (Stanislav)
- experimental support of AT&T syntax in disassembler (Stanislav)
- I/O devices
- general
- handle cpu reset through port 0x92
- new memory handler API for PCI i/o and memory handling (Frank Cornelis)
- speaker emulation for Linux (David N. Welton) and Win32 (Volker Ruppert) added
- pci
- PCI slot configuration added for 5 slots (Volker)
- PCI irq routing, irq sharing and level sensitive irq mode implemented
- ne2k device appears as a Realtec 8029 NIC if connected to a PCI slot
- PCI IDE controller dummy device added
- PCI host device mapping for Linux (Frank Cornelis)
- PCI Pseudo-NIC emulation (Michael Brown)
- serial
- multiple serial port support added (4 ports now available)
- partial raw serial support on win32 (transmit data)
- serial port i/o mode option added (modes: null, file, term, raw, mouse)
- parallel
- multiple parallel port support added (2 ports now available)
- mouse
- serial mouse support (Volker)
- PS/2 and serial wheel mouse support (Ben Lunt)
- usb
- USB mouse and keypad support (Ben Lunt)
- config option to specify devices connected to USB ports
- vga
- VBE 8 bit DAC support added
- VBE memory now registered using DEV_register_memory_handlers()
- CL-GD 54xx SVGA emulation added (Makoto Suzuki)
- vga extension option added (choices: vbe, cirrus, none) (Volker)
- floppy
- raw floppy access now works on Win9x host (Ben Lunt)
- sb16
- MacOSX sound support (Brian Huffman)
- networking modules
- new: 'eth_vnet' simulates ARP, DHCP, ICMP-echo and read-only TFTP
(m_suzu, easeway)
- new: 'eth_vde' for Virtual Distributed Ethernet (Renzo Davoli)
- System BIOS
- turn floppy motor off 2 seconds after last read/write/recalibrate command
(Ben Lunt)
- int13_cdrom / 32 bit register update fixes for FreeBSD cdrom boot
(Fabrice Bellard)
- APM and system shutdown support (Fabrice Bellard)
- checksum calculation for expansion ROMs
- extended floppy parameter table (Mike Nordell, Derek Favcus)
- PCI IRQ initialisation added
- boot sequence with up to 3 boot devices added
- display libraries
- status bar with indicators for cdrom, floppy, harddisk and keyboard added
(done in rfb, sdl, win32, wx and x)
- 3rd (middle) mouse button now supported (rfb, sdl, win32, wx, x)
- mouse wheel support (sdl, win32, x)
- CTRL key + middle mouse button now used to toggle the mouse capture mode
(sdl, win32, wx, x)
- text mode split screen feature added (sdl, win32, wx, x)
- new gui function returns the display library capabilities (xres, yres, bpp)
for the Bochs VBE support
- display library specific options added - currently supported:
rfb: timeout (time to wait for client connection)
sdl: fullscreen (startup in fullscreen mode)
win32: legacyF12 (use F12 to toggle mouse)
- new graphics update API added (used by svga_cirrus) (Robin Kay)
- configuration interface
- win32: gui runtime dialogs replace textconfig runtime dialogs
- set default IPS to 10000000 in .bochsrc sample
- SB16 options dmatimer and loglevel now available at runtime
- configure script / compile
- --enable-ignore-bad-msr (ignore bad MSR references) option is enabled
by default
- --enable-mmx enabled by default only if cpu-level >= 5
- --enable-4meg-pages will be enabled by default if cpu-level >= 5
- fixes for Solaris SunPro (Robin Kay)
- --enable-pni option added
- --enable-show-ips option added, enable Instruction Per Second counter
in log file
- autodetection for lowlevel sound support added
- documentation
- a bunch of updates in user and documentation docs (Alexander Schuch)
- SF patches applied
[894595] MSR_APICBASE always returns APIC ADDRESS 0 by Kangmo Kim
[907163] ctrl_xfer8 clean/speed up
[907161] clean/speed up of io.cc
[899972] data xfer performance patch V 2.0.4
[904549] imul gives incorrect result in long mode
[877510] amd64 fixes...
[903465] SEGV in iodev/ne2k.cc line 1211 on Alpha architecture by Christian Lestrade
[903332] copy the bximage result to clipboard, etc by Lukewarm
[950905] Do not PANIC on rare, bad input from user-mode by h.johansson
[924428] ET bit mismatch between CR0 and MSW
[869822] a real SVGA implementation by m_suzu
[867045] fix for compiler errors on VC++ by m_suzu
[838601] support for the over 2GB disk size with MSVC++
[874816] local ARP/ping/DHCP simulator by m_suzu
[976066] Keyboard: Get controller version by Ben Lunt
[832330] ROMBIOS improvement (reduce stack consumption, etc.)
[977900] READ_CDROM_TOC and base address by Ben Lunt
[961665] WinXP patch to read physical CDROM's TOC by Ben Lunt
[978793] CDROM_SENSE_MODE medium_type by Ben Lunt
[615457] gif to png migration
[1021767] Portability in sb16ctrl.c by Robert Millan
[690400] gzip is confused by GZIP variable in Makefile
[567595] guess floppy image size from image file length by Tal Benavidor
[888426] bochsrc to make vnet useful by m_suzu
[1021758] GNU/k*BSD host support by Robert Millan
[969967] int 15/ah=87h clearing cr0 by Ben Lunt
[1048327] Russian Keymap by Dmitry Soshnikov
[851332] DESTDIR support for install_dlx by Ville Skytt
[970929] gdbstub support for MinGW tool chains by Muranaka Masaki
[1021740] Turn gdb stub into a runtime option by Charles Duffy
[1063329] RFB key press/release bug fix by Remko van der Vossen
[1079240] Wheel Mouse by Ben Lunt
[1087537] Fix for Win9x CD boot by lukewarm
[1083218] Start of wheel for USB #2 by Ben Lunt
[1098480] bochsrc: fixed floppya example by Alexander Schuch (ci-dev)
[1094407] configure.in: changed wxWindows to wxWidgets by Alexander Schuch
[1092058] serial.cc debug output cleanup by Ben Lunt
[1101165] APIC base address by Christian Neubert (flashburn)
[1093796] Fix for bug #1093786 (Nigel Horne)
[1082584] The start of Bus mice and USB mice by Ben Lunt
[1104695] msvc6 compatibility update (Royce Mitchell III)
[1059199] VGA text font bug fix (Anonymous)
[1108001] Null pointer on bx_atexit() (Ben Lunt)
[1112093] Fixed mouse cursor remain area drawing (Anonymous)
[1114826] Fix PCIBIOS (Destruction prevention of esi and edi)
[1095473] Reading from a CDRW (Fixed) by Ben Lunt
[1123895] x86-64 gdb/debugger fixes by Avi Kivity
[1145423] stosq simulation bugfix by Avi Kivity
[1151012] allow null ss on x86-64 by Avi Kivity
[1153327] ignore segment bases in x86-64 by Avi Kivity
[1153511] Fixed broken screen update (VBE)
[1152808] use 'install' instead of 'cp' during installation by Avi Kivity
[1159626] bugfix [1156776] keyboard scanmode fault by Rene Kootstra
[843328] PATCH: support for Flat-style ToolBar with Win32GUI
[1198308] PATCH: fix incorrect moving mouse cursor when wheel used
[1200515] add TFTP server to vnet & ipv4 bug fix by easeway
[1203305] tuntap incompatibility by Jan Kratochvil
- SF patches partially applied
[896733] Lazy flags, for more instructions, only 1 src op
[1005422] Improve mouse cursol Grub when 2 buttons-mouse use (WIN32)
(TODO: improved japanese keyboard support)
- patches applied
- patch.rombios.markevich (Start/Stop Wait Timer) (Kory Markevich)
- patch.apic-zwane (APIC fixes) (Zwane Mwaikambo)
- patch.v8086-exception.lightcone (LightCone)
- these S.F. bugs were closed
#957660 >>PANIC<< APIC: R(curr timer count): delta < initial
#1192654 60 x 90 text not quite right...
#1189097 "configure --with-sdl --with-rfb" doesn't compile
#1188980 Crash on XP when break into debugger
#1186693 Improving quality of ./configure --help
#1185245 Errors Making Bochs with Mingw32
#1185289 PSE is not enabled by default on Pentium
#1170620 info cpu scrolls away, is too long
#1157998 ips shown even when waiting for input
#663108 APIC Timer Bug
#831750 bochs unlike real PC in paging
#1182698 PAE support doesn't work
#954400 debugger causes segfaults when gcc 3.4.0 is used
#1171312 Possible SMP problem with ICACHE pageWriteStamp
#1179964 PANIC: RIP>CS.limit when jumping to longmode
#1171067 configure fails to add -lpthread
#1171065 Term UI needs -lncurses
#1171061 SDL GUI startup failure
#1022056 win32 error build debug version..c2146
#957190 error while attempting to compile sb16.cc
#804797 Debugger: visualization problem (jmp)
#675523 2.0.1 doesn't run on W2K?
#1167358 When using 5430PCI in DR-DOS Bochs would panic with a PUSHAD
#1164654 Bochs VBE bios causing exception 0B in Windows 95 (SVGA bios)
#1162983 conflicts which configure could detect
#1164536 Windows 95 B crashes during install
#526978 cygwin: in an rxvt, stdout is flaky
#542303 >>PANIC<< call_protected: CS selector null
#859457 BRICKS game doesn't work
#1159639 text modes on address A0000-BFFFF are not handled properly
#1164225 define BX_SUPPORT_X86_64 0
#1163720 ROL bug
#1156776 keyboard scanmode fault
#1162042 Duke Nukem 3D: >>PANIC<< iret: VM set on stack, CPL!=0
#1161945 ctrl_xfer32 compile/make error
#1157124 Bochs doesn't run with large amounts of memory in bochsrc
#1154266 weird INT handling in V86 mode
#1157051 default Bochs CVS doesn't work-out-of-the-box
#923954 enter() with level > 0, >>PANIC<< iret: return CS selector
#1098476 Privilege Problem after SYSEXIT
#1121734 Bochs crashes when shutting down Win95
#1099294 VESA for Win98 bogus
#1112836 PGE-Bit crashes Bochs
#947586 The specification difference in x86-64 emulation
#1117145 Push reset Button, APIC0 Error occur
#1123043 fpu stack pointer changed *despite* fault occured (e.g. #pf)
#1122066 PANIC: iret: IP > descriptor limit when installing os/2 warp
#809574 rm -f segfaults
#593952 SuSE rm segfaults
#929783 floppy not recogniced since 2.1
#1099298 SB16 for Win98 Bogus
#1079483 Reading from a CDRW
#549793 flaw in interrupt gate handling(exception.cc)
#692055 SMP Error
#805479 Booting from disk causes illegal instruction warnings
#909677 pc-speaker doesn't work
#831751 behaviour unrealistic
#661213 CR4.TSD is broken
#685508 PANIC: prefetch: RIP > CS.limit
#1037923 Non-executable page support missed (NX bit, x86-64)
#1106530 wrong disassemble result
#1105208 drive order for boot gets saved wrong
#661060 Problem with Win98SE
#837377 Norton Ghost don't boot
#876689 Unknown register 0x17 [CPU] / WIN98SE
#947282 Bochs segfault
#963317 Persistent Win98SE
#1101168 APIC base address change
#680737 panic when installing winme
#1097187 Install FC3 on bochs-win failed
#875461 vgabios-lgpl should be default
#594797 Bochs segfaults
#602994 bochs breaks boot kernel
#571539 FreeBSD Install from CD Fails
#774257 Device doesn't work under W98
#759228 Installing Suse 8.2 in Bochs on WinME
#792561 cant boot freebsd 5.1 from cdrom
#804004 Live cd will halt on boot..
#956173 FreeBSD won't boot iso install images in Bochs v2.1 or 2.2.
#864401 >>PANIC<< jmp_ev: IP out of CS limits!
#853831 Error on int 15h
#1094150 DR-DOS 7.03: panics when using multitasker
#655592 win98 hardwaredetection
#1093786 Solaris 9 installation CD fails
#959585 USB UHCI IO-Device
#963314 Redhat Fedora Installer Kernel Panic and Crash
#1086920 Bochs (cvs) doesn't compile on FreeBSD 5
#879050 Bochs reports enabled APIC without support
#1071199 dBaseII cause prefetch: RIP > CS limit
#1070812 typecast error while compiling wx.cc
#1068786 FSINCOS Cos value wrong at 90 degrees
#675248 Panic: EIP > limit on win98 install
#829793 [CPU ] prefetch: RIP > CS.limit
#1034059 >>PANIC<< prefetch: running in bogus memory
#1067813 pbm fpu_proto.h:144 ebuild gentoo bochs 2.1.1
#922034 bios not aliased at 0xFFFFF000, registers wrong after reset
#912666 Configure fails on Yellow Dog Linux 3.0.1
#922038 Unexisting memory should read back as 0xFFFFFFFF
#1019723 HD image
#1057814 Shadow RAM not aligned
#1057240 Invalid IRET32 implementation
#809682 >> PANIC << : prefetch: RIP > CS.limit
#618680 memory referencing problems
#724262 A few things (Windows 2.03, Wolfenstein)
#985375 Crash Mandrake 7.1
#913418 compiler errors with --enable-external-debugger option
#708847 CR8 access should not panic X86-64
#1039499 Compile error pcipnic.cc (cygwin)
#978024 compile against wxGTK-2.5.2 fails
#639073 MacOSX: Networking not implemented
#639074 MacOSX: Soundblaster not implemented
#963264 Latest CVS --enable-pcidev fails to configue on YDL Linux
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