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Bochs/bochs/CHANGES
Volker Ruppert 33d73b8f2c - changes for bugfix release added
2005-07-06 19:26:33 +00:00

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Changes in 2.2.1 (not yet released):
- 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)
- WinXP/2003 style common controls now supported (Vitaly Vorobyov)
-------------------------------------------------------------------------
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<74>
[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
#586282 Mac OS X, will not "make"
#699532 CVS (as of 2003/03/07) cannot read disk images
#639275 wrong more than 2GB size DVD-ROM
#766020 info registers / dump_cpu get old eflags
#655920 QuickBasic (qbx.exe) panics
#676188 Error BX_MAX_DIRTY_PAGE_TABLE_MEGS
#923821 LOCK not generating exceptions properly
#1007747 Wrong configure?
#1022577 show "call" command crashes bochs every time
#681849 SuSE 8.1 Compile problem
#660322 Install bochs 2.0 on SuSe 8,0
#1022587 "Unrecognized args" message wrong after invalid show command
#833118 TUN/TAP interface bug
#1022178 tuntap module mangles incoming broadcast packets
#1028682 Report incorrect disk parameters of floppy
#1026234 make fails on Cygwin because of missing .exe extension
#1026241 --enable-cpp needed for .conf.win32-cygwin
#855323 BIOS Panic at rombios.c, line 1563
#762773 ROM checksum is not checked in rom_scan_loop
#657604 concat_image_t.lseek to byte -1378816 fa
#800140 No AH=83h INT15h implemented
#831965 Win32.zip BIOSes in wrong directory
#873280 bximage crashes after createing "growing"
#892223 bochsrc-sample.txt/vgaromimage option error
#1014361 Bximage on WinXP won't create image
#651510 bximage won't create larger than 2GB
#759206 bximage fails on Win32 for hd images over 2Gb
#759210 Bochs fails on image files over 2Gb on Win32
#799785 bximage doesn't work
#903345 Problem compiling harddrv.cc
#933303 Bochs cannot lseek() HD images > 2GB on W32 platforms
#888438 bximage crashes...(hacked fix included)
#871720 bximage 2GB file size limit
#930368 Can't create big hard drives (>2 GB)
#912496 IDIV can cause simulator divide error
#522111 Host os SIGILL, booting grub from hd
#1005052 DMA Controller Model Problem
#552939 Bochs window doesn't resize when win311
#989478 I-Cache and undefined Instructions
#661008 make install fails
#845691 Workaround: Ne2k and Windows 2000 not working
#923662 BIOS diskette motor countdown byte broken
#848141 VGA problems running Scitech Display Driver on Win95
#799370 Problem booting ReactOS 0.1.3
#670143 No rule to make config.h
#653444 with vbe/lgpl bios, scrn updates broken
#655696 quickstart broken?
#659350 FDC
#620853 Ne2000 ethernet card *NOT* supported
#607611 Numlock
#543476 Sound card does not work in Windows 95
#529554 unsupported VBE features DISPI update
#487316 Access violation on Win32
#576253 RTC too fast
#489748 io read from address 000003c0, len=2
#656861 Gentoo Linux panics in VGA code
#787184 Video BIOS's don't checksum correctly
#988529 textconfig [Save options to] function output obsolete option
#987293 Cannot accesss header/toolbar
#988246 floppy read error
#933199 speedup Bochs compilation 4x -> suggestion
#979106 Incorrect disassembly table entry
#658374 FPU incorrect emulation
#706933 Problem with the F12-Key
#477043 math_abort panic in RH 7.1
#634371 Floating point problems
#681138 // is not valid in C
#643300 cpuid feature flag 15, cmov and fcmov
#913697 missing division by 0 exeption in fpu emuation
#923682 FSTENV/FINIT problems
#923855 FPTAN doesn't work right with full NPX stack
#924379 ET bit mismatch between CR0 and MSW
#716116 Direct floppy access
#962919 Mac: iodev/cdrom.cc disordered
#954751 Two FPU.CPP in project
#954359 Compile faile is 3dnow support is selected without SSE support
#906412 FreeSCO error
#942060 FDC Controller not conforming to specifications
#938522 Win XP installation fails
#923613 BOUND instruction exception handling is broken
#923223 memtest86 errors
#593342 autoconf script doesn't regenerate clean
#616116 Crash on exit...
#922042 shutdown through port 92 does not work
#891633 02839990390p[CPU0 ] >>PANIC<< RDMSR: Unknown register 0x17
#923653 DAA instruction is broken
#911225 obscure AAA / AAS bugs
#837206 Problems with numerical keys
#658765 BOCHS halts in runtime config
#890734 Bochsrc Parser Bug with commas included in strings
#877285 MSR_APICBASE zero upon startup
#526984 SDL compiled in cygwin just quits
#886406 I/O permissions bug
#883239 undefined symbols in gui/siminterface.h:1215
#419647 on OSF1, cxx hates C++ inlines
#809790 "No rule to make target `devices.cc?..."
#873654 How compile without plug-in support ?
#837161 Test case for BX_CPU_C::IRET32
#888116 mmx.cc compile error
-------------------------------------------------------------------------
Changes in 2.1.1 (February 8, 2004):
- fix bug in int15h function 0xe820 (Christian Neubert)
- fix vmware3 disk support on big-endian platforms (Christophe Bothamy)
- fix conditions for NM exception on FWAIT instruction (Christophe)
- fix symbol conflict in rfb and x display libraries (Volker Ruppert)
- allow 16 bit writes to ne2k page 0 (Kenneth Stailey)
- notify display libraries on change of bpp (Volker)
- fix bug in int13h function 0x10 (Volker)
- fix floppy dialog error on win2k (Volker)
- fix adress check in TSS IO permission bitmap (Christophe)
- fix buffer overflow vulnerability pointed out by SeSoX (Christophe)
- updates for MacOS compile (Daniel Gimpelevich)
-------------------------------------------------------------------------
Changes in 2.1 (January 9, 2004):
Brief summary :
- New disassembler
- 3DNow!/SSE/SSE2/PNI instruction support
- Vmware3/Sparse/Undoable/Growing harddisk images support
- many VGA emulation improvements (e.g. high/true color VBE modes added)
- No more X11 vga font required
Detailed change log :
- CPU
- added emulation of AMD 3DNow! instructions set. (Stanislav Shwartsman)
Bochs now could decode all AMD 3DNow! instructions.
Most of instructions still not implemented, but the basis already presents.
Configure --enable-3dnow to enable 3DNow! support.
Notes :
- These instructions are not implemented yet:
PFPNACC_PqQq, PF2IW_PqQq, PFNACC_PqQq, PFCMPGE_PqQq, PFMIN_PqQq,
PFRCP_PqQq, PFRSQRT_PqQq, PFSUB_PqQq, PFADD_PqQq, PFCMPGT_PqQq,
PFMAX_PqQq, PFRCPIT1_PqQq, PFRSQIT1_PqQq, PFSUBR_PqQq, PFACC_PqQq,
PFCMPEQ_PqQq, PFMUL_PqQq, PFRCPIT2_PqQq
- CPUID does not report 3DNow! instruction set.
- added emulation of SSE/SSE2 floating point instructions. (Stanislav)
All SSE/SSE2 floating point instructions are fully implemented using
free softfloat library (including DAZ support and floating point
exceptions). Correctness of the emulation checked with heavily random
testing.
- added emulation of SSE3 (PNI) instructions (Stanislav)
Currently only 3 PNI opcodes still not implemented:
FISTTP m16int, FISTTP m32int, FISTTP m64int
- added P4 CPU support to CPUID instruction. (Stanislav)
- fixed implementation of FXSAVE/FXRSTOR instructions. (Stanislav)
- bugfix: unallowed lock prefix cases must cause #UD exception. (Stanislav)
- fixed fetchdecode bug caused #UD in SYSENTER/SYSEXIT instructions
in 32bit mode. (Stanislav)
- fixed fetchdecode64 bug caused wrong decoding of opcodes containing
BxImmediate_IvIw or BxImmediate_IwIb in x86-64. (Stanislav)
- fixed bug in int01 (opcode 0xF1) emulation. (Vitaly Vorobyov)
- fixed bug in x86 debugger with dr0-dr3 registers (Vitaly)
- fixed bug with mov to/from dr register in v86mode.
(now exception is generated (according to Intel documentation)
instead of panic) (Vitaly)
- fixed stack limit checking, now message is generated as BX_DEBUG,
rather then BX_PANIC, and exception code is executed. (Vitaly)
- instrumentation code updated. (Stanislav)
- fix flaw in IO bitmap permission of TSS (Christophe Bothamy)
- cpu resets on triple fault (Christophe)
- remove calculation on cr3 in dtranslate_linear to increase
emulation speed (Conn Clark)
- numerous x86-64 fixes (Peter Tattam)
- FPU
- hundreds of bugfixes in FPU emulation after checking of the emulation
with testfloat (Scott Duplichan).
- Fixed cases:
- floatx80_to_int32, floatx80_to_float32
- floatx80_to_float64, floatx80_round_to_int
- floatx80_add, floatx80_sub,
- floatx80_mul, floatx80_div
- implemented FCMOVcc instructions (Stanislav)
- 64-bit addressing support for x86-64 mode (Peter)
- Disassembler
- replaced Bochs disassember. New table-based disassembler fully supports
all IA-32 instruction sets including all FPU/MMX/SSE/SSE2/SSE3 opcodes.
(Stanislav)
- I/O devices
- general
- i/o access mask implemented, unallowed cases are now handled in the devices
code and cause a BX_ERROR (Volker Ruppert)
- include slowdown timer as a runtime option (Christophe)
- netBSD : fix serial, ethernet, cdrom (fredb, uebayasi and David Laight)
- VGA
- color depth 15, 16, 24 and 32 bpp supported by VBE (Volker and
Christopher Nelson for 32 bpp on win32). Supported by sdl, x, win32 and wx.
- SVGA mode 0x6A (800x600x4bpp) implemented (Volker)
- new CGA graphics modes 640x200x1bpp and 160x100x4bpp (text mode 80x100) (Volker)
- raster operations AND, OR and XOR in write mode 2 (based on SF patch #707931) (Volker)
- 'split screen' in standard VGA graphics mode implemented (Volker)
- 'double scan' and 'double width' now handled in the VGA code (Volker)
- more accurate emulation of the horizontal and vertical retrace (Volker)
- changeable start address and variable line length supported by all
graphics modes (Volker)
- VBE: preserve video memory feature implemented (Volker)
- additional text mode features prepared (handled in the display library
code) (Volker)
- PCI
- add experimental PCI VGA card (Mike Nordell)
- add experimental PCI USB card (Ben Lunt)
- Harddisks
- per device selectable harddisk modes :
- undoable, volatile, growing disks support (Christophe)
- sparse disks support (justinSB)
- vmware3 disks support (Sharvil Nanavati)
- fix non detection of hard drives by minix2 (Christophe)
- implement atapi command 0xA8 read (12) (Christophe)
- mode sense command updated (Hartmut Birr)
- sb16
- opl2 support enhanced (James E. Flemer)
- ne2k
- tap support for FreeBSD (Ronald Klop and Gen Otsuji)
- fix when booting with grub (Keir Fraser)
- cmos
- date/time change support added (Volker)
- UIP bit and divider chain reset implemented (Volker)
- initial time can now be set to local time or utc (Christophe, Daniel Gimpelevich)
- keyboard
- keyboard reset function (0xff) now resets the keyboard (Volker)
- gameport
- new standard PC gameport device (real joystick connected on Linux and
win32 only). Enable it with --enable-gameport or the SB16 emulation (Volker)
- serial
- FIFO emulation (UART type 16550A) implemented (Volker)
- floppies
- 160k,180k,320k floppies support (Ben Lunt)
- display libraries
- X11
- onboard vgacard charmap usage (no need for external X11 vga font any more) (Christophe)
- vgacard charmap change support (Christophe)
- fix black stripes on partial exposes (Dirk Thierbach)
- headerbar redraw optimizations (Dirk Thierbach)
- external font files and their installation mechanism removed (Volker)
- belgian keymap support (Wouter Verhelst, Eric Brasseur)
- win32 + wx + x: new application/window icon (bochs.ico / icon_bochs.xpm) (Volker)
- sdl + win32 + wx + x: new textmode features: variable line length,
char width switch, horizontal and vertical pel panning (Volker)
- win32 + wxMSW: key event handling rewritten (Volker)
- win32: status bar at the bottom of the simulation window added (Volker)
- wxMSW: resource problems fixed - wx dll plugin works now without errors (Volker)
- term: variable line length and cursor enable/disable feature implemented (Volker)
- rfb
- textmode: charmap change, better cursor emulation, variable line length (Volker)
- headerbar works now (power, reset and user button are okay) (Volker)
- key event handling rewritten (Volker)
- Bochs-RFB waits up to 30 seconds for a client connection. The emulation
starts after connecting the client. (Volker)
- carbon: Alt/Ctrl/Shift key handling rewritten & SysRq/Ctrl-Break key support added
(Daniel)
- configuration interface
- gui dialogs as an extension of the textconfig interface on win32 added (Volker)
* ask dialog
* save text snapshot
* user button shortcut
* floppy image change
- wxwindows configuration dialogs improved (Volker, Christophe)
- support tools
- bximage : added support for
- growing disks (Christophe)
- sparse disks (justinSB)
- created bxcommit tool for undoable disk images (Christophe)
- System BIOS :
- fixed int15 function e801 (get memory size) (Christophe)
- added int75_handler for FPU Dos Exceptions (Christophe)
- added int16 function 0a (Get Keyboard ID) (Volker)
- added support for ElTorito Harddisk-on-CD emulation (Christophe)
- fixed ATA/Serial ioport conflict (Daniel)
- VGA BIOS : updated to version 0.4c (Christophe)
- configure script/compile/porting to other OSes/installation
- fixes for compilation with MSVC (Andrew Zabolotny)
- fixes for cross-compilation (Jeroen Janssen)
- win32 nsis installer script updates (Volker)
- small configure fixes for MacOS (Christophe)
- optimizations & compile fixes for MacOS/X (Daniel)
- configuration files. The following options have been deprecated :
diskc, diskd, cdromd, time0, pit, newharddrivesupport.
- documentation
- already ported and obsolete parts of the old documentation removed (Volker)
- user documentation updated and extended :
- improved section "What does Bochs need" (Volker)
- command line arguments (Volker)
- search order for the configuration file (Volker)
- the configuration interface 'textconfig' (Volker)
- FreeDOS Beta 8 installation instructions (Volker)
- disk modes (Christophe)
- LBA translation (Christophe)
- cdboot error codes (Christophe)
- SCO OpenServer install section (Carl Sopchak)
- MacOS-X DMG install guide (Aard Vark)
- update Win98 install guide (Dirk Thierbach)
- SF patches applied
#658950 Bug in FPU (Anonymous)
#678117 build fail due to bad SGML punctuation (Anonymous)
#671873 minimal USB support (UHCI) (Ben Lunt)
#682539 Fix CapsLock and NumLock behavior (rock at gimp.org)
#720776 REX MOVB immediate broken for x86_64 (Arnd Bergmann)
#729450 new keymap x11-pc-be.map (Wouter Verhelst)
#735990 Limited patches for VC++ (Anonymous)
#742670 fix library dependencies in GUI plugins (Robert Millan)
#742782 LFB bugfix (Jan L. Hauffa)
#748414 load32bitOShack bug (kyriazis at nvidia.com)
#830079 Fix bochs's application error if unsupported key pressed (Anonymous)
#724466 enable building with CC=gcc-3.2 CXX=g++-3.2; dist-clean adds(Leonard Norrgard)
#834962 Fixed drawing graphics is broken (Anonymous)
#838401 Fixed redrawing of ToolBar on Win32GUI (Anonymous)
#850236 Fixed accessing DVD-ROM with direct device access on Win32 (Anonymous)
#847822 Bochs crash when exmining memory that crosses page boundary (ortal at jungo.com)
- SF patches partially applied
#707931 Support EGA/VGA write mode 2 and others (Anonymous)
already applied: disable IME, split screen, write mode 2,
BIOS INT16h/AH=05h
#856506/#856510 Patch to fix compile-time iodev/cd-rom.cc error (alden.dima at nist.gov)
Correct patch provided in SF bug report #843433 (birkhofer at users.sourceforge.net)
- patches applied
- patch.highmem (memory allocation) (Zwane Mwaikambo)
- patch.floppy-160k-180k-320k-benlunt (exotic floppies) (Ben Lunt)
- patch.perf-regparm-cclark (performance) (Conn Clark)
- new patches present in the patches directory :
patch.pipelined-asm-cclark
patch.mingw-resources
patch.v8086-exception.lightcone
patch.pit-vitaly-vorobyov
patch.rombios-vitaly-vorobyov
patch.win32-vitaly-vorobyov
patch.win32-new-files-vitaly-vorobyov.tgz
patch.rombios.markevich
patch.rombios.dirk.thierbach
- these S.F. bugs were closed
#865354 ">>PANIC<< CRA: divider chain control 0x07" in Linux 1.1
#725796 configure script bug
#859768 cpuid
#863964 panic in duron 2000
#843433 cdrom.cc on MacOSX: wrong const names
#818493 EMU][ (DJGPP app running on FreeDOS) broken
#787005 Some MOV instructions are not implemented!!!
#840664 2200136693936p[CPU ] >>PANIC<< prefetch: RIP > CS.limit
#837416 V2 OS not compatible !?
#650917 Serial port broken under win95
#829863 Make bochs 2.0.2 build with gcc3
#816971 main.cc: getcwd() missing argument
#813556 Compile error under gcc 3.3.1
#809758 RIGHT ALT does not function properly
#809695 CVS complains about unknown files after compilation
#628762 Error in Floppy Booting
#474526 Crash under win32 (access violation)
#687619 test case for BX_CPU_C::IRET32
#664544 Panic in IRET32 - Reporting test case
#637822 test case for BX_CPU_C::IRET32
#603410 BX_CP U_C::IRET32
#537047 IRET32 incomplete emulation, panic
#805541 Compile fails on i686, gcc 3.3
#798829 Problem booting from ISO image
#688163 Panic at rombios.c
#688161 rombios.c crashes when boot from a CD.
#796339 int 15h, e801h broken?
#666946 Slowdown Timer should be a module
#783826 the clock is extremely fast
#645609 Real Time Clock is too *FAST*
#663320 flaw in IO bitmap permission handling
#764929 Timing is off.
#659510 Bochs timing off by x10
#787138 No ROM BIOS character map
#787134 Config options not saved
#689201 Disassembler bug
#666202 Windows 2000 - random screen blanking with linux DLX demo
#629242 reset during Doom -> BIOS panic
#695434 minix floppies won't boot.
#764473 Freesco Linux crashes on boot
#656026 error when trying to run some stuff
#614202 HD: non-byte IO read to 01f4
#777357 Strange FPU compiler error
#583758 gag bootloader doesn't run
#658639 ne2k panics with MS lanman Client/DOS62
#536711 problem running smart bootmanager
#741433 Disabling all ata# results in HD error.
#753200 lock instruction doesn't do an illegal instruction trap
#679389 libbx_wx.so.0: undefined symbol
#758936 Problem Installing Bochs
#742580 I configured fants but bochs still give me the same error
#772242 iodev/vga.cc wrong memory access.
#739222 Cannot change resultion
#693344 libwx_gtk2.3.so.2 RedHat linux 8.0
#639320 sparc: needs -lm to compile
#587422 Windows 95j doesn't boot
#547817 sparc: rfb needs -lsocket
#480963 RFB: option to wait for client
#763893 i've got problems with a "libvga.so.1" and another file
#766490 Documentation mistake
#766481 Bochs 2.0.2 Fails to compile on YDL3.0
#626144 %lld is not portable
#752241 lock prefix erronously allowed for some instructions
#743305 fetchdecode.c probs
#658707 Automatic exit?
#696758 BeOS can't mount image disk, won't complete boot.
#737048 Enabling keyboard resets controllers translation mode
#717713 Bochs panics on startup on RH 9
#741108 VGA PANIC
#730922 seg fault on "bochs boot: cdrom"
#658905 VGA read write error
#564218 Panic on vga_mem_write
#614231 X11 doesn't support charmap change
#708311 Missing CGA low-res emulation
#720776 REX MOVB immediate broken for x86_64
#643296 lock prefix, unallowed cases
#716964 [sb16] OPL.timer_running not initialized
#662074 little mistake in the default config example
#470701 CD-ROM on Win2K needs FILE_SHARE_READ
#706454 bug??
#653861 Win32 build bug
#421155 panic on vga read 0x3c7,0x3cb
#666434 VGA BIOS: Incompatible mode reporting
#681819 Incorrent return value from cdrom reads
#648222 Lotus Agenda futuristic dates off
#657455 doesn't boot plan9
#658938 SGDT in VM8086
-------------------------------------------------------------------------
Changes in 2.0.2 (January 21, 2003):
- fix possible segfault in wxWindows (Volker Ruppert)
- fix instrumentation (Stanislav Shwartsman)
- fix cdrom read_toc() function for *BSD (Keith Matthew Jones)
- fix NetBSD boot from cdrom (Christophe Bothamy)
- fix cmos checksum (Volker)
- fix "refresh bit" behaviour in pit (Volker)
- fix .bochsrc parsing (Volker)
- fix vga resize/redraw problems (Volker)
- fix compilation issues on Irix and Tru64 (Christophe)
- fix MMX/SSE bugs (Stanislav, Peter Tattam)
-------------------------------------------------------------------------
Changes in 2.0.1 (January 4, 2003):
- fix corrupt saved configuration files (Christophe Bothamy)
- fix missing break statements in apic (Shai Fultheim)
- fix compiling sb16 under FreeBSD (Volker Ruppert)
- updates to the documentation (Volker)
- fix text mode colors 8 to 15 (Volker)
- fix FPU integer load bug (Volker)
- stop pasting on hardware reset (Volker)
-------------------------------------------------------------------------
Changes in 2.0 (December 21, 2002):
Since the change log is hundreds of lines long, here is a very brief summary.
- 2x emulation speedup!!!
- added plugin devices and guis. Now you can compile with many more
options, and choose between them at runtime.
- added emulation of AMD x86-64, MMX, SSE, SSE2 instructions
- add wxWindows port (a graphical configuration interface and display lib)
and SVGAlib port (full screen display for Linux without X11)
- improvements in many I/O devices: for example up to 8 hard disks/cdroms,
TUN/TAP network interface, 360k floppies,
- improved MacOSX/Carbon interface and updated MacOS9 port
- GDB remote stub, allows symbolic debugging with Bochs simulation.
- support for up to 32gig hard disk images
Detailed change log follows.
- documentation
- manpages updated (Volker, Christophe)
- install HTML rendering of docbook documentation instead of
docs-html (Bryce)
- doc/docbook/Makefile is now generated by configure script.
if configure detects docbook2html on your system, it will turn on
--enable-docbook and run make in the doc/docbook directory. Also
make install will install documentation into $(docdir). You can use
--disable-docbook to turn this off, if necessary. (Bryce)
- add "make bochsdoc.tar.gz" target to create a documentation tarball.
If you do "make webinst" and you have write access on SF shell server,
it updates doc/docbook/* on the website (Bryce)
- user documentation additions:
- new options (Bryce, Volker, Christophe)
- Bios tips section (Christophe)
- Tuntap section (Christophe)
- Serial Port section (Christophe)
- "Will it Work for Me" / "Is Bochs Right for Me" sections
(N. David Guarneri)
- VESA section (Jeroen Janssen)
- several documents, previously existing as separate html files, have
been included :
- internal debugger section (Christophe)
- gdb stub debugger section (Christophe)
- WinME, WinNT, WinXP, The Hurd, Japanese Win95 install tips (Christophe)
- Win95, Win98 install tips (N. David)
- SB16 section (N. David)
- configure script/compile/porting to other OSes/installation
- added plugin architecture
- plugin code written by Bryce, Christophe, Volker based on
plex86's plugin code by Kevin. Testing help from Psyon and Br'fin.
- Plugins are shared libraries that can be loaded on demand. Example:
the serial device is implemented as a plugin. In UNIX, the
serial plugin is called libbx_serial.so. When Bochs reads its
configuration file, if the serial device is enabled it loads
libbx_serial.so.
- all display libraries, most I/O devices are converted to plugins now
- plugins supported on Linux, Solaris, and MacOS X using libtool,
Cygwin using dlltool. On MacOSX, you must have dlcompat installed
and in your include/library paths at configure time. (See .conf.macosx
for an example.)
- we use libtool's LTDL library from libtool 1.4.2, with a number of
critical bug fixes (Bryce Denney)
- the Linux binary RPMs are built with plugin support
- to compile with plugins, configure with --enable-plugins
- the LTDL_LIBRARY_PATH variable tells Bochs where its plugins can be
found. Bochs has a compile-time default for this variable which is
correct if you do a make install. You would only need to set the
variable if the default is wrong.
- for win32 plugins we added "BOCHSAPI" in front of many classes
and methods, to aid in building DLLs. This turns into __declspecs
which are used when making an export library for Bochs.
- allow many display libraries to be configured and compiled at
a time. For example --with-win32 --with-sdl --with-rfb.
Also, we added an experimental option --with-all-libs which
tries to detect which --with-* options will work. If the
autodetection fails, just type the --with-* options explicitly. (Bryce)
- add #if's around all files which are conditionally compiled such
as cdrom.cc and sb16.cc. This makes it possible to compile every
source file all the time, which has the potential to simplify the
configure script and makefiles. At present we only take advantage
of this capability in the win32 VC++ workspace. (Bryce)
- the MacOS9 port has been updated so that it works again. It had
not been updated in at least 2 years, maybe more. (Christophe Bothamy)
- improve support for FHS standard (Robert Millan, Volker Ruppert)
See patches 551811 and 650066.
- keep separate CFLAGS and CXXFLAGS for Bochs (usually a graphical
program) and console programs such as bximage and niclist. Some
sdl and wx compile flags were making bximage and niclist unusable.(Bryce)
- add concept of cross-configuring in the configure script. If you
use the --target option to generate makefiles to be used on another
machine, some detection of compilers and libraries is disabled. (Bryce)
- fix term compile on Cygwin, but it has to be done without -mno-cygwin,
which means that several win32 features such as networking do not work.
- add "-Wno-multichar" on beos
- test for largefile support, and add required CFLAGS (Bryce)
- add -lm when it's needed, and not when it's not (Bryce)
- add configure support for 8 processors. Bochs can support up to 15
with some work on the BIOS.
- fix nmake makefile generation (Psyon)
- improved pthread detection function from ac-archive project on SF
- add installer package for Windows, using Nullsoft (Michael Rich, Bryce)
- on MacOSX, add startup script that creates a text console and then
runs Bochs. Also add make target to create a DMG disk image (Br'fin)
- do not restart the font server on Unix/X11, if vga.pcf was already
installed. On several modern machines, if you restart the font
server the user has to restart X windows. (Bryce)
- update most .conf.* files with modern options such as
--enable-all-optimizations. (Bryce)
- The MacosX .conf script adds /sw/include and /sw/lib to the compile/link
path list because it is a common place to put dlcompat. Dlcompat is
required when building with plugins. (Bryce)
- rpms can now be built without root privileges (Bryce)
- command line
- fixed up our command line options (Volker, Bryce, Christophe)
Usage: bochs [flags] [bochsrc options]
-n no configuration file
-f configfile specify configuration file
-q quick start (skip configuration interface)
--help display this help and exit
- configuration file (bochsrc)
- There are several new options. See the documentation for more details.
- config_interface: select text mode menus or wxWindows for configuration
- display_library: select which display lib to use
- optromimage: load optional rom images
- ataN (N=0,1,2,3): up to 4 ATA controllers for hard disks, cdroms
- ataN-master, ataN-slave, N=0,1,2,3: defines a hard disk or cdrom.
The "ata*" options replace diskc, diskd, and cdromd, which are
now deprecated.
- floppy_bootsig_check: control the 0xaa55 signature check on boot floppies
- logprefix: lets you change the format of log messages
(patch by Carl Sopchak, help from Christophe)
- debugger_log: log all output from bochs debugger
- user_shortcut: allow you to type key combinations like Ctrl-Alt-Del
- pit: control the PIT model, including realtime option to try to
keep in sync with real time.
- Credits: Christophe added optromimage, everything about ATA,
floppy_bootsig_check, debugger_log. Bryce added config_interface
and display_library. Volker did the user_shortcut button.
Greg Alexander wrote the PIT model and added the realtime option.
- since v1.3 we've been able to use environment variables in pathnames
in the bochsrc file. Now, a few variables have default values, set at
compile time, that are used if the user does not set a value. If Bochs
is installed correctly, the defaults will be correct and the user will
not need to override them.
- $LTDL_LIBRARY_PATH is the path name where the plugins can be found.
The default value comes from $(plugdir) in the makefile. This is only
important if plugins are enabled. (Bryce)
- $BXSHARE is the path where the BIOSes and keymaps are installed.
The default value comes from $(sharedir) in the makefile. Disk
images on the Bochs website will begin to use BIOS pathnames like
$BXSHARE/BIOS-bios-latest. On win32, the $BXSHARE default is
set by the NSIS installer and read from the registry. On MacoSX,
the $BXSHARE default is set to the path containing bochs.app.
(Bryce, Volker, Br'fin)
- new option in the configuration interface to reset all bochsrc
settings to initial defaults. A reset occurs just before reading
a new configuration file, so that leftover parameters from a
previous configuration do not affect the new configuration. Also,
you can request a reset using the configuration interface. (Volker, Bryce)
- ne2k line can now specify a script to set up the interface (Christophe)
- on Unix, also search /etc/bochsrc (Bernhard Bablok)
- you can use #include in the bochsrc to read configuration from other
files (Volker)
- CPU
- speed optimizations from Kevin Lawton, yielding around 2x speedup
- guest2host_tlb : for entries in the paging TLB which point to normal
physical memory pages, a pointer to the host address of the emulated
physical memory (from malloc()) page is stored in the TLB entry. In
many cases, this pointer can be used in memory accesses to directly
read/write the guest memory address. In exceptional cases, the physical
memory access routines are used. Turn on with --enable-guest2host-tlb.
- repeat IO/string : for some variants of repeatable IO and string
instructions, the segmentation and paging checks are done in batch along
with the data transfers, constrained within page boundaries and the
segment limits. Turn on with --enable-repeat-speedups.
- icache : The structure holding instruction decode information was
reduced to 32 bytes. 24 bytes for the actual decode data, and 4 each
for pointers to the address resolution routine (not always needed) and
the instruction emulation routine. With a reasonably small
per-instruction decode size, an instruction cache (iCache) was created,
which is simply a hash table. The main cpu loop looks in the table
first; if the instruction has already been decoded, execution can begin
immediately without decoding. Turn on with --enable-icache.
- host specific asm : when compiling on an x86 platform, use of
x86-specific asms can be enabled to accelerate several facets of
emulating instructions. For example, the EFLAGS values are much more
efficient to calculate when the actual x86 instructions are used to
generate the EFLAGS values. Turn on with --enable-host-specific-asms.
(Kevin, with help from Jas Sandys-Lumsdaine)
- if you want to enable all the speed optimizations that we believe
to be stable, use --enable-all-optimizations. The release binaries
are built with this option.
- add support for AMD's x86-64 instruction set. To enable, configure with
--enable-x86-64. The AMD x86-64 support is about 90% complete and is
still experimental. We've implemented the core x86-64 instruction set and
the changes to the rest of Bochs necessary to operate in long mode, but
we've still to implement checking for canonical 64 bit addresses. The code
has been tested on a limited number of test programs. It has been able to
successfully boot a x86-64 Linux kernel and run a 64 bit userland
application. It has also successfully run a DOS based 64 bit protected
mode test application. (Peter Tattam, with merge/bugfix help from Kevin
Lawton and Bryce Denney)
- add MMX support. To enable, configure with --enable-mmx.
(Stanislav Shwartsman)
- add SSE and SSE2 support. To enable, configure with --enable-sse=1
or --enable-sse=2. (Stanislav)
- fixed the behaviour of the bcd instructions AAM, AAD and DAA based on
SF patch #537146 (Volker)
- stop printing an error for VERR/VERW. According to the i386 opcode
description there is no error present. (Volker)
- fix bug [ 625878 ] reset doesn't reset something(?). Fix cpu reset
when executing a rep instruction (Christophe)
- use accessors methods for CFLAGS and several other registers, so that
the implementation can be changed transparently later (Bryce, Stanislav)
- add support for page size extensions, also known as 4meg pages.
Turn on with --enable-4meg-pages. (Kevin Lawton)
- add support for page global extensions. Turn on with
--enable-global-pages. (Kevin)
- add support for physical address extensions. Turn on with --enable-pae.
(Peter Tattam)
- implement RDMSR and WRMSR. not all MSRs are supported (Zwane Mwaikambo)
- new configure option --enable-ignore-bad-msr, which makes unrecognized
MSR reads and writes into just a warning
- fix PIC/APIC interrupt problem that caused Linux 2.4.19 to hang
during boot (Peter)
- CMPXCHG8B patch (Michael Hohmuth)
- EFLAGS are now stored in the same form as the native EFLAGS on an x86,
so that we can use native machine instructions in some cases (Kevin)
- instrumentation code updated (Stanislav)
- FPU
- fixed bug [ 452275 ] fprem emulation bug (Volker)
- fixed bug [ 648579 ] Mac OSX >>PANIC<< FPU_printall. There was an
endianness issue with the fpu (Christophe)
- I/O devices
- rewrote pc_system timers (Kevin)
- biosdev
- this new device handles the panic/error/info/debug messages sent
by the Bios and VGABios. It was previously done in the unmapped device.
- cdrom
- implementation of the function READ TOC for cdrom image files. (Volker)
- function capacity() for win32 fixed. Now it returns the number of blocks
instead of bytes. (Volker)
- added multiple cdrom support for win32 (NT/2000 version untested). The
ASPI version uses the cdrom drives in the system's order. Drive letters
are not used by ASPI. (Volker)
- fix configure script's cdrom detection on BeOS (Bryce)
- fix physical CD change at runtime (Bryce)
- cmos
- fix panic when WinXP read port 70h (Christophe)
- add ps/2 style century at index 37 to allow WinXP to boot. (Bryce)
- dma
- DMA register and unregister functions for DMA channels added and macros
for DMA functions defined. The changes are based on the Plex86 functions.
(Volker)
- implementation of the DMA controller reset (Volker)
- the value of the command register must be always 0x00 (BX_ERROR fixed)
- floppy (Volker)
- implemented Tape Drive Register (Dave Poirier)
- added support for 360k floppy images
- the skip flag (SK) in command 'read sector' is ignored now
- floppy read and write function do not set the 'seek end' bit in status
register 0 (fixes SF bug #553377)
- the status of the 'disk changed' line depends on the selected drive.
The digital input register is now an array (DIR[4]).
- apply patch [ 635021 ] floppy cleanup by Alex Thiel
- distinguish between floppy drive type and media type
- hard drive
- add largefiles support, to allow disk images larger than 2gig.
(Stu Grossman)
- missing conditions for lower_irq() added (Volker)
- several noncritical panics replaced with BX_ERRORS and the controller
returns an error code until we implement the features (Volker)
- applied patch from Carl Sopchak for booting sco openserver
- allow disk block access only if concatenated images are not used
(Christophe)
- fix bug [ 419415 ] netbsd 1.5 rescue disk won't boot (Volker)
- multiple drq atapi data transfers corruption fixed (Christophe)
- added some commands to the unsupported "Set Feature" commands (Christophe)
- speedups in repeated IO transfers (Kevin)
- support for Peter Tattam's external disk simulator (Bryce)
- 4 channels / 8 devices support (Christophe)
- "inquiry" atapi command results corrected (Volker)
- check for incomplete devices configuration before starting the
simulation (Bryce)
- implemented the different bios disk translation schemes (Christophe)
- keyboard and mouse
- add commands 0xd2, 0xdd and 0xdf (Dave)
- fix bug [ 613975 ] wxWindows: params redefined on restart (Bryce)
- in function mouse_motion(): added parentheses to fix compilation problems
with MSVC. See SF bug #575301. (Volker)
- added missing register_irq() for the PS/2 mouse IRQ12 (Volker)
- fix "AltGr" key on European keyboards wxWindows/win32, SDL (Volker)
- NE2000
- function reset() clears the IRQ line (Volker)
- added TUN/TAP interface (Renzo Davoli, Christophe)
- fix DOS based packet drivers that use an odd count for the NE2000 DMA (Peter)
- changed "TCR write, reserved bits set" panic into an error, fixes
networking with debian image (Bryce)
- parallel
- parport1 enable/disable support added (Volker)
- PCI (Volker)
- implementation of the PCI device register mechanism
- PCI memory handling moved to the memory code
- replaced memcpy() in pci_read() by a more portable code. Problems with
PCI on big-endian machines are fixed now (SF bug #638481).
- implementation of the PCI-to-ISA bridge started (still incomplete)
- PIC
- fixed detection of single mode and level senistive mode in ICW1 (Volker)
- fixed handling of rotate_on_autoeoi for master PIC (Volker)
- irq mask is now cleared on initialization (Dave)
- fixed lockup during mouse movements during win98 install. (patch from
Wilfried Weissmann)
- PIT
- Added realtime PIT support (Greg)
- Sound Blaster 16
- it used to enable itself all the time; now only when you ask
- fix memory leaks (Bryce)
- serial
- don't cause problems when serial device is disabled (Volker)
- unmapped
- add programmatic shutdown feature at port 0x8900 (Christophe)
- vga
- VBE fixes (Jeroen, Volker)
- CRTC fixes (Volker)
- sequencer reset with bits 'reset1' and 'reset2' implemented (Volker)
- add charmap change support (used by SDL, win32 and wxWindows gui) (Volker)
- screen dimensions / updates for some graphics and text modes fixed (Volker)
- use the start address when calculating the byte offset for standard
EGA/VGA modes (Volker)
- byte offset for modeX fixed (use value of CRT register 0x13) (Volker)
- text mode memory mappings 0 and 1 support (Christophe)
- fix bug [ 612741 ] VBE mem conflicts w/ local APIC address (Jeroen)
- fix bug #635223: VGA tiles array access out of bounds (Bryce)
- ROM BIOS
- improve compile process. Now bioses for 1, 2, 4 and 8 processors
are built at the same time (Bryce)
- fixes to be able to compile the bios with gcc2 or gcc3 (Jeroen and
Christophe)
- changes on boot signature check (Christophe):
- never done for cdroms
- always done for hard-disks
- conditional for floppies
- add keyboard int16 functions 0x09 (get keyboard functionality) and
0x0a (get keyboard id) (Christophe)
- fix bug [ 629810 ] int 16/ah=01 broken? Enable interrupt on entering
int16 handler (Christophe)
- new keyboard init in POST (patch from Adam Sulmicki)
- flush input and output keyboard buffer before keyboard self test
(Volker and Christophe)
- fix bug [ 547603 ] kbd up/down arrows in dos install (Christophe)
- fix bug [ 549815 ] bios wrongly loads CS,ES. CS and ES are set to 0
before the bootloader code is called. (Christophe)
- PCI functions support (Volker) :
- BIOS32 service directory
- real mode PCI int1a functions
- protected mode PCI int1a functions
- fix reset for MS-DOS and Win95 (Volker)
- 360K floppy support (Volker)
- enhanced ata/atapi support (Christophe) :
- 4 channels / 8 devices
- device auto detection (with help from Adam Sulmicki)
- EDD3.0
- 32bits device access
- optional disk translation "large", "r-echs" or "lba" (up to 8.4GiB)
- re-enable harddisk controller interrupt after reads/writes.
Win95 can now use native access to harddisks and cdroms. (Volker)
- shutdown status handling (cmos index 0x0f) (Christophe) :
- fix bug [ 601166 ] CMOS Problem @ "0x0F Index 0x05 data". After reset
execution will resume by a jump to [0x40:0x67] if the shutdown status
is 5
- the bios don't panic any more if the shutdown status is 9
- two parallel ports detection in POST (Volker)
- two serial ports detection in POST (Volker)
- add int15 extended memory function 0xe820 (patch from osmaker) and
0xe801 (patch from Hartmut Birr)
- fix return values on some int15 functions (Bryce)
- fix int70 handler overlapping int08 handler (Christophe)
- simplify 8 processors BIOS for operating systems which don't do
paranoia/sanity checks (Zwane)
- configuration interface
- wxWindows config interface now allows you to change every bochsrc
option using menus and dialog boxes. There is also the beginning of
a wxWindows graphical debugger, but it needs a lot of work before it
will be useful.
- renamed control.cc to textconfig.cc. Now we're calling it a
text configuration interface, instead of a control panel.
- display libraries
- Even though we've had them for years, the term "display library" is new in
release 2.0. In the gui directory, Bochs has a number of different C++
files which you can select to display the text and graphics on the
simulated monitor. Each of these is a display library. The display
libraries are:
x use X windows interface, cross platform
win32 use native win32 libraries
carbon use Carbon library (for MacOS X)
beos use native BeOS libraries
macintosh use MacOS pre-10
amigaos use native AmigaOS libraries
sdl use SDL library, cross platform
svga use SVGALIB library for Linux, allows graphics without X
term text only, uses curses/ncurses library, cross platform
rfb provides an interface to AT&T's VNC viewer, cross platform
wx use wxWindows library, cross platform
nogui no display at all
- it is now possible to compile Bochs with support for many different
display libraries and select the one to use at runtime (even without
plugins). See the display_library directive in .bochsrc.
- add new svgalib display library by Igor Popik
- fix bug [ 614724 ] SDL can get stuck in full screen mode
display libraries such as SDL which have a full screen mode can be
dangerous, if Bochs does not switch back to normal display mode at
the right time. This is fixed for SDL and the new svga.
- keymap support added in SDL interface (Bryce, Volker)
- new keymap files: SDL keymaps for US and DE keyboards, X11 keymap
for Danish keyboard.
- use keyboard mapping for keyup messages too
- renamed almost all references to data type "Boolean" to "bx_bool".
The Boolean data type was defined in Carbon.h headers, and conflicted
with Bochs's definition. See bug [ 618388 ] Unable to boot under MacOS X
Exceptions: When talking to the Carbon library, you must use Boolean.
Also, siminterface.h uses standard "bool" instead of bx_bool.
- "User" button added in toolbar. It can send keyboard shortcuts to
the guest OS. (Volker)
- snapshot improvement and memory leak fixed (Volker)
- testing framework, based on comparing screen content, added (Greg)
- term display library:
- support for color terminal, function keys, clear screen (Volker)
- solaris compilation problem (bug #613393) fixed (Bryce)
- win32 display library:
- use native win32 toolbar for headerbar, use system palette (Volker)
- many Carbon interface improvements:
- patch [ 549248 ] Fix Carbon key & menu handling (Chris Thomas)
- partial keymap support, copy&paste, menu items fixed, new toolbar
behavior, dialog box display for panics (Br'fin)
- sdl display library:
- keyboard fixes and key mapping added (Bryce)
- when captured, the mouse is forced to stay in the window. fix bug
[ 619283 ] SDL: os mouse pointer leaves the window (Bryce)
- x display library:
- bug [ #537593 ] vga font not being found fixed. If vga font not
found, search for a font called "-*-vga-*" (Bryce)
- keyboard problems fixed (Bryce, Christophe)
- beos platform, any display library: add a nice icon to the executable
(Bernd Korz)
- wxWindows
- wxWindows is a cross-platform C++ user interface library which you can
download for free at http://wxwindows.org. wxWindows provides C++
classes for all sorts of GUI controls (buttons, menubars, etc.) and
implements all of them using the native controls on the platform.
- The new wxWindows port of Bochs provides both a graphical configuration
interface (for editing bochsrc options) and a display. It was
written by Bryce Denney, Don Becker, Dave Poirier, and Volker Ruppert.
- In release 2.0, we concentrated on making the wxWindows port as stable
and functional as the other interfaces. wxWindows provides a great
toolbox that we can use to make Bochs easier to learn and use.
- wxWindows supports charmap changes, keyboard mapping, cut and paste,
text and graphics modes, text mode cursor size, and mouse (Volker, Bryce)
- To compile Bochs with wxWindows, you should install wxWindows 2.3.3
or later. Then configure Bochs with --with-wx.
- if you have multiple versions of wxWindows installed (e.g. a debug
and a release version), you can set $WX_CONFIG before configuring
to select between them. (Bryce)
- Bochs debugger
- [ 609616 ] remote GDB stub
add GDB Stub support from Johan Rydberg, with bug fixes by Stu Grossman
- add hooks for external debugger for win32. The external debugger
that connects to Bochs is distributed in
build/win32/tattam-external-debugger.zip in binary form. Turn on
with --enable-external-debugger. (Peter)
- add "debugger_log" option to bochsrc, which logs all debug output
into a file. feature [ 629068 ] (Christophe)
- debugger is now usable in fullscreen SDL and SVGA guis. It will
switch back to text mode for each debug prompt (Bryce)
- disassembly output cleaned up and improved
(Kernel Panic, Peter Tattam, Jonathan Shapiro, Luiz Henrique Shigunov)
- fix [ 628806 ] debug: x/c prints unprintable chars (Bryce)
- add the beginnings of a wxWindows debugger. Not ready for mainstream use
yet. CPU register display is implemented, and you can type any debugger
command you want into the Debug Console window. (Bryce)
- add help command (Alexander Krisak)
- symbol table lookups cleaned up a bit (Bryce)
- displays the address of the caught watchpoint, feature #435271 (Dave)
- remove obsolete "loader"
- utilities
- fixed bug [ 487758 ] bximage fails on file creation >2048meg
Bximage should now work up to 32gig. (Bryce)
- on win32, both bximage and niclist now ask the user to press
return before exiting, so that you have time to read the results
before the window disappears. (Bryce)
-------------------------------------------------------------------------
Changes in 1.4.1 (June 22, 2002):
- now cdrom is enabled in configure, unless you specifically disable
it with --disable-cdrom. (Christophe)
- fix compile error in main.cc when SMP or APIC is enabled (Dave)
- the runtime menu now displays 11 (continue) by default (Bryce)
- initialize DMA controller before floppy and SB16
- fix DMA panic when installing win95 (Volker)
- first character of the vga bitmap is blank on win32 (Volker)
Before, it was incorrectly coded as a '@'.
- AltGr key on European keyboards works now on win32 (Volker)
- fix problem with console/serial port on Bochs exit (Volker)
- enable serial port for GNU and GNU/Linux (Volker)
- small documentation fixes (Volker)
- remove unnecessary include statements for X11 (Volker)
- italian keymap added (Emanuele Goldoni)
- fix win32 ethernet frames error. It will no longer reject packets
that are less than 60 bytes long. (Peter Tattam)
- BIOS fixes :
- win2k cd-boot (Christophe)
- emm386 crash (Dave)
- cs=0 at boot time (Christophe)
- keyboard failure in scandisk (Dave)
- fix bug in forming the 64-bit APIC base address from two 32-bit registers.
A compiler warning in cpu/proc_ctrl.cc pointed this out.
- fix default choice in the runtime options menu
-------------------------------------------------------------------------
Changes in 1.4 (March 27, 2002):
- ROM BIOS
- Boot from CDROM! Christophe Bothamy added partial El Torito support in
rombios.c, which allows Bochs to boot cdroms. Booting from win2k or winXP
cdrom is not supported yet. The default BIOS includes El Torito functions.
the boot line must say "cdrom".
Example:
boot: cdrom
- implementation of int13 diskette function 5 (format track) (Volker)
- initialisation of PIC and DMA-2 added to POST code (Volker)
- configure script (Bryce Denney)
- the configure script now detects your platform and provides a default
GUI and the required compiler flags. All supported platforms should
compile with simply "configure" and "make".
- default guis by platform:
- win32/windows/cygwin: win32 gui
- MacOS X: carbon gui
- MacOS 9 or earlier: macos gui
- BeOS: beos gui
- AmigaOS: amigaos gui
- all other platforms: X windows gui
- compile arguments supplied by configure script
- win32: too many to list here; see documentation
- cygwin: -mno-cygwin -DWIN32
- MacOS X: -fpascal-strings -fno-common -arch ppc -Wno-four-char-constants
-Wno-unknown-pragmas -Dmacintosh
- the --with-GUINAME configure option is only needed if you want to override
the default GUI. This is the only way to use the Term, RFB, and SDL
GUIs.
- VGA
- added VESA BIOS Extensions code by Jeroen Janssen (banked mode only, LFB
support in patches)
- vga memory read/write functions in text mode fixed
- implementation of CGA mode 320*200*4 (patch from Sebastien Bechet)
- VGA BIOS
- updated Christophe Bothamy's LGPL VGA BIOS to version 0.3a. This consists
of a bug fix for function ah=13 and VBE support by Jeroen Janssen.
- networking
- chipmem read/write limit fixed (Mike Lerwill)
- writing a byte in 16-bit mode now possible (Mike Lerwill)
- new ethertap interface for Linux, which allows Bochs to talk to
the local machine and the internet (Bryce Denney)
- NE2000 is now enabled by default on Win32, Cygwin, and Linux compiles
in the .conf.* scripts and release binaries.
- fix check for auto transmit disable, which was checking the wrong bit
(Peter Tattam)
- Win32 only
- niclist.exe has been revised to work on more Windows versions, and it
suggests a usable ne2k line (Dean Payne)
- fix timeout setting so that ne2000 does not slow down the whole
simulation (Don Becker)
- bug fix: be able to handle multiple packets that arrive at once
(Mike Lerwill)
- GUI changes
- cdrom button: click this to notify Bochs when you changed the CDROM (Volker)
- snapshot button: saves the text on the Bochs screen into a file called
snapshot.txt (Volker)
- copy button: on Win32 and X windows, copy the text on the Bochs screen
to the clipboard (Volker)
- paste button: on Win32 and X windows, paste the characters on the
clipboard into the Bochs window. This requires keyboard_mapping to
be enabled. (Bryce Denney)
- improved text mode cursor for Win32, X11, and SDL (Volker)
- new SDL interface (Dave Poirier, debugging by Christophe, Volker, Bryce)
SDL is a graphics library that has works on many platforms. This interface
is experimental, and is missing a few features of the standard Bochs
interfaces: extended keys (arrows, keypad).
- MacOS X: add MacOS X carbonized event handlers by Jeremy Parsons
- X windows: when not enough colors can be allocated, force use of
private colormap (Bryce Denney)
- bug #490570 fixed: OUTB set and command 0xaa encountered (Dave Poirier)
- keyboard
- completed keyboard emulation with the implementation of the three scancodes
sets (mf1, mf2, mf3) with or without translation. This is based on Ludovic
Lange's plex86 keyboard patch. (Christophe Bothamy)
- added a "keyboard_type" option, that defines the answer to an "identify
keybord" request to the keyboard controller. The available values are
"xt","at","mf". (Christophe Bothamy)
- added an optional keyboard_mapping option that enables to use your
country specific keyboard with Bochs. If enabled, the keymap file must be
specified in bochsrc. The available keymaps are US, German, Spanish and
French for PCs running X11. Contributions are welcomed. (Christophe
Bothamy)
- added Windows(tm) key definitions (Volker Ruppert)
- added paste button, which causes the emulated keyboard to type characters
from the system clipboard. This only works when keyboard_mapping is
enabled. (Bryce Denney)
- cdrom
- bug fix: win32 could not read a cdrom image file
- eject cd support for linux (patch from Petr Stehlik)
- BeOS fixes
- changing cdrom media is possible now with CDROM button
- sound blaster(tm) emulation (Volker)
- you can use --enable-sb16=freebsd now
- 16-bit DMA controller added
- 16-bit mode of the SB16 implemented (output to file works)
- floppy drive (Volker Ruppert)
- implementation of the floppy command 'format track'
- implementation of read / write operations with MT=0
- behaviour of a few floppy commands fixed
- floppy reset behaviour fixed
- lots of other fixes
- fixed bug [ #468340 ] pic:slave: OCW3 not implemented. Now the slave PIC
supports all the modes that the master PIC does, and nobody will see this
message again.
- serial port (by Volker Ruppert unless noted)
- improved IRQ handling
- now Windows 95 serial driver works correctly
- fixed the return value of the MCR (loopback bit)
- interrupt reasons LSR change and MSR change implemented
- the number of data bits is considered when sending data
- all serial port changes are tested in loopback mode only
- serial port emulation fixed for FreeBSD and OpenBSD (Stu Grossman)
- fix receiver poll frequency so that it doesn't slow emulation (Stu Grossman)
- Bochs debugger
- when tracing, print the instruction just before it is executed, instead
of just after (Greg Alexander)
- after a triple-fault panic, you can now return to the debugger
- symmetric multiprocessor (SMP) simulation
- no more panic if you read the EOI register
- fixed default destination format in local APIC
- fix SMP instruction tracing in bochs debugger
- fix deadlock when debugger enabled and all processors HLT
- MSR support added by Zwane Mwaikambo
- simulation of interrupts is more accurate (Volker)
- implemented edge triggered interrupt mode
- added functions raise_irq() and lower_irq()
- programmable interrupt timer (Greg Alexander)
- fixed the PIT gate and improved the PIT printing options
- experimental real-time PIT
- parallel port improvements (Volker Ruppert)
- bug fix: hard disk errors caused by overflowing imul in the BIOS code.
Sebastian Bechet and Peter Tattam tracked it down and fixed it.
- fix some memory leaks (patch from Darko Tominac)
- Double-Word IO is supported for ATA devices
- fix bash-specific syntax in install-x11-fonts script
- print stack_return_from_v86 error only the first 100 times
-------------------------------------------------------------------------
Changes in 1.3 (December 10, 2001):
- networking works on Windows and Linux platforms
- emulated cdrom can now read from ISO image files, on any platform.
- new PIT model by Greg Alexander which is much more complete than the
old one. The new PIT is used by default, but you can switch back to
the old one if you configure with --disable-new-pit.
(PIT = 8254 programmable interrupt timer)
- new configuration menus by Bryce Denney, which allow you to change any
bochsrc option using text menus, then save the configuration into
a new bochsrc file for later use. You can disable the new code using
configure --disable-control-panel. Also you can use the command
line arguments -nocp or -nocontrolpanel. Also, there is a new
"Config" button on the GUI that allows limited changes to the
configuration at runtime, such as changing the floppy disk.
- add docbook documentation directory in the sources under doc/docbook.
The transition from HTML to docbook documentation is still in progress.
- Add new log action "ask", as shown in these example bochsrc lines:
panic: action=ask
error: action=ask
When an event occurs which is set to "ask", you get a beep and message
on the text terminal that asks what you want to do. Choices are: continue,
continue and disable future messages from this device, quit immediately,
or segfault (where abort() function is available). If compiled with
--enable-debugger, you can also choose to enter the debugger.
- Parallel port emulation cleaned up by Volker Ruppert. See .bochsrc for
syntax of new parport1 line in bochsrc.
- PCI support improved by Volker Ruppert, including BIOS changes. Still
not complete.
- floppy controller returns a proper error response if you try to write
a read-only disk image. For systems such as DOS that actually use the BIOS
services, it was also necessary to add code in int13_diskette_function to
recognize a write-protected error and return the correct error status code
(AH=3, Carry Set).
- the ROM BIOS now prints panic messages to the console. Thanks to Cliff
Hones for his console display code.
- the ROM BIOS detects nonbootable disks (Barry Allard), and prints a message
on the console. Barry Allard's patch who helped with checking the boot
signature.
- LBA support added for hard disks. (Not tested very much.)
- add dependencies to makefiles
- logging code moved into a separate file, logio.cc
- new option --enable-slowdown-timer, by Greg Alexander, which kicks in if
Bochs simulation time starts to run faster than real time. This helps to
keep the Bochs clock in sync with the real clock when the CPU is mostly
idle.
- new option --enable-iodebug, by Dave Poirier, which creates an I/O
interface to the debugger. This lets you write software to be emulated
in Bochs which can turn on instruction, register, or memory tracing
using I/O accesses.
- improved detection of readline in configure script
- configure substitutes the version number into many files, instead of
using sed in the makefile. There are still a few uses of sed remaining.
- you can now use environment variables in bochsrc values. For example,
diskd: file="$BOCHS_IMG/diskd.img", cyl=615, heads=6, spt=17
- configure with --prefix=PATH works now
- running configure from a different directory works now, thanks to
a patch from Edouard G. Parmelan
- fix [ #433759 ] virtual address checks can overflow.
> Bochs has been crashing in some cases when you try to access data which
> overlaps the segment limit, when the segment limit is near the 32-bit
> boundary. The example that came up a few times is reading/writing 4 bytes
> starting at 0xffffffff when the segment limit was 0xffffffff. The
> condition used to compare offset+length-1 with the limit, but
> offset+length-1 was overflowing so the comparison went wrong.
- cmpxchg8b patch from Michael Hohmuth <hohmuth@innocent.com>
- apply patch from Thomas Fitzsimmons <fitzsim@cygnus.com> to fix compile
problems when BX_SUPPORT_PAGING and BX_USE_TLB are turned off
- fix bug introduced in 1.2.1 which caused spurious exceptions.
See patch #439314, Exception 1 (debug) on HALT, from
thomas.petazzoni@meridon.com.
- add panic in ctrl_xfer32.cc where the IRET32 implementation is broken.
This only happens if you are NOT in vm8086 mode or protected mode.
The intent is to warn people when they are getting bad emulation, and
encourage people to report how they got to that point.
- apply patch from Santiago Bazerque. See this bug report:
[ #463018 ] retf not removing parameters sometimes
- fix bug [ #461730 ] IRETD causes problems if NT-flag is set
reported by Peter Lammich.
- apply patch [ #455014 ] CR0 bug in 80486, described as:
> In the register CR0, when the bit PM is enabled, the bit 4 is 0
> when should be 1.
- apply patch from Mike Rieker <mrieker@o3one.org> associated with this bug
report: [ #480422 ] gdt 'accessed' bit
- in task_switch when it tried to ensure that the old TSS was paged in,
it actually used the new TSS address, fixed.
- updated the instrumentation code, and added a working example. To try
it, configure --enable-instrumentation=instrument/example1. Then when
you run bochs, you will get one line for each instruction PC and for
each I/O access in a new file called bxevent.txt.
- set a bit in the CMOS that says the processor has an FPU. This is
from patch [ #455006 ] Device byte is not initialized aptly.
Author did not leave their name.
- add logging code to the "null ethernet" which does not require host OS
support. All this does is print the outgoing packets from the guest OS.
- cleanup of log functions (Todd Fries)
- add BX_ERROR for every command in ATAPI-6 that bochs does not support.
I still need to do add some commands from older specs that are obsolete
(and not listed) in ATAPI-6. Commands that aren't in the spec will still
panic.
- only put 0xf into the 2nd hard disk field when the cdrom is not present.
This is a patch from Volker Ruppert <Volker.Ruppert@t-online.de>, who
comments: "The fdisk command reports an unusable second harddisk if the cdrom
is enabled. This patch helps, but I don't know if it is the right way."
- make hard disk code return error codes when data is not available instead
of just panicing. In particular, if the logical sector is out of bounds
or the disk image cannot be read/written at the desired offset, we now
abort the ATA command and return an error code. Many of the old BX_PANIC
messages are turned to BX_ERROR, so they will still appear in the
log, but now the device model will try to communicate this fact to
the OS instead of simply giving up.
- don't blindly reject odd length atapi commands. There are cases when
it's really ok according to ATA-4.
- for big endian machines, reversed the bit fields in interrupt_reason.
This was pointed out by Nicholai Benalal.
- extended keyboard improvements by Dave Poirier
- major mouse patch from Dave Spring, that implements several missing
mouse modes.
- commit keyboard patch from David Haslam <dch@sirius.clara.co.uk>
posted to mailing list, that addresses the problem of each key press
printing ^@. See cvs log for details.
- mouse performance fixes by Greg Alexander and Robb Main
- NE2000 fixes by Frode Vatvedt Fjeld, ecelca@yahoo.com, Greg Alexander,
and angelos@openbsd.org.
- fix bug [ #468340 ] pic:slave: OCW3 not implemented. Some event handling
code appeared in the master pic but not the slave pic.
- fix compile problems in SB16 code, related to fpos_t being treated as
an integer.
- patch from Volker Ruppert <Volker.Ruppert@t-online.de> to fix
midi output file so that winamp can play it.
- some cleanup of serial code by Todd Fries and Volker Ruppert, but it
doesn't work yet.
X Windows specific:
- commit patch from David Haslam <dch@sirius.clara.co.uk>
[ #455763 ] Cursor trail with DOS Edit/Minix vi
- error for missing fonts now points to the documentation
- new option --enable-idle-hack, by Roland Mainz, which makes Bochs more
friendly toward other processes when its CPU is idle. Presently,
this option is specific to X windows.
Win32 specific:
- now Windows 95/98/ME can read the physical cdrom (Don Becker)
- The default configuration for Win32 VC++, given in .conf.win32-vcpp,
now enables the NE2000 and renames all .cc files to .cpp. This keeps VC++
happy but may make it hard to use CVS.
- The default configuration for Cygwin, given in .conf.win32-cygwin, now
enables cdrom and SB16.
- See "new docs" on the web site for compile instructions for VC++ and Cygwin.
- The sources include a VC++ workspace, in addition to the old "nmake"
makefile.
- ethernet support (emulated NE2000 card), coded by Don Becker. This
implementation requires a library called WinPCap, which you can
download from http://netgroup-serv.polito.it/winpcap.
- new utility called niclist.exe which lists the ID number of all your network
cards (well probably you just have one). The ID be used when setting up your
.bochsrc.
- patch [ #466403 ] make text colors more accurate. The author did not leave
his/her name.
- fix GUI bug [ #452159 ] win32: mouse stuck if bochs win partly off screen
Now we center the mouse periodically, whether or not the mouse has
wandered outside of the window or not.
- event handler recognizes the extended keycode flag
- fixes for raw floppy and floppy disk images (Don Becker)
Linux specific:
- Ethernet (emulated NE2000 card) now works in Linux! Contributed by
splite@purdue.edu. This has been tested using host OS kernel 2.2.14, and
works with telnet, ftp, irc, lynx, etc. Because it is a packet filter
solution, you aren't able to talk to the host machine, only to other
machines on the network.
- The default configuration for Linux, given in .conf.linux, now enables
the NE2000 model.
- RPM build process configures with --prefix=/usr so that everything is
installed in /usr/bochs instead of /usr/local/bochs.
- DLX Linux disk image is now installed so that only root can write it, to
avoid security problems. When you run the bochs-dlx script, it creates a
local copy in your home directory and then runs it.
- code that determines the capacity of a cdrom now works for both ATAPI
and SCSI drives (splite@purdue.edu)
- applied patch from bochs@sigint.cs.purdue.edu. The comments are:
> The Linux 2.4.5 CD-ROM driver sends a READ_DISC_INFO command which caused
> an "unrecognized ATAPI command" panic. Looks like READ_DISC_INFO is only
> recognized by CD-R and CD-RW drives, so I ignore it for now.
Amiga MorphOS specific:
- Bochs now compiles and works on Amiga MorphOS. Configure with
--with-amigaos. For AmigaOS only, see .bochsrc for use of fullscreeen and
screenmode options. The Amiga MorphsOS is written and maintained by
Nicholai Benalal <nicholai@chello.se>.
- raw cdrom supported if you configure with --enable-cdrom
BeOS specific:
- Bochs compiles and works on BeOS. Configure with --with-beos.
Bernd Thorsten Korz <bernd.korz@insidebeos.de> maintains the BeOS port.
- raw cdrom supported if you configure with --enable-cdrom
MacOS X specific:
- Bochs now compiles and works on MacOS X. Configure with --with-carbon.
Emmanuel Mailliard <e.rsz@libertysurf.fr> ported the Macintosh code to the
Carbon API.
- The MacOS X application is built using (gasp) mkdir, copy, and rez.
Surely this is not the right way, but it works.
- raw cdrom supported if you configure with --enable-cdrom
RFB mode:
- apply patch.rfb-mouse by MURANAKA Masaki (monaka@users.sf.net)
see this source forge bug [ #457968 ] Strange mouse motion on RFB
- add a retry loop in RFB code, so that if port 5900 is not available
it can try 5901, etc.
Bochs Debugger:
- do a vga update whenever you print a debugger prompt.
- added debugger command "info fpu" that prints the FPU registers. If you
do "info all" you get cpu and fpu registers.
- added debugger command "info ne2k" which prints all the registers
of the NE2000 model
- add ability to do register tracing and flag tracing (Dave Poirier).
Try the trace-reg-on and trace-reg-off commands.
- instruction trace now includes time ticks
- fixed problems in which bochs compiled with debugger measured time
differently from bochs compiled without debugger. Also when instruction
trace was enabled, breakpoints and control-C did not work. Also,
breakpoints at the beginning of an interrupt handler did not work.
-------------------------------------------------------------------------
Changes in 1.2.1 (June 12, 2001):
- more work on makefile for building RPMs
- [ #432382 ] build debian packages patch
add build/debian directory from Rob Lemley <rjlemley@calypsoblue.org>
which allows us to make Debian packages!
- optimize for speed when simulating one processor. Now 1-processor
performance should be equivalent to 1.1.2.
- [ #425640 ] sb16 assumes fpos_t is long int
This fixes compiles of iodev/sb16.cc on linux systems with newer libraries
in which fpos_t is not an integer.
- [ #432488 ] SMP:assert "n_logfn < MAX_LOGFNS" fails
increase MAX_LOGFNS since we ran out of them on an SMP simulation with
4 processors
- changes to compile clean on cygwin:
- don't use the WIN32 snprintf define for cygwin
- add ssize_t definition for cygwin
- only compile "struct timeval tval" if select is available
on that platform.
- [ #432491 ] SMP: CPUID says no APIC feature
clean up inconsistent use of BX_SUPPORT_APIC and BX_APIC_SUPPORT, which
caused the CPUID to report no APIC was present
- [ #431025 ] --enable-external-device-models broken
removed configure options for external-device-models and
external-cpu-memory. These don't work and aren't going to be fixed.
- [ #429448 ] configure: -lreadline when not there
Now configure allows you to choose not to use readline, even if it's found
on your system.
- [ #428915 ] apply extended keyboard patch
extended keyboard patch by Dave Poirier <eks@void-core.2y.net>
- [ #428626 ] if no X11 found, configure&make fails
Now configure halts if X windows is selected but no X libraries are found.
- updated rombios to version 1.13. This fixes several problems:
- [ #430472 ] DOS HIMEM "A20 line" error
This problem was apparantly caused when Bryce added a function that prints
the BIOS version, and he called it too early in the boot process. Now the
same function is called later, and it doesn't break the A20.
- [ #431010 ] SMP structure overwritten in v1.2
SMP structures were getting overwritten by BCC-generated data,
preventing SMP operating systems from detecting that other processors
were available.
- [ #431016 ] bios: SMP struct has wrong entry count
SMP structure had the wrong entry counts
- very minor doc updates (typos, replace broken link to mtools info)
- quit when the user clicks the power button, even if they have disabled
panics.
- win32 now defaults to having mouse capture mode turned off. For new users,
it would be distressing for their mouse cursor to disappear until they
pressed F12.
- [ #428222 ] vga font not installed
added script called "install-x11-fonts" which should help people install
the VGA font on X windows systems, if it isn't already there.
-------------------------------------------------------------------------
Changes in 1.2 (June 3, 2001):
- [ #427259 ] rombios HALT calls don't print
Fixed bios/rombios.c HALT macro so that it writes the line number of the
panic to the PANIC_PORT (port 0x400) and then does NOT do a halt
instruction. Also changed iodev/unmapped.cc so that the line number written
to PANIC_PORT is displayed as a BX_PANIC message. Because the HALT
macro now triggers the normal panic behavior, it can be controlled by
the bochsrc.
- [ #429016 ] crash if no hard drive
rombios used to call HALT macro if no hard drive was found. Now it only
calls HALT if a hard drive has an illegal geometry.
- [ #425388 ] include source for simple disk img tool
[ #428478 ] mkimg tool creates image 1 byte too big
Added bximage tool, which makes empty floppy and hard disk images.
It is now included in the top level Makefile, so it will get built
by default on all platforms.
- [ #426036 ] eth_fbsd.cc compile problem on solaris26
added configure test so that "configure --enable-ne2000" only
includes the Berkeley Packet Filter code (eth_fbsd) if the header
file <net/bpf.h> can be found. If you don't have BPF the ne2000
will not actually move packets, but at least it will compile clean now.
- [ #428214 ] 1.2.pre1 need documentation for binaries
Write windows and linux specific documentation to be installed in
binary releases.
- [ #429258 ] disable RESET for version 1.2
Since soft reset was not completely working, I reverted the reset patch.
Now it does panics on reset instead of trying to reboot, as the old
bochs versions did.
- [ #428222 ] Should the linux RPM install vga font?
now font/vga.pcf will be installed in the RPM package
- [ #429020 ] stop renaming the BIOS!!!
new BIOS changes are now in BIOS-bochs-latest, instead of a BIOS
whose name changes every time we change anything! To help distinguish
different BIOS versions, the BIOS now prints its RCS Id into the
log file.
- [ #428625 ] compile problem if SHOW_IPS is on
removed extra paren that broke SHOW_IPS
- [ #428219 ] PCI doesn't compile with SMF=1
- [ #429375 ] pthreads detection broken
- [ #429073 ] configure: if no X11, makes bad config
- [ #429229 ] install current .bochsrc in binary rels
- install Tim's man pages on linux RPM
- BIOS prints messages in log in case of boot failure
- rewrote instructions for compiling in win32 (win32.txt)
- fixed link in HTML changelog.html to point to the real sources on SF.
- added missing LOG_THIS definition to gui/nogui.cc and gui/rfb.cc
- added additional check for null pointer in debugger exit routine
- added diskd to .bochsrc
-------------------------------------------------------------------------
Changes in version 1.2-pre1 (May 25, 2001):
- major cleanup of .bochsrc
- major cleanup of stderr output: prints bochs version information when
starting, and at the end it tries to print the message that caused
bochs to quit.
- two hard disk support (diskd). At present, you cannot have two
hard drives and a cdrom at the same time, because there is only
one IDE controller with two channels.
- split hard disk support allows different partitions to be stored in
different image files
- two new GUI choices: term mode and RFB mode. Term is a text-only
interface, and RFB creates a server that can be accessed using
the AT&T VNC viewer.
- now Bochs can simulate an SMP machine, if you configure with
--enable-processors=N. Configuring more than one processor has
a major performance impact, so the default is 1 processor.
See SMP documentation for more details.
- to make SMP work, bx_mem and bx_cpu have been replaced with
bx_mem_array[] and bx_cpu_array[]. The cpus are referenced through
the BX_CPU(n) macro and memories through the BX_MEM(n). Normal
mode has one cpu and one memory, SMP mode has multiple cpu's and
one memory, cosimulation mode has multiple cpus and multiple memories.
- use --enable-cpu-level=6 to make Bochs claim to be a Pentium Pro.
The only feature that requires CPU level 6 is apic support.
- new logging system by Todd Fries, which has 4 levels of event
severity (panic, error, info, debug). There are new .bochsrc
options that control what action to take when a
panic/error/info/debug event occurs.
- now searches for .bochsrc, bochsrc, bochsrc.txt, and (on unix only)
$HOME/.bochsrc.
- use GNU readline library if --enable-debugger is on, as long as readline
can be found on the machine
- configure checks for existence strtoull and strtouq. if neither exists,
Bochs uses its own implementation
- applied patches from Cliff Hones <cliff@aonix.co.uk> to fix up the
rombios. This includes many improvements, which you can list by
doing "cvs log -r 1.6 bios/rombios.c" or looking at cvsweb.
- added suggested geometries of larger disks to the documentation
- this is the first release to have official binary packages for win32
and Linux. There is a new "make rpm" in the top-level Makefile which
will create an RPM of the current bochs directory. To use this,
become root and type "configure; make rpm".
- applied some FreeBSD patches from Maxim Sobolev (cdrom and serial).
-------------------------------------------------------------------------
Changes in version 1.1.2 (bugfix3, May 16, 2001):
- updated Elpin VGA BIOS to version 2.40, and changed pointer in .bochsrc
- fixed .conf.x86 script so that it uses c++ instead of egcs for C++ files
- now Makefile targets that recurse into subdirectories use double colons,
so that it will always recurse into subdirectories. Now a single make
command should notice a modified source file in a subdir.
- fixed bug in bx_panic. If BX_PANIC_IS_FATAL==0 and a (non-fatal) panic
occurs, it used to call bx_atexit() and then return. It should never
call bx_atexit, which starts to shut down the simulator, unless it's
really going to quit!
- support 2.88 MB floppy disks
- since dataseghack is checked in as non-executable, invoke it with
"csh dataseghack"
- double fault patch from Thomas Petazzoni <thomas.petazzoni@ifrance.com>,
sourceforge patch #423726.
- removed -fno-builtin from fpu makefiles
- redefine u_char, u_short, etc. in order to not conflict with system
definitions of these same types.
- in cdrom.cc, remove the extern "C" { } structure around some of the
header files. This is no longer necessary.
- do not panic on hard disk command 0x1f2 (read sector count)
- in keyboard.cc:
- apply Todd Fries' reset patch
- recognize most of the "Grey" insert/delete/home/end/etc. keys the
same as keypad keys.
- removed panic on "kbd_ctrl_to_kbd(): got value of 0x??"
- implement mouse command 0xf6 (set defaults)
- apply Suboner@aol.com's Xwindows timing patch from
http://sourceforge.net/tracker/index.php?func=detail&aid=418730&group_id=12580&atid=312580
- remove all patches from patches subdir which have already been applied.
The remaining ones are under consideration but not applied.
-------------------------------------------------------------------------
Changes in version 1.1.1 (bugfix2, April 9, 2001):
- in soundwin.cc, arg 3 should be typecast to LPWAVEFORMATEX
- in fpu_entry.c, Bryce mistyped his own initials!
- in configure.in and configure, define good defaults for VC++
#define BX_64BIT_CONSTANTS_USE_LL 0
#define inline __inline
#define BX_NO_EMPTY_STRUCTS 1
#define BX_NO_ATTRIBUTES 1
#define BX_HAVE_HASH_MAP 0
- in config.h.in, fixed typo in #error message
-------------------------------------------------------------------------
Changes in version 1.1 (bugfix1, April 6, 2001):
(FIXED, patch #414360: update copyrights)
update headers. Change copyright to 2001, replace config.h.in header with
the standard mandrake header that every other file uses.
(FIXED, patch #414356: inlines)
make macro to replace inline and static/extern keywords. Then make
define the macro appropriately based on configure.
(FIXED: patch #414234: macos-no-strdup)
--with-macos should force HAVE_STRDUP=0.
(FIXED, patch #403027: Fix mouse bugs in Linux and BSD)
Linux and BSD (maybe others) cause panic in mouse code.
(FIXED, patch #413851: const64bit patch)
VC++ does not allow "LL" after 64-bit constant.
(FIXED, patch #413859: fabs symbol conflict)
fpu code contains fabs, which conflicts with math library fabs.
(FIXED, patch #403004: Implement aborts on a few SET FEATURE commands...)
Implement aborts on a few SET FEATURE commands for ATA.
(FIXED, patch #402991: Update to iodev/vga.cc to add 3c3h read support)
Implement VGA enable register, at 0x3c3.
(FIXED, patch #403027: Fix mouse bugs in Linux and BSD)
Mouse panic in linux/BSD:
KBD: io write 0x64: command = 0xD3(write mouse outb)
(FIXED, patch #414229: panic-is-fatal)
Allow user to decide if panic is fatal, or just a warning
(FIXED, patch #414230: sun-cdrom)
Support Sun CDROM
(FIXED, patch #413574: portable1)
there are cases where a pointer is cast to a 32-bit int,
then later cast to a pointer and dereferenced, which crashes any 64-bit
machine.
(FIXED, patch #413574: portable1)
some machines have no snprintf or strtoull. include a replacement function
when needed.
(FIXED, patch #413574: portable1)
Some compilers don't allow "typedef struct { } foo;"
(FIXED, patch #413574: portable1)
Some people don't have hash_map.h, used in dbg_main.cc. Disable this code
if hash_map.h not found.
(FIXED, patch #413574: portable1)
Some compilers can't handle labels at the end of a block, as in
void main () { /*code*/ label: }
(FIXED, patch #413574: portable1)
Most compilers can't handle __attribute__. Use macro to define it away.
(FIXED, patch #413574: portable1)
if --enable-debugger, turn on --enable-disasm too.
(FIXED, patch #413574: portable1)
ome compilers can't handle any chars after an #endif
(FIXED, patch #413574: portable1)
wrong type arg1 of bx_dbg_watch and bx_dbg_unwatch. The code in
lexer.l was calling it with integers (not booleans)
(FIXED, patch #413574: portable1)
in fpu code, "setcc" macro was implemented with braces inside parens,
which some compilers don't understand.
(FIXED, patch #413574: portable1)
in fpu_entry.c, FPU_load_int32 was consistently called with arg1 of
type (s32 *), but should be (u32 *)
(FIXED, patch #413574: portable1)
comment out sigcontext structure in fpu/stubs/asm/sigcontext.h because
it conflicted with sigcontext of other machines. This struct was never
used by bochs anyway.
(FIXED, patch #414046: portable2)
move definition of missing library functions into osdep.h and osdep.cc,
include contents of macutils*.
(FIXED, patch #414061: win32-rawcd)
CDROM drive letter for WIN32 should not be hardcoded.
(FIXED, patch #414060: win32-rawfloppy)
Bypass fstat when opening WIN32 raw floppy disk.
(FIXED, patch #414226: pit-panic)
WinME install dies with panic:
bochs: panic, pit: outp(43h): comm Bh, mode 00, bcd 00 unhandled
I think I had a similar problem. All three timers should support modes
0, 2, and 3. Other modes really aren't implemented.
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