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CHANGES.txt
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Changes in 2.3.7 (June 3, 2008):
Brief summary :
+ More optimizations in CPU code - Bochs 2.3.7 is more than 2x faster
than Bochs 2.3.5 build !
- Implemented LBA48 support in BIOS
- Added memory access tracing for Bochs internal debugger
- Implemented Intel(R) XSAVE/XRSTOR and AES instruction set extensions
- Many fixes in CPU emulation and internal debugger
- MenuetOS64 floppy images booting perfect again !
- updated LGPL'd VGABIOS to version 0.6b
Detailed change log :
- CPU
- Support of XSAVE/XRSTOR CPU extensions, to enable configure with
--enable-xsave option
- Support of AES CPU extensions, to enable configure with
--enable-aes option
- Fixed Bochs failure on RISC host machines with BxRepeatSpeedups
optimization enabled
- Implemented SYSENTER/SYSEXIT instructions in long mode
- More than 100 bugfixes in CPU emulation correctness (both x86 and x86-64)
- MenuetOS64 floppy images booting perfect again !
- Updated CPU instrumentation callbacks
- Bochs Internal Debugger and Disassembler
- Added memory access tracing for Bochs internal debugger, enable
by typing 'trace-mem on' in debugger command line
- Many bug fixes in Bochs internal debugger and disassembler
- System BIOS (Volker)
- Implemented LBA48 support
- Added generation of SSDT ACPI table that contains definitions
for available processors
- Added RTC device to ACPI DSDT table
- Added implementation of SMBIOS
- I/O devices (Volker)
- VGA
- Implemented screen disable bit in sequencer register #1
- Implemented text mode cursor blinking
- Serial
- new serial modes 'pipe-server' and 'pipe-client' for win32
- new serial mode 'socket-server'
- Configure and compile
- Fixed configure bug with enabling of POPCNT instruction, POPCNT
instruction should be enabled by default when SSE4.2 is enabled.
- Removed --enable-magic-breakpoint configure option. The option is
automatically enabled if Bochs internal debugger is compiled in.
It is still possible to turn on/off the feature through .bochsrc.
- Allow boot from network option in .bochsrc
- Added Bochs version info for Win32
- Display libraries
- implemented text mode character blinking in some guis
- improved 'x' gui runtime dialogs
- SF patches applied
[1980833] Fix shutdown status code 5h handler by Kevin O'Connor
[1928848] "pipe" mode for serial port (win32 only) by Eugene Toder
[1956843] Set the compatible pci interrupt router back to PIIX by Sebastian
[1956366] Do not announce C2 & C3 cpu power state support by Igor Lvovsky
[1921733] support for LBA48 by Robert Millan
[1938185] Fix link problem with --enable-debugger by Sebastian
[1938182] Makefile.in - use @IODEV_LIB_VAR@ by Sebastian
[1928945] fix for legacy rombios - e820 map and ACPI_DATA_SIZE by Sebastian
[1925578] rombios32.c - fix ram_size in ram_probe for low memory setup by Sebastian
[1908921] rombios32.c - move uuid_probe() call by Sebastian
[1928902] improvements to load-symbols by Eugene Toder
[1925568] PATCH: msvc compilation by Eugene Toder
[1913150] rombios.c - e820 cover full size if memory <= 16 mb by Alexander van Heukelum
[1919804] rombios.c - fix and add #ifdef comments by Sebastian
[1909782] rombios.c - remove segment values from comment by Sebastian
[1908918] SMBIOS - BIOS characteristics fix by Sebastian
[1901027] BIOS boot menu support (take 3)
[1902579] rombios32.c - define pci ids by Sebastian
[1859447] Pass segment:offset to put_str and introduce %S by Sebastian
[1889057] rombios.c - boot failure message by Sebastian
[1891469] rombios.c - print BEV product string by Sebastian
[1889851] Win32 version information FILEVERSION for bochs.exe by Sebastian
[1889042] rombios.c - fix comment by Sebastian
[1881500] bochsrc, allow boot: network by Sebastian
[1880755] Win32 version information for bochs.exe by Sebastian
[1880471] SMBIOS fix type 0 by Sebastian
[1878558] SMBIOS fixes by Sebastian
[1864692] SMBIOS support by Filip Navara
[1865105] Move bios_table_area_end to 0xcc00 by Sebastian
[1875414] Makefile.in - change make use by Sebastian
[1874276] Added instrumentation for sysenter/sysexit by Lluis
[1873221] TLB page flush: add logical address to instrumentation by Lluis
[1830626] lba32 support by Samuel Thibault
[1861839] Move option rom scan after floppy and hard drive post by Sebastian
[1838283] Early vga bios init by Sebastian
[1838272] rom_scan range parameter by Sebastian
[1864680] Save CPUID signature by Filip Navara
- these S.F. bugs were closed
[1976171] Keyboard missing break code for enter (0x9C)
[666433] physical read/write breakpoint sometimes fails
[1744820] info gdt and info idt shows the entire tables
[1755652] graphics: MenuetOS64 shows black screen
[1782207] Windows Installer malfunction, Host=Linux, Guest=Win98SE
[1697762] OS/2 Warp Install Failed
[1952548] String to char * warnings
[1940714] SYSENTER/SYSEXIT doesn't work in long mode
[1422342] SYSRET errors
[1923803] legacy rombios - e820 map and ACPI_DATA_SIZE
[1936132] Link problem with --enable-debugger & --enable-disasm
[1934477] Linear address wrap is not working
[1424984] virtual machine freezes in Bochs 2.2.6
[1902928] with debugger cpu_loop leaves CPU with unstable state
[1898929] Bochs VESA BIOS violates specs (banks == 1)
[1569256] bug in datasegment change in long mode
[1830662] ACPI: no DMI BIOS year, acpi=force is required
[1868806] VGA blink enable & screen disable
[1875721] Bit "Accessed" in LDT/GDT descriptors & #PF
[1874124] bx_Instruction_c::ilen() const
[1873488] bochs-2.3.6 make fails on dbg_main.cc
- these S.F. feature requests were implemented
[1422769] SYSENTER/SYSEXIT support in x86-64 mode
[1847955] Version information for bochs(dbg).exe
[939797] SMBIOS support
-------------------------------------------------------------------------
Changes in 2.3.6 (December 24, 2007):
Brief summary :
+ More than 25% emulation speedup vs Bochs 2.3.5 release!
- Thanks to Darek Mihocka (http://www.emulators.com)
for providing patches and ideas that made the
speedup possible!
+ Up to 40% speedup vs Bochs 2.3.5 release with trace cache optimization!
- Lots of bugfixes in CPU emulation
- Bochs benchmarking support
- Added emulation of Intel SSE4.2 instruction set
Detailed change log :
- CPU
- Added emulation of SSE4.2 instruction set, to enable use
--enable-sse=4 --enable-sse-extension configure options
to enable POPCNT instruction only use configure option
--enable-popcnt
- Implemented MTRR emulation, to enable use --enable-mtrr configure
option. MTRRs is enabled by default when cpu-level >= 6.
- Implemented experimental MONITOR/MWAIT support including optimized
MWAIT CPU state and hardware monitoring of physical address range,
to enable use --enable-monitor-mwait configure option.
- Removed hostasm optimizations, after Bochs rebenchmarking it was found
that the feature bringing no speedup or even sometimes slows down
emulation!
- Merged trace cache optimization patch, the trace cache optimization
is enabled by default when configure with --enable-all-optimizations
option, to disable trace cache optimization configure with
--disable-trace-cache
- Many minor bugfixes in CPU emulation (both ia32 and x86-64)
- Updated CPU instrumentation callbacks
- Bochs Internal Debugger and Disassembler
- Many fixes in Bochs internal debugger and disassembler, some debugger
interfaces significantly changed due transition to the param tree
architecture
- Added support for restoring of the CPU state from external file
directly from Bochs debugger
- Configure and compile
- Renamed configure option --enable-4meg-pages to --enable-large-pages.
The option enables page size extensions (PSE) which refers to 2M pages
as well.
- Removed --enable-save-restore configure option, save/restore feature
changed to be one of the basic Bochs features and compiled by default
for all configurations.
- Added new Bochs benchmark mode. To run Bochs in benchmark mode execute
it with new command line option 'bochs -benchmark time'. The emulation
will be automatically stopped after 'time' millions of emulation
cycles executed.
- Another very useful option for benchmarking of Bochs could be enabled
using new 'print_timestamps' directive from .bochsrc:
print_timestamps: enable=1
- Added --enable-show-ips option to all configuration scripts used to
build release binaries, so all future releases will enjoy IPS display.
- Enable alignment check in the CPU and #AC exception by default for
--cpu-level >= 4 (like in real hardware)
- SF patches applied
[1491207] Trace Cache Speedup patch by Stanislav
[1857149] Define some IPL values by Sebastian
[1850183] Get memory access mode in BX_INSTR_LIN_READ by Lluis Vilanova
[1841421] pic: keep slave_pic.INT and master_pic.IRQ_in bit 2 in sync by Russ Cox
[1841420] give segment numbers in exception logs by Russ Cox
[1801696] Allow Intel builds on Mac OS X
[1830658] Fix >32GB disk banner by Samuel Thibault
[1813314] Move #define IPL_* and typedef ipl_entry by Sebastian
[1809001] Save PnP Option ROM Product Name string in IPL Boot Table by Sebastian
[1821242] Fix for #1801285, Niclist.exe broken by Sebastian
[1819567] Code warning cleanup
[1816162] Update comment on bios_printf() by Sebastian
[1811139] Trivial Fix when BX_PCIBIOS and BX_ROMBIOS32 not defined by Myles Watson
[1811190] Improve HD recognition and CD boot by Myles Watson
[1811860] Implement %X in bios_printf by Sebastian
[1809649] printf %lx %ld %lu by Myles Watson
[1809651] move BX_SUPPORT_FLOPPY by Myles Watson
[1809652] dpte and Int13DPT fixes by Myles Watson
[1809669] clip cylinders to 16383 in hard drive by Myles Watson
[1799903] Build BIOS on amd64 by Robert Millan
[1799877] Fix for parallel build (make -j2) by Robert Millan
- these S.F. bugs were closed
[1837354] website bug: View the Source link broken
[1801268] Reset from real mode no longer working
[1843250] Using forward slashes gives invalid filename
[1823446] BIOS bug, local APIC #0 not detected
[1801285] Niclist.exe broken
[1364472] breakpoints sometimes don't work
[994451] breakpoint bug
[1801295] NSIS installer vs Windows Notepad
[1715328] Unreal mode quirk
[1503972] debugger doesn't debug first instruction on exception
[1069071] div al, byte ptr [ds:0x7c18] fails to execute
[1800080] Wrong "BX_MAX_SMP_THREADS_SUPPORTED" assertion
- these S.F. feature requests were implemented
[1662687] Download for Win32-exe with x64 Mode and debugging
[604221] Debugger command: query lin->phys mapping
-------------------------------------------------------------------------
Changes in 2.3.5 (September 16, 2007):
Brief summary :
- Critical problems fixed for x86-64 support in CPU and Bochs internal debugger
- ACPI support
- The release compiled with x86-64 and ACPI
- Hard disk emulation supports ATA-6 (LBA48 addressing, UDMA modes)
- Added emulation of Intel SSE4.1 instruction set
Detailed change log :
- CPU
- Fixed critical bug with 0x90 opcode (NOP) handling in x86-64 mode
- implied stack references where the stack address is not in canonical form
should causes a stack exception (#SS)
- Added emulation of SSE4.1 instruction set (Stanislav)
- Do not save and restore XMM8-XMM15 registers when not in x86-64 mode
- Fixed zero upper 32-bit part of GPR in x86-64 mode
- CMOV_GdEd should zero upper 32-bit part of GPR register even if the
'cmov' condition was false !
- Implemented CLFLUSH instruction, report non-zero cache size in CPUID
- Fixed PUSHA/POPA instructions behavior in real mode
- Fixed detection of inexact result by FPU
- Fixed denormals-are-zero (DAZ) handling by SSE convert instructions
- Implemented Misaligned Exception Mask support for SSE (MXCSR[17])
- Implemented Alignment Check in the CPU and #AC exception, to enable
use --enable-alignment-check configure option
- General
- 2nd simulation support in wxBochs now almost usable (simulation cleanup
code added and memory leaks fixed)
- Configure and compile
- several fixes for MacOSX, OpenBSD and Solaris 10
- enable save/restore feature by default for all configurations
- reorganized SSE configure options to match Intel(R) Programming
Reference Manual, new option introduced for SSE extensions enabling.
To enable Intel Core Duo 2 new instructions use
--enable-sse=3 --enable-sse-extension
enabling of SSE4.1 (--enable-sse=4) will enable SSE3 extensions as well
- removed old PIT, always use new PIT written by Greg Alexander,
removed configure option --enable-new-pit
- I/O devices (Volker)
- Floppy
- partial non-DMA mode support (patch by John Comeau)
- Hard drive / cdrom
- hard disk emulation now supports ATA-6 (LBA48 addressing, UDMA modes)
- VMWare version 4 disk image support added (patch by Sharvil Nanavati)
- PCI
- initial support for the PIIX4 ACPI controller
- Serial
- added support for 3-button mouse with Mousesystems protocol
- USB
- experimental USB device change support added
- rewrite of the existing USB devices code
- new USB devices 'disk' and 'tablet' (ported from the Qemu project)
- Bochs internal debugger
- fixed broken debugger "rc file" option (execute debugger command from file)
- implementation of a gui frontend ("windebug") for win32 started
- gdbstub now accepts connection from any host
- several documentation updates
- a lot of disasm and internal debugger x86_64 support fixes
- Configuration interface
- fixes and improvements to the save state dialog handling
- Display libraries
- text mode color handling improved in some guis
- win32 fullscreen mode (patch by John Comeau)
- System BIOS (Volker)
- 32-bit PM BIOS init code for ACPI, PCI, SMP and SMM (initial patches by
Fabrice Bellard)
- PCI BIOS function "find class code" implemented
- SF patches applied
[1791000] 15h 8600h is reading the wrong stack frame by Sebastian
[1791016] rombios32.c, ram_probe(), BX_INFO missing value by Sebastian
[1786429] typo in bochsrc.5 by Sebastian
[1785204] Extend acpi_build_table_header to accept a revision number by Sebastian
[1766536] Partial Patch for Bug Report 1549873 by Ben Lunt
[1763578] ACPI Table Revision 0 -> 1
[1642490] implement alignment check and #AC exception by Stanislav Shwartsman
[1695652] [PATCH] .pcap pktlog and vnet PXE boot by Duane Voth
[1741153] Add expansion-ROM boot support to the ROMBIOS
[1734159] Implemented INT15h, fn 0xC2 (mouse), subfn 3, set resolution
[1712970] bios_printf %s fix
[1573297] PUSHA/POPA real mode fix by Stanislav Shwartsman
[1641816] partial support for non-DMA access to floppy by John Comeau
[1624032] shows where write outside of memory occurred by John Comeau
[1607793] allow fullscreen when app requests it by John Comeau
[1603013] Bugfix for major NOP problem on x64 by mvysin
[1600178] Make tap and tuntap compile on OpenBSD by Jonathan Gray
[1149659] improve gdbstub network efficiency by Avi Kivity
[1554502] Trivial FPU exception handling fix
- these S.F. bugs were closed
[1316008] Double faults when it shouldn't - gcc 4.0.2
[1787289] broken ABI for redolog class when enable-compressed-hd
[1787500] tftp_send_optack not 64bit clean
[1264540] Security issue with Bochs website
[1767217] Debugger Faults including ud2
[1729822] Various security issues in io device emulation
[1675202] mptable hosed (bad entry count in header)
[1197141] 'make install' installs to bad location
[1157623] x86Solaris10 cannot recoginize ACPI RSD PTR
[1768254] large HDD in Bochs/bximage
[1496157] Windows Vista Beta2 dosn't boot
[1755915] Illegal Hard Disk Signature Output
[1717790] info gdt and info idt scrolls away, too long result
[1726640] Debugger displays incorrect segment for mov instruction
[1719156] Typo in misc_mem.cpp
[1715270] Debugger broken in/beyond 2.3
[1689107] v8086 mode priviledge check failed
[1704484] A few checks when CPU_LEVEL < 4
[1678395] Problem with zero sector...
[876990] SA-RTL OS fails on PIC configuration
[1673582] save/restore didn't restore simulation correctly
[1586662] EDD int 13h bug, modify eax
[666618] POP_A Panic in DOS EMU
[1001485] panic: not enough bytes on stack
[1667336] delay times an order of magnitude slow
[1665601] crash disassembling bootcode
[1657065] CVS sources won't compile
[1653805] bochs's gdbstub uses incorrect protocol
[1640737] ASM sti command frezzes guest OS
[1636439] latest CVS sources don't compile under Cygwin
[1634357] disasm incorrect (no sign ext) displacement in 64-bit mode
[1376453] pcidev segfaults bochs
[1180890] IOAPIC in BOCHS - WinXP 64 in MP version
[1597528] 2.3 fails to compile on amd64
[1526255] FLD1 broken when compaling with gcc 4.0.x
[1597451] eth_fbsd is broken under FreeBSD
[1571949] Bochs will not compile under Solaris
[1500216] Bochs fails to boot BeOs CD
[1458339] bochs-2.2.6 WinXP Binary ACPI error installing FreeBSD 6.0
[1440011] patches needed for FreeBSD 6.0 to compile Bochs
[431674] some devices don't have a prefix
[458150] QNX demo disk crashes with new pit
[818322] Bochs 2.1 cvs: OS/2 - read verify on non disk
[906840] KBD: bogus scan codes generated in set 3
[1005053] No keyboard codes translation
[1109374] Problem with Scancodeset 2
[1572345] Bochs won't continue
[1568153] Bochs looks for (and loads?) unspecified display libraries
[1563462] Errors in /iodev/harddrv.h
[1562172] TLB_init() fails to initialize priv_check array if USE_TLB 0
[1385303] debugger crashes after panic
[1438227] crc.cpp missing in bx_debug version 2.2.6
[1501825] debugger crashes on to high input
[1420959] Memory leak + buffer overflow in Bochs debugger
[1553289] Error in Dis-assembler
[542464] I cannot use FLAT
[1548270] Bochs won't die with its pseudo terminal
[1545588] roundAndPackFloatx80 does not detect round up correctly
-------------------------------------------------------------------------
Changes in 2.3 (August 27, 2006):
Brief summary :
- limited save/restore support added (config + log options, hardware state)
- configuration parameter handling rewritten to a parameter tree
- lots of cpu and internal debugger fixes
- hard disk geometry autodetection now supported by most of the image types
- hard disk emulation now supports ATA-3 (multiple sector transfers)
- VBE memory size increased to 8MB and several VGA/VBE fixes
- updated LGPL'd VGABIOS to version 0.6a
Detailed change log :
- CPU and internal debugger fixes
- Fixed bug in FSTENV instruction (Stanislav Shwartsman)
- Recognize #XF exception (19) when SSE is enabled
- Fixed bug in PSRAW/PSRAD MMX and SSE instructions
- Save and restore RIP/RSP only for FAULT-type exceptions, not for traps
- Correctly decode, disassemble and execute multi-byte NOP '0F F1' opcode
- Raise A20 line after system reset (Stanislav Shwartsman)
- Implemented SMI and NMI delivery (APIC) and handling in CPU (Stanislav)
- Experimental implementation of System Management Mode (Stanislav)
- Added emulation of SSE3E instructions (Stanislav Shwarstman)
- Save and restore FPU opcode, FIP and FDP in FXSAVE/FRSTOR instructions
- Fixed bug in MOVD_EdVd opcode (always generated #UD exception)
- Fixed critical issue, Bochs was not supporting > 16 bit LDT.LIMIT values
- Many fixes in Bochs internal debugger and disassembler
- CPU x86-64 fixes
- Fixed SYSRET instruction implementation
- Fixed bug in CALL/JMP far through 64-bit callgate in x86-64 mode
- Correctly decode, disassemble and execute 'XCHG R8, rAX' instruction
- Correctly decode and execute 'BSWAP R8-R15' instructions
- Fixed ENTER and LEAVE instructions in x86-64 mode (Stanislav)
- Fixed CR4 exception condition (No Name)
- Fixed x86 debugger to support x86-64 mode (Stanislav)
- APIC and SMP
- Support for Dual Core and Intel(R) HyperThreading Technology. Now you
could choose amount of cores per processor and amount of HT threads per
core from .bochsrc for SMP simulation (Stanislav Shwartsman)
- Allow to control SMP quantum value through .bochsrc CPU
option parameter. Previous Bochs versions used hardcoded quantum=5
value.
- Fixed interrupt priority bug in service_local_apic()
- Fixed again reading of APIC IRR/ISR/TMR registers. Finally it becomes
fully correct :-)
- Configure and compile
- Moved configure time --enable-reset-on-triple-fault option to runtime,
the 'cpu' option in .bochsrc is extended and the old configure option
is deprecated (Stanislav Shwartsman)
- Removed --enable-pni configure option, to compile with PNI use
--enable-sse=3 instead (Stanislav Shwartsman)
- enable SEP (SYSENTER/SYSEXIT) support by default for Penitum II+
processor emulation (i.e. if cpu-level >= 6 and MMX is enabled)
- general
- Limited save/restore support added. The state of CPU, memory and all
devices can be saved now (state of harddisk images not handled yet).
- Fixed several memory leaks
- configuration interface
- Configuration parameter handling rewritten to a parameter tree. This is
required for dynamic menus/dialogs, user-defined options and save/restore.
- Support for user-defined bochsrc options added
- help support at the parameter prompt in textconfig added
- I/O devices (Volker)
- Floppy
- partial sector transfers fixed
- Hard drive / cdrom
- several fixes to the IDE register behaviour (e.g. in case of a channel
with only one drive connected)
- fixed data alignment of 'growing' hard drive images (sharing images
between Windows and Linux now possible)
- disk geometry autodetection now supported by most of the image types
(unsupported: external, dll and compressed modes)
- multi sector read/write commands implemented
- hard disk now reporting ATA-3 supported
- ATAPI 'inquiry' now returns a unique device name
- Keyboard
- reset sent to keyboard has no effect on the 8042 (scancode translation)
- PCI
- forward PIRQ register changes to the I/O APIC (if present)
- attempt to fix and update the emulation part of 'pcidev' (untested)
- VGA
- VBE memory size increased to 8MB and several VBE fixes
- VGA memory read access fixed (bit plane access and read mode)
- VGA memory is now a part of the common video memory
- System BIOS (Volker)
- enable interrupts before executing INT 19h
- fixed ATA device detection in case of one drive only connected to controller
- improved INT 15h function AX=E820h
- real mode PCI BIOS now returns IRQ routing information (function 0Eh)
- keyboard LED flags handling fixed and improved
- fixed handling of extended keys in INT 09h
- Updated LGPL'd VGABIOS to version 0.6a
- SF patches applied
[1340111] fixes and updates to usb support by Ben Lunt
[1539420] minor addition to pci_usb code by Ben Lunt
[1455958] call/jmp through call gate in 64-bit mode
[1433107] PATCH: fix compile with wxwindows 2.6 (unicode / utf8) by jwrdegoede
[1386671] Combined dual core and hyper-threading patch
- these S.F. bugs were closed
[833927] TTD: System Error TNT.40025: Unexpected processor exception
[789230] Sending code that shows lock up when setting idt
[909670] Problems with Symantec Ghost
[1540241] include missing in osdep.cc
[1539373] Incorrect disasm for "mov moffset,bla" in 64bit
[1538419] incorrect disassembly of [rip+disp] with rex.b
[1535432] shift+cursor key maps to a digit
[1504891] Knoopix 5.0.1 error
[1424355] bochs-2.2.6 ata failure in windoze 98se
[1533979] wrong disassembly of IN instruction
[620059] paste won't stop
[1164904] status bar doesn't show num/caps/scroll lock status
[1061720] ATA Support level for HD
[1522196] Broken CHANGES link in main page
[1438415] crash if screen scrolled downwards
[778441] Shouldn't interrupts be enable after BIOS?
[1514949] I got a problem with the 8253 timer
[1513544] disasm of 0xec (in AL,DX) returns ilen of 2 instead of 1
[1508947] APIC interrupt priority checking and interrupt delivery
[766286] Debugger halts after any GPF exception
[639143] va_list is not a pointer on linuxppc
[1501815] debugger examines memory over page-boundary wrong
[1503978] movsb/w/d doesn't work when direction is stored
[1499405] WinPCap has changed URL hosting
[1498519] APIC IRR bits not set while interrupts disabled
[1498193] Bochs segfaults on LTR instruction
[787140] Guest2HostTLB optimization bug
[1492070] instrument stop
[1487772] No SEP on P4
[1488335] Growing hard disk images severe interoperability errors!
[1076312] Shadow RAM and TLB
[1282249] The real i440FX chipset Award bios hangs
[1479763] mistake "mov ax,[es:di]" for "mov ax,[ds:di]"
[1453575] Misconfigured floppy DMA transfers do not terminate.
[1460068] Incorrect handling for the Options Menu Item
[910203] bochs-2.1.1 wx.lo failed
[1438654] PANIC when trying to run install-amd64-minimal-2005.0.iso
[1458320] compile hdimage.h fails
[1455880] bochs-2.2.6,2: make error on FreeBSD
[696890] Network wouldn't run under W2k hosting MSDOS
[673391] SMP timer problems
[1291059] wxWindows GUI on non-windows/configure issue
[1356450] bochs 2.2.1 errors-omittions
[1178017] Win98 guest cannot receive network packets from host
[1076315] a20_mask after restarting
[1436323] real hw does not panic when bad Ib in CMPSS_VssWssIb
[1435269] cdrom_amigaos is not compilable
[1433314] disasm issues
[1170614] relative jumps/calls wrong in debugger
[758121] user might get confused when interrupt handler invoked
[1170622] You cannot toggle OFF "show" flags
[1406387] JMP instruction should display absolute address
[1428813] PANIC: ROM address space out of range
[1426288] DR-DOSs EMM386 problem
[1412036] Bochs cannot recognize PCI NIC correctly
[435115] dbg: modebp broken and no docs
[1419366] disasm cs:eip does not work anymore
[1419393] SSE's #XF exception -> "exception(19): bad vector"
[1419429] disassembly of "260f6f00" show DS: instead of ES: prefix
[1417583] Interrupt behaviour changed from 2.2.1 to 2.2.5
[1418281] 'push' (6A) incorrectly disassembled
[1417791] FLDENV generating exception when real hw does not.
[1264583] OS/2 1.1 doesn't run
-------------------------------------------------------------------------
Changes in 2.2.6 (January 29, 2006):
- First major SMP release !
- several APIC and I/O APIC fixes make SMP Bochs booting Windows NT4.0
or Knoppix 4.0.2 without noapic kernel option in SMP configuration.
- critical APIC timer bug fixed
- obsolete SMP BIOS images removed (MP tables created dynamicaly)
- determine number of processors in SMP configuration through .bochsrc
new .bochsrc option 'CPU' allows to choose number of processors to emulate
- new configure option --enable-smp to configure Bochs for SMP support,
the old --enable-processors=N option is deprecated
- CPU and internal debugger fixes
- enabled #PCE bit in CR4 register, previosly setting of this bit
generated #GP(0) fault
- enabled LAHF/SAHF instructions in x86-64 mode
- fixed bug in PMULUDQ SSE2 instruction
- fixes in Bochs debugger
- Configure and compile
- enable VME (virtual 8086 mode extensions) by default if cpu-level >= 5
- enable Bochs disassembler by default for all configurations
- win32 installer script improvements
- ips parameter moved to new 'CPU' option
- show IPS value in status bar if BX_SHOW_IPS is enabled
- Other
- several fixes in the hard drive, keyboard, timer, usb and vga code
- new user button shortcut "bksl" (backslash)
- updated Bochs instrumentation examples
- user and development documentation improved
-------------------------------------------------------------------------
Changes in 2.2.5 (December 30, 2005):
Brief summary :
- added virtual 8086 mode extensions (VME) implementation
- several fixes/improvements in x86-64 emulation, debugger and disassembler
- new serial mode 'socket' connects a network socket
- IDE busmaster DMA feature for harddisks and cdroms completed and enabled
- many improvements in Bochs emulated I/O devices (e.g. floppy, cdrom)
- Updated LGPL'd VGABIOS to version 0.5d
Detailed change log :
- CPU
- fixed XMM registers restore in FXRSTOR instruction (Andrej Palkovsky)
- print registers dump to the log if tripple fault occured
- fixed PANIC in LTR instruction (Stanislav)
- added virtual 8086 mode extensions (VME) implementation, to enable
configure with --enable-vme (Stanislav)
- flush caches and TLBs when executing WBINVD and INVD instructions
- do not modify segment limit and AR bytes when modifying segment
register in real mode (support for unreal mode)
- fixed init/reset values for LDTR and TR registers
- reimplemented hardware task switching mechanism (Stanislav)
- generate #GP(0) when fetching instruction cross segment boundary
- CPU (x86-64) (Stanislav Shwartsman)
- implemented call_far/ret_far/jmp_far instructions in long mode
- fixed IRET operation in long mode
- fixed bug prevented setting of NXE/FFXSR bits in MSR.EFER register
- implemented RDTSCP instruction
- do not check CS.limit when prefetching instructions in long mode
- fixed masked write instructions (MASKMOVQ/MASKMOVDQU) in long mode
- fetchdecode fixes for x86-64
- APIC
- Fixed bug in changing local APIC id (Stanislav)
- Fixed reading of IRR/ISR/TMR registers (patch by wmrieker)
- Implemented spurious interrupt register (Stanislav, patch by wmrieker)
- Fixed interrupt delivery bug (anonymous #SF patch)
- Correctly implemented ESR APIC register (Stanislav)
- Bochs debugger
- Fixed bug in bochs debugger caused breakpoints doesn't fire sometimes
(Alexander Krisak)
- watchpoints in device memory fixed (Nickolai Zeldovich)
- new debug interface to access Bochs CPU general purpose registers
with support for x86-64
- Disassembler (Stanislav Shwartsman)
- Fixed disassembly for FCOMI/FUCOMI instructions
- Full x86-64 support in disassembler. The disassembler module extended
to support x86-64 extensions. Still limited by Bochs debugger which
is not supporting x86-64 at all ;(
- I/O devices (Volker)
- general
- memory management prepared for large BIOS images (up to 512k)
- slowdown timer sleep rate fixed (now using 1 msec on all platforms)
- some device specific parameter handlers moved into the device code
- serial
- new serial mode 'socket' connects a network socket (#SF patch by Andrew Backer)
- hard drive / cdrom
- assign a unique serial number to each drive (fixes harddrive detection
problems with Linux kernels 2.6.x: "ignoring undecoded slave")
- geometry autodetection for 'flat' hard disk images added. Works with
images created with bximage (heads = 16, sectors per track = 63)
- ATAPI command 'read cd' implemented, some other commands improved
- cdrom read block function now tries up to 3 times before giving up
- emulation of raw cdrom reads added, some other lowlevel cdrom fixes
- IDE busmaster DMA feature for harddisks and cdroms completed and enabled
- disk image size limit changed from 32 to 127 GB
- split ATA/ATAPI emulation code and image handling code
- floppy
- fixes for OS/2 (patch by Robin Kay)
- disk change line behaviour fixed (initial patch by Ben Lunt)
- end-of-track (EOT) condition handling implemented
- more accurate timing for read/write data and format track commands using
a motor speed of 300 RPM
- timing of recalibrate and seek commands now depends on the step rate,
date rate and the steps to do
- floppy controller type changed to 82077AA
- cmos
- RTC 12-hour and binary mode implemented
- number of CMOS registers changed from 64 to 128
- bochsrc option 'cmosimage' improved
- save cmos image on exit if enabled
- speaker
- simple speaker support for OS X added (patch by [email protected])
- pci
- BeOS boot failure fix in the PCI IDE code
- don't register i/o and memory regions during PCI probe
- vga
- memory allocation for vga extensions fixed
- usb
- some bugfixes by Ben Lunt (mouse and keypad are usable now)
- networking modules
- VDE networking module now enabled on Linux
- display libraries
- general
- new syntax for the userbutton shortcut string and more keys supported
- win32
- fixed keycode generation for right alt/ctrl/shift keys
- runtime dialog is now a property sheet
- x11
- simple dialog boxes for the "ask" and "user shortcut" feature implemented
- Slovenian keymap added (contributed by Mitja Ursic)
- configuration interface
- ask dialog is now enabled by default for win32, wx and x display libraries
- bochsrc option floppy_command_delay is obsolete now (floppy timing now based
on hardware specs)
- floppy image size detection now available in the whole config interface
- some device specific parameter handlers moved into the device code
- calculate BIOS ROM start address from image if not specified
- System BIOS (Volker)
- PCI i/o and memory base address initialization added
- several keyboard interrupt handler fixes (e.g. patch by japheth)
- several floppy fixes (e.g. OS/2 works with patch by Robin Kay)
- some more APM functions added
- Updated LGPL'd VGABIOS to version 0.5d
- generate SMP specific tables dynamicly by the Bochs memory init code
- SF patches applied
[1389776] Disk sizes over 64 Gbytes by Andrzej Zaborowski
[1359162] disasm support for x86-64 by Stanislav Shwartsman
[857235] task priority and other APIC bugs, etc by wmrieker
[1359011] build breaks for 386 + debugger + disasm by shirokuma
[1352761] Infinite loop when trying to debug a triple exception
[1311170] small APIC bug fix (interrupt sent to the wrong CPU)
[1309763] Watchpoints don't work in device memory by Nickolai Zeldovich
[1294930] change line status on floppy by Ben Lunt
[1282033] SSE FXRESTORE not working correctly by Ondrej Palkovsky
[816979] wget generalizations by Lyndon Nerenberg
[1214886] No more pageWriteStamp / unified icache by H. Johansson
[1107945] com->socket redirection support by Andrew Backer
- these S.F. bugs were closed
[669180] win95 install : unknown SET FEATURES subcommand 0x03
[1346692] bochs 2.2.1 VGA BIOS error
[1354963] floppy in KolibriOS
[1378204] error: bochs-2.2.1, --enable-sb16, --disable-gameport
[1368412] VDE problems in BOCHS
[533446] CPU and APIC devices appear twice
[1000796] bximage fails to create image of specified size
[1170793] Quarterdeck QEMM doesn't work
[923704] Multiple opcode prefixes don't reflect Trap 13
[1166392] DocBook/documentation issues
[1368239] broken grater than 4GB size of sparse type hd image
[1365830] i386 compile breaks on paging
[427550] Incomplete IRETD implementation
[1215081] MSVC workspace STILL not fixed
[736279] Jump to Task
[1356488] FD change fail & occur error
[957615] [CPU ] prefetch: RIP > CS.limit
[1353866] not booting linux-2.6.14
[1351667] load32bitOSImage does not work with --enable-x86-debugger
[1217476] Incorrect (?) handling of segment registers in real mode
[1184711] OS2 DOS crash [2.2.pre2]
[624330] support for disks > 32GiB
[1348368] bochs 2.2.1 bximage error
[1342081] Configuration Menu option failed
[1138616] OS/2 Warp 4 hangs when booting
[1049840] mouse and video conflict
[1164570] Unable to perform Fedora Core 4 test 1 installation
[1183201] Windows 2000 (MSDN build 2150?) does not completely install
[1194284] Can't boot from CD-ROM (Windows NT)
[962969] Windows NT crashes while trying to intall them.
[1054594] WinXP install halts (redo)
[1153107] Windows XP fails with BSOD on 'vga'
[938518] Win XP installation fails
[645420] getHostMemAddr vetoed direct read
[1179985] MS XENIX: >>PANIC<< VGABIOS panic at vgabios.c, line 0
[1329600] WBINVD and INVD should flush caches and TLB
[638924] eliminate BX_USE_CONFIG_INTERFACE
[1048711] Funny behaviour with CTRL
[1288450] keyboard BIOS error
[1310706] Keyboard - about key SHIFT
[1295981] Ubuntu 5.04 Live-CD won't boot in Bochs
[879047] APIC timer behavior different before reset and after
[1188506] I still can't install the german Windows XP!
[1301847] Windows XP dosn't boot - FXRSTOR problem ?
[661259] does not boot QNX under WinX
[924412] Keyboard lock states all whacked
[681127] MIPSpro compiler (IRIX) is allergic to ^M
[1285923] BIOS keyboard handler
[516639] ATA controller revisited...
[657918] does not boot BeOS under WinX
[649245] BeOS CD locks halfway on boot
[1094385] Attachment for bug 1090339 (beos failure)
[1183196] BeOS 4.5 developer CD does not install
[1090339] BeOS fails to boot
[639484] panics when int 13 is called
[711701] divide by zero
[704295] ATAPI/BIOS call missing
[682856] hard drive problems
[627691] Cursor keys problem
[588011] keyboard not working
[542260] os/2 warp crashes with floppy handling
[1273878] SB16 doesn't work in pure DOS
[542254] OS/2 FDC driver dies
[1099610] Windows 98 SE Does not install
[875479] cr3 problem on task switch
[731423] NE2000 causing PANIC on Win2K detection
[1156155] bochs fails to boot plan9 iso
[1251979] --enable-cpu-level=3 should assume --without-fpu
[1257538] Interupt 15h 83h - set wait event interval
[658396] Panic for DR DOS emm386
[679339] /? doesn't divulge Bochs command-line syntax
[1167016] call/jump/return_protected doesn't support x86-64
[1252432] Mac OS X compile bug
[881442] Bochs 2.1 PANIC when loading DOS Turbo Pascal protected mode
[1249324] Boch2.2.1 Buffer Overfollow in void bx_local_apic_c::init ()
[1197144] 'make install' has dependency on wget
[1079595] LTR:386TSS: loading tr.limit < 103
[1244070] Compilation Error in gui/rfb.cc
[761707] CPU error when trying to start Privateer
[517281] Crash running Privateer in DOS...
-------------------------------------------------------------------------
Changes in 2.2.1 (July 8, 2005):
- Fixed several compilation warnings and errors for different platforms (Volker)
- Fixed FPU tag word restore in FXRSTOR instruction (Stanislav)
- Added missing scancodes for F11 and F12 to BIOS translation table (Volker)
- Bochs disassembler bugfixes (h.johansson)
- About 5% emulation speed improvement (h.johansson)
- Handle writing of zero to APIC timer initial count register (Stanislav)
- Enable Idle-Hack for 'TERM' GUI (h.johansson)
- Reduced overhead of BX_SHOW_IPS option to minimum. Now every simulation
could run with --enable-show-ips without significant performance
penalty. (Stanislav)
- Fixed pcipnic register access (Volker)
- Limited write support for TFTP server in 'vnet' networking module added (Volker)
- Changed some timing defaults to more useful values (Volker)
- WinXP/2003 style common controls now supported (Vitaly Vorobyov)
- Updated LGPL'd VGABIOS to version 0.5c (Volker)
- Added new BX_INSTR_HLT callback to instrumentation (Stanislav)
-------------------------------------------------------------------------
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