Changes:
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