DOS ain't dead

Bochs version 2.4.2 available (Announce)

posted by rr  , Berlin, Germany, 12.11.2009, 21:49

The Bochs Project released version 2.4.2 on 12 November 2009.

Changes:
- CPU and internal debugger
  - VMX: Implemented TPR shadow VMEXIT
  - Bugfixes for CPU emulation correctness (mostly for VMX support).
  - Bugfixes and updates for Bochs internal debugger
    - On SMP system stepN command now affects only current processor

- Memory
  - Bugfixes for > 32-bit physical address space.
  - Allow to emulate more physical memory than host actually could or would
    like to allocate. For more details look for new .bochsrc 'memory' option.

- Cleanup configure options
  - All paging related options now will be automatically determined according
    to  --enable-cpu-level option. Related configure options
        --enable-global-pages, --enable-large-pages,
        --enable-pae, --enable-mtrr
    are deprecated now. Only 1G paging option still remaining unchanged.
  - Deprecate --enable-daz configure option. Denormals-are-zeros MXCSR control
    will be enabled automatically iff SSE2 is supported (like in hardware).
  - Deprecate --enable-vme configure option, now it will be supported iff
    CPU_LEVEL >= 5 (like in hardware).

- I/O Devices
  - Bugfixes for 8254 PIT, VGA, Cirrus-Logic SVGA, USB UCHI

- SF patches applied
 [2817840] Make old_callback static by Mark Marshall
 [2874004] fix for VMWRITE instruction by Roberto Paleari
 [2873999] fix CS segment type during fast syscall invocation by Roberto Paleari
 [2864389] Debugger gui maximize on startup by Thomas Nilsen
 [2817868] Rework loops in the memory code by Mark Marshall
 [2812948] PIT bug by Derek

- these S.F. bugs were closed/fixed
 [2833504] GUI debugger bug-about GDT display
 [2872244] BIOS writes not allowed value to MTRR MSR causing #GP
 [2885383] SDL GUI memory leak
 [2872290] compilation in AIX5.3 ML10 failes
 [2867904] crash with cirrus bx_vga_c::mem_write
 [2851495] BIOS PCI returns with INT flag = 0
 [2860333] vista 64 guest STOP 109 (GDT modification)
 [2849745] disassembler bug for 3DNow and SSE opcodes
 [1066748] Wrong registers values after #RESET, #INIT
 [2836893] Regression: Windows XP installer unable to format harddrive
 [2812239] VMX: VM-Exit: Incorrect instruction length on software int
 [2814130] bx_debug lex/yacc files incorrectly generated
 [2813199] MP Tables Missing From BIOS
 [2824093] VMX exception bug
 [2811909] VMX : CS Access-rights Type.Accessed stays 0
 [2810571] Compile Errors on OSX
 [2823749] GCC regression or VM_EXIT RDMSR/WRMSR bug
 [2815929] Vista/XP64 unnecessary panic
 [2803519] Wrong example in man page bochsrc

- these S.F. feature requests were closed/implemented
  [422766] Large Memory configurations
 [1311287] Idea for a better GUI
  [455971] USB support
  [615363] debugger shortcut for repeat last cmd

Home page: http://sourceforge.net/projects/bochs/
Official announcement: Bochs 2.4.2 released
Download: http://sourceforge.net/projects/bochs/files/

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Forum admin

Complete thread:

• Bochs version 2.4.2 available - rr, 12.11.2009, 21:49 (Announce)
  • It doesn't work :-( - DOS386, 16.11.2009, 09:50
    • It doesn't work :-( - rr, 16.11.2009, 16:51
      • It doesn't work :-( - RayeR, 16.11.2009, 20:40
        • It doesn't work :-( WRMSR TripleFault - DOS386, 17.11.2009, 05:59
          • It doesn't work :-( WRMSR TripleFault - RayeR, 17.11.2009, 16:51
            • WRMSR -> SingleFault -> DoubleFault -> TripleFault -> BOOM - DOS386, 22.11.2009, 11:36