- I'm working on change log for version 1.3. Not complete yet.
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Bryce Denney
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bochs/CHANGES
135
bochs/CHANGES
@ -1,3 +1,138 @@
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Changes in 1.3.pre1 (November 17, 2001):
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- Add new log action "ask", as in these example bochsrc lines:
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panic: action=ask
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error: action=ask
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When an event occurs which is set to "ask", you get a beep and message
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on the text terminal that asks what you want to do. Choices are: continue,
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continue and disable future messages from this device, quit immediately,
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or segfault (where abort() function is available). If compiled with
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--enable-debugger, you can also choose to enter the debugger.
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- Parallel port emulation cleaned up by Volker Ruppert. See .bochsrc for
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syntax of new parport1 line in bochsrc.
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- PCI support improved by Volker Ruppert, including BIOS work.
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- the ROM BIOS now detects nonbootable disks, and prints a message on the
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console. Thanks to Cliff Hones for a patch that included the console
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display code.
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- LBA support added for hard disks. (Not tested very much.)
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- add dependencies to makefiles
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- logging code moved into a separate file, logio.cc
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- new configuration menus by Bryce Denney, which allow you to change any
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bochsrc option using text menus, then save the configuration into
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a new bochsrc file for later use. You can disable the new code using
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configure --disable-control-panel. Also you can use the command
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line arguments -nocp or -nocontrolpanel.
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- new PIT model by Greg Alexander which is much more complete than the
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old one. The new PIT is used by default, but you can switch back to
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the old one if you configure with --disable-new-pit.
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- new option --enable-slowdown-timer, by Greg Alexander, which kicks in if
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Bochs simulation time starts to run faster than real time. This helps to
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keep the Bochs clock in sync with the real clock when the CPU is mostly
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idle.
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- new option --enable-idle-hack, by Roland Mainz, which makes Bochs more
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friendly toward other processes when its CPU is idle. This only works with
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X windows.
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- new option --enable-iodebug, by Dave Poirier, which creates an I/O
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interface to the debugger. This lets you write software to be emulated
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in Bochs which can turn on instruction, register, or memory tracing
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using I/O accesses.
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- improved detection of readline in configure script
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- configure substitutes the version number into many files, instead of
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using sed in the makefile. There are still a few uses of sed remaining.
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- you can now use environment variables in bochsrc values. For example,
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diskd: file="$BOCHS_IMG/diskd.img", cyl=615, heads=6, spt=17
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- configure with --prefix=PATH works now
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- running configure from a different directory works now
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- fix [ #433759 ] virtual address checks can overflow.
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> Bochs has been crashing in some cases when you try to access data which
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> overlaps the segment limit, when the segment limit is near the 32-bit
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> boundary. The example that came up a few times is reading/writing 4 bytes
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> starting at 0xffffffff when the segment limit was 0xffffffff. The
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> condition used to compare offset+length-1 with the limit, but
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> offset+length-1 was overflowing so the comparison went wrong.
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- cmpxchg8b patch from Michael Hohmuth <hohmuth@innocent.com>
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- fixed problems in which bochs compiled with debugger measured time
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differently from bochs compiled without debugger. Also breakpoints
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in certain places such as the start of an interrupt handler were not
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recognized, and now they are.
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- apply patch from Thomas Fitzsimmons <fitzsim@cygnus.com> to fix compile
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problems when BX_SUPPORT_PAGING and BX_USE_TLB are turned off
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- fix bug introduced in 1.2.1 which caused spurious exceptions.
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See patch #439314, Exception 1 (debug) on HALT, from
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thomas.petazzoni@meridon.com.
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- add panic in ctrl_xfer32.cc where the IRET32 implementation is broken.
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This only happens if you are NOT in vm8086 mode or protected mode.
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The intent is to warn people when they are getting bad emulation, and
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encourage people to report how they got to that point.
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- applied patch from Santiago Bazerque. See this bug report:
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[ #463018 ] retf not removing parameters sometimes
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- fix bug [ #461730 ] IRETD causes problems if NT-flag is set
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reported by Peter Lammich.
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- apply patch [ #455014 ] CR0 bug in 80486, described as:
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> In the register CR0, when the bit PM is enabled, the bit 4 is 0
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> when should be 1.
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- apply patch from Mike Rieker <mrieker@o3one.org> associated with this bug
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report: [ #480422 ] gdt 'accessed' bit
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- in task_switch when it tried to ensure that the old TSS was paged in,
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it actually used the new TSS address, fixed.
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----------------------------------------------------------------------
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NOT COMPLETE: I have been working through the diffs between 1.2.1 and now,
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and I'm down to cpu/arith16.cc. Also going through the logs, down
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to dbg_main.cc.
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----------------------------------------------------------------------
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Debugger:
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- do a vga update
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- added debugger command "info fpu" that prints the FPU registers.
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- added debugger command "info ne2k" which prints all the registers
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of the NE2000 model
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- add ability to do register tracing and flag tracing (Dave Poirier)
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- instruction trace now includes time ticks
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Linux platform notes:
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- The default configuration for Linux, given in .conf.linux, now enables
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the NE2000 model.
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- RPM build process configures with --prefix=/usr so that everything is
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installed in /usr/bochs instead of /usr/local/bochs.
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- DLX Linux disk image is now installed so that only root can write it, to
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avoid security problems. When you run the bochs-dlx script, it creates a
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local copy in your home directory and then runs it.
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Amiga MorphOS platform notes:
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- Bochs now compiles and works on Amiga MorphOS. Configure with
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--with-amigaos. For AmigaOS only, see .bochsrc for use of fullscreeen and
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screenmode options. The Amiga MorphsOS is written and maintained by
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Nicholai Benalal <nicholai@chello.se>.
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- configure with --enable-cdrom should work
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BeOS platform notes:
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- Bochs compiles and works on BeOS. Configure with --with-beos.
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Bernd Thorsten Korz <bernd.korz@insidebeos.de> maintains the BeOS port.
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- configure with --enable-cdrom should work
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MacOS X platform notes:
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- Bochs now compiles and works on MacOS X. Configure with --with-carbon.
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Emmanuel Mailliard <e.rsz@libertysurf.fr> ported the Macintosh code to the
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Carbon API.
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- The MacOS X application is built using (gasp) mkdir, copy, and rez.
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Surely this is not the right way, but it works.
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Win32 platform notes:
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- The default configuration for Win32 VC++, given in .conf.win32-vcpp,
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now enables the NE2000 and renames all .cc files to .cpp. This keeps VC++
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happy but may make it hard to use CVS.
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- The default configuration for Cygwin, given in .conf.win32-cygwin, now
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enables cdrom and SB16.
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- See "new docs" on the web site for compile instructions for VC++ and Cygwin.
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- The sources include a VC++ workspace, in addition to the old "nmake"
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makefile.
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- new utility called niclist.exe which lists the names of all your network
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cards (well probably you just have one). The name must be used when
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setting up your .bochsrc.
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Changes in 1.2.1 (June 12, 2001):
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Changes in 1.2.1 (June 12, 2001):
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- more work on makefile for building RPMs
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- more work on makefile for building RPMs
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- [ #432382 ] build debian packages patch
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- [ #432382 ] build debian packages patch
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