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- I'm working on change log for version 1.3. Not complete yet.

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Bryce Denney 2001-12-05 17:37:08 +00:00
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Changes in 1.3.pre1 (November 17, 2001):
- Add new log action "ask", as 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 work.
- the ROM BIOS now detects nonbootable disks, and prints a message on the
console. Thanks to Cliff Hones for a patch that included the console
display code.
- LBA support added for hard disks. (Not tested very much.)
- add dependencies to makefiles
- logging code moved into a separate file, logio.cc
- 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.
- 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.
- 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-idle-hack, by Roland Mainz, which makes Bochs more
friendly toward other processes when its CPU is idle. This only works with
X windows.
- 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
- 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>
- fixed problems in which bochs compiled with debugger measured time
differently from bochs compiled without debugger. Also breakpoints
in certain places such as the start of an interrupt handler were not
recognized, and now they are.
- 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.
- applied 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.
----------------------------------------------------------------------
NOT COMPLETE: I have been working through the diffs between 1.2.1 and now,
and I'm down to cpu/arith16.cc. Also going through the logs, down
to dbg_main.cc.
----------------------------------------------------------------------
Debugger:
- do a vga update
- added debugger command "info fpu" that prints the 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)
- instruction trace now includes time ticks
Linux platform notes:
- 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.
Amiga MorphOS platform notes:
- 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>.
- configure with --enable-cdrom should work
BeOS platform notes:
- Bochs compiles and works on BeOS. Configure with --with-beos.
Bernd Thorsten Korz <bernd.korz@insidebeos.de> maintains the BeOS port.
- configure with --enable-cdrom should work
MacOS X platform notes:
- 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.
Win32 platform notes:
- 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.
- new utility called niclist.exe which lists the names of all your network
cards (well probably you just have one). The name must be used when
setting up your .bochsrc.
Changes in 1.2.1 (June 12, 2001):
- more work on makefile for building RPMs
- [ #432382 ] build debian packages patch