Modern operating systems does not use BIOS much. DOS use BIOS a lot. SeaBIOS is a BIOS, so should be able to run operating systems that use BIOS. So I think DOS is something that ought to run/work on SeaBIOS if SeaBIOS implements BIOS correctly.
Shouldn't DOS be some milestone for SeaBIOS? Perhaps there ought to be a BIOS testsuite to test BIOS compliance. On Wed, Feb 29, 2012 at 10:19 AM, Daniel P. Berrange <berra...@redhat.com> wrote: > On Wed, Feb 29, 2012 at 03:45:13AM -0500, Kevin O'Connor wrote: >> On Mon, Feb 27, 2012 at 04:25:09PM +0100, Jan Kiszka wrote: >> > On 2012-02-27 10:51, Daniel P. Berrange wrote: >> > > I'm seeing current QEMU GIT fail to boot MS-Dos 6.22 with the following >> > > crash: >> > > >> > > # qemu-system-x86_64 -fda ~/MS-DOS\ 6.22.img -m 1 -curses >> >> Does the error persist when run with "-m 2"? If more memory fixes the >> issue, then it is likely already fixed in upstream (commit 890d9851). >> The bugs fixed in that commit are null pointer derefernce errors - in >> SeaBIOS, a write to "NULL" actually alters the memory at address 0, >> which can corrupt the interrupt table - these can lead to >> unpredictable errors, as the timing between when an irq fires and when >> the corruption occurs can vary. DOS might overwrite the irq entries >> with its own settings, and thus depending on timing may cover up the >> error. In short, I wouldn't assume the problem is the toolchain. > > The error occurs no matter what '-m XX' setting I give it. I did a git > bisect across a Seabios GIT from master down torel-1.6.3.1 and could > not reproduce it with any BIOS I built myself. Hence the only conclusion > I could come to is that the QEMU binary was broken in some way. > > Regards, > Daniel > -- > |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| > |: http://libvirt.org -o- http://virt-manager.org :| > |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| > |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :| > > _______________________________________________ > SeaBIOS mailing list > seab...@seabios.org > http://www.seabios.org/mailman/listinfo/seabios