Bug 32915 – DosBox crashes with "Unhandled CPU opcode" on supported Protected-Mode games

• Product: Gentoo Linux
• Status: RESOLVED INVALID

[Description Graeme Humphries 2003-11-06 16:20:00 UTC]

I've only got one protected-mode game that is listed as supported (UFO / X-Com,
http://dosbox.sourceforge.net/comp_list.php?showID=1334&letter=U), however it
dies, even if you follow their directions for switching the soundcard IRQ and/or
disabling sound for the game.

I tried recompiling dosbox with lower-optimization CFLAGS, but it didn't make
any difference.

Reproducible: Always
Steps to Reproduce:
1. Install X-Com
2. Run DosBox
3. Run X-Com

Actual Results:  
dosbox
CONFIG:Can't find config file dosbox.conf, using default settings
Warning: Couldn't set audio fragment size
ALSA lib seq_hw.c:446:(snd_seq_hw_open) open /dev/snd/seq failed: No such file
or directory
ALSA:Can't open sequencer
MIDI:Opened device:none
audio: Invalid argument
Exit to error: Unhandled CPU opcode

All errors except the last allow the program to continue, but when attempting to
run any of the X-Com executables, the "Unhandled CPU opcode" error kills it.


Expected Results:  
Ran the game. ;)

Portage 2.0.49-r15 (default-x86-1.4, gcc-3.2.3, glibc-2.3.2-r1,
2.4.20-pfeifer-r1_pre11)
=================================================================
System uname: 2.4.20-pfeifer-r1_pre11 i686 AMD Athlon(tm) XP 2500+
Gentoo Base System version 1.4.3.10p1
ccache version 2.3 [enabled]
ACCEPT_KEYWORDS="x86"
AUTOCLEAN="yes"
CFLAGS="-march=athlon-xp -O3 -mfpmath=sse -pipe"
CHOST="i686-pc-linux-gnu"
COMPILER="gcc3"
CONFIG_PROTECT="/etc /var/qmail/control /usr/kde/2/share/config
/usr/kde/3/share/config /usr/X11R6/lib/X11/xkb /usr/kde/3.1/share/config
/usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/config/
/usr/share/config"
CONFIG_PROTECT_MASK="/etc/gconf /etc/env.d"
CXXFLAGS="-march=athlon-xp -O3 -mfpmath=sse -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="sandbox autoaddcvs ccache fixpackages"
GENTOO_MIRRORS="http://adelie.polymtl.ca/ http://mirror.tucdemonic.org/gentoo/
http://gentoo.noved.org/ ftp://gentoo.noved.org/
http://www.gtlib.cc.gatech.edu/pub/gentoo"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="x86 oss apm avi crypt cups encode foomaticdb gif jpeg libg++ mad mikmod
mpeg ncurses nls pdflib png quicktime spell truetype xml2 xmms xv zlib directfb
gtkhtml berkdb slang readline arts tetex aalib nas bonobo svga ggi tcltk guile
mysql X sdl gpm tcpd pam libwww ssl perl python esd imlib oggvorbis gnome gtk qt
kde motif opengl gphoto2 cdr scanner 3dnow acpi acpi4linux apache2 autofs cjk
clamav dga dnd doc dv dvb dvd dvdr evo faad ffmpeg flash gb gd geoip glut
gnomedb gps gstreamer gtk2 imagemagick imap innodb ipv6 java jdepend joystick
ladcca libgda lirc md5sum memlimit mldonkeypango mmx mng nocd oav offensive pda
radeon S3TC samba slp snmp sqlite sse stencil-buffer tiff transcode type1
unicode usb v4l videos wmf xinerama xvid -alsa -gdbm video_cards_radeon"

[Comment 1 Mr. Bones. (RETIRED) 2003-11-06 16:25:07 UTC]

http://dosbox.sourceforge.net/faq.php

I direct you to question/answer 2. ;-)

You can try dosbox-cvs to see if that works better for you.  You might also
want to try the non-protected-mode version of xcom.  That one works fine
for me, if a little slow.

[Comment 2 Graeme Humphries 2003-11-06 16:38:27 UTC]

Heh, actually, I discovered that if you install Microposes 1.4 patch things
work beautifully. So, an FYI for everyone else, I guess.