diff --git a/bochs/configure.in b/bochs/configure.in
index 78d1cfb1a..66eece583 100644
--- a/bochs/configure.in
+++ b/bochs/configure.in
@@ -1782,6 +1782,16 @@ if test "$soundcard_present" = 1; then
       AC_MSG_RESULT(dummy)
       ;;
   esac
+  AC_MSG_CHECKING(for additional sound lowlevel modules)
+  if test "$with_sdl" = yes; then
+    SOUNDLOW_OBJS="$SOUNDLOW_OBJS soundsdl.o"
+    if test "$bx_plugins" = 1; then
+      SOUND_LINK_OPTS="$SOUND_LINK_OPTS `sdl-config --libs`"
+    fi
+    AC_MSG_RESULT(sdl)
+  else
+    AC_MSG_RESULT(none)
+  fi
   if test "$bx_plugins" = 0; then
     SOUND_LIB_VAR='iodev/sound/libsound.a'
     AC_SUBST(SOUND_LIB_VAR)
diff --git a/bochs/iodev/sound/es1370.cc b/bochs/iodev/sound/es1370.cc
index 272a299f8..cc09dd419 100644
--- a/bochs/iodev/sound/es1370.cc
+++ b/bochs/iodev/sound/es1370.cc
@@ -2,7 +2,7 @@
 // $Id$
 /////////////////////////////////////////////////////////////////////////
 //
-//  Copyright (C) 2011  The Bochs Project
+//  Copyright (C) 2011-2012  The Bochs Project
 //
 //  This library is free software; you can redistribute it and/or
 //  modify it under the terms of the GNU Lesser General Public
@@ -35,6 +35,7 @@
 #include "soundlnx.h"
 #include "soundwin.h"
 #include "soundosx.h"
+#include "soundsdl.h"
 
 #define LOG_THIS theES1370Device->
 
diff --git a/bochs/iodev/sound/sb16.cc b/bochs/iodev/sound/sb16.cc
index ff5ab86fa..5d309dca4 100644
--- a/bochs/iodev/sound/sb16.cc
+++ b/bochs/iodev/sound/sb16.cc
@@ -36,6 +36,7 @@
 #include "soundlnx.h"
 #include "soundwin.h"
 #include "soundosx.h"
+#include "soundsdl.h"
 
 #define LOG_THIS theSB16Device->
 
diff --git a/bochs/iodev/sound/soundmod.cc b/bochs/iodev/sound/soundmod.cc
index 0bf2e31d4..9982a9b50 100644
--- a/bochs/iodev/sound/soundmod.cc
+++ b/bochs/iodev/sound/soundmod.cc
@@ -2,7 +2,7 @@
 // $Id$
 /////////////////////////////////////////////////////////////////////////
 //
-//  Copyright (C) 2011  The Bochs Project
+//  Copyright (C) 2011-2012  The Bochs Project
 //
 //  This library is free software; you can redistribute it and/or
 //  modify it under the terms of the GNU Lesser General Public
@@ -33,7 +33,7 @@
 #include "soundlnx.h"
 #include "soundosx.h"
 #include "soundwin.h"
-//#include "soundsdl.h"
+#include "soundsdl.h"
 
 #ifndef WIN32
 #include <pthread.h>
@@ -72,7 +72,7 @@ void* bx_soundmod_ctl_c::init_module(const char *type, logfunctions *device)
 {
   if (!strcmp(type, "default")) {
     soundmod = new BX_SOUND_LOWLEVEL_C(device);
-#if 0
+#if BX_WITH_SDL
   } else if (!strcmp(type, "sdl")) {
     soundmod = new bx_sound_sdl_c(device);
 #endif
diff --git a/bochs/iodev/sound/soundmod.h b/bochs/iodev/sound/soundmod.h
index bcdc2c125..91171d1ae 100644
--- a/bochs/iodev/sound/soundmod.h
+++ b/bochs/iodev/sound/soundmod.h
@@ -2,7 +2,7 @@
 // $Id$
 /////////////////////////////////////////////////////////////////////////
 //
-//  Copyright (C) 2011  The Bochs Project
+//  Copyright (C) 2011-2012  The Bochs Project
 //
 //  This library is free software; you can redistribute it and/or
 //  modify it under the terms of the GNU Lesser General Public
diff --git a/bochs/iodev/sound/soundsdl.cc b/bochs/iodev/sound/soundsdl.cc
new file mode 100644
index 000000000..6f4b9dd48
--- /dev/null
+++ b/bochs/iodev/sound/soundsdl.cc
@@ -0,0 +1,177 @@
+/////////////////////////////////////////////////////////////////////////
+// $Id$
+/////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2012  The Bochs Project
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2 of the License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+
+// Lowlevel sound output support for SDL written by Volker Ruppert
+
+#include "iodev.h"
+#include "soundmod.h"
+#include "soundsdl.h"
+
+#if BX_WITH_SDL && BX_SUPPORT_SOUNDLOW
+
+#define LOG_THIS device->
+
+#if BX_WITH_SDL
+#include <SDL.h>
+#endif
+
+#define BX_SOUND_SDL_BUFSIZE  BX_SOUNDLOW_WAVEPACKETSIZE * 8
+
+static struct {
+  int iptr;
+  int optr;
+  Bit8u data[BX_SOUND_SDL_BUFSIZE];
+} audio_buffer;
+
+
+bx_sound_sdl_c::bx_sound_sdl_c(logfunctions *dev)
+    :bx_sound_lowlevel_c(dev)
+{
+  WaveOpen = 0;
+  if (SDL_InitSubSystem(SDL_INIT_AUDIO)) {
+    BX_PANIC(("Initialization of sound output module 'sdl' failed"));
+  } else {
+    BX_INFO(("Sound output module 'sdl' initialized"));
+  }
+}
+
+bx_sound_sdl_c::~bx_sound_sdl_c()
+{
+  SDL_QuitSubSystem(SDL_INIT_AUDIO);
+}
+
+
+int bx_sound_sdl_c::openwaveoutput(const char *wavedev)
+{
+  WaveOpen = 1;
+  return BX_SOUNDLOW_OK;
+}
+
+void sdl_callback(void *unused, Bit8u *stream, int len)
+{
+  int amount = audio_buffer.iptr - audio_buffer.optr;
+  if (amount < 0) {
+    amount += BX_SOUND_SDL_BUFSIZE;
+  }
+  if (amount > len) {
+    amount = len;
+  }
+  int tmplen = BX_SOUND_SDL_BUFSIZE - audio_buffer.optr;
+  if (amount <= tmplen) {
+    SDL_MixAudio(stream, &audio_buffer.data[audio_buffer.optr], amount, SDL_MIX_MAXVOLUME);
+    audio_buffer.optr += amount;
+  } else {
+    SDL_MixAudio(stream, &audio_buffer.data[audio_buffer.optr], tmplen, SDL_MIX_MAXVOLUME);
+    amount -= tmplen;
+    SDL_MixAudio(stream, &audio_buffer.data[0], amount, SDL_MIX_MAXVOLUME);
+    audio_buffer.optr = amount;
+  }
+}
+
+int bx_sound_sdl_c::startwaveplayback(int frequency, int bits, bx_bool stereo, int format)
+{
+  SDL_AudioSpec fmt;
+  int signeddata = format & 1;
+
+  BX_DEBUG(("startwaveplayback(%d, %d, %d, %x)", frequency, bits, stereo, format));
+  fmt.freq = frequency;
+
+  if (bits == 16) {
+    if (signeddata == 1)
+      fmt.format = AUDIO_S16;
+    else
+      fmt.format = AUDIO_U16;
+  } else if (bits == 8) {
+    if (signeddata == 1)
+      fmt.format = AUDIO_S8;
+    else
+      fmt.format = AUDIO_U8;
+  } else
+    return BX_SOUNDLOW_ERR;
+
+  fmt.channels = stereo + 1;
+  fmt.samples = frequency / 10;
+  fmt.callback = sdl_callback;
+  fmt.userdata = NULL;
+  if (SDL_OpenAudio(&fmt, NULL) < 0) {
+    BX_PANIC(("SDL_OpenAudio() failed"));
+    return BX_SOUNDLOW_ERR;
+  }
+  audio_buffer.iptr = 0;
+  audio_buffer.optr = 0;
+  return BX_SOUNDLOW_OK;
+}
+
+int bx_sound_sdl_c::waveready()
+{
+  int size;
+
+  if (WaveOpen) {
+    size = audio_buffer.optr - audio_buffer.iptr;
+    if (size <= 0) {
+      size += BX_SOUND_SDL_BUFSIZE;
+    }
+    if (size < BX_SOUNDLOW_WAVEPACKETSIZE) {
+      return BX_SOUNDLOW_ERR;
+    } else {
+      return BX_SOUNDLOW_OK;
+    }
+  } else {
+    return BX_SOUNDLOW_ERR;
+  }
+}
+
+int bx_sound_sdl_c::sendwavepacket(int length, Bit8u data[])
+{
+  int ret = BX_SOUNDLOW_OK;
+  int tmpsize;
+
+  SDL_PauseAudio(1);
+  if (waveready() == BX_SOUNDLOW_OK) {
+    if ((audio_buffer.iptr + length) > BX_SOUND_SDL_BUFSIZE) {
+      tmpsize = BX_SOUND_SDL_BUFSIZE - audio_buffer.iptr;
+      memcpy(audio_buffer.data+audio_buffer.iptr, data, tmpsize);
+      memcpy(audio_buffer.data, data+tmpsize, length-tmpsize);
+      audio_buffer.iptr = length-tmpsize;
+    } else {
+      memcpy(audio_buffer.data+audio_buffer.iptr, data, length);
+      audio_buffer.iptr += length;
+    }
+  } else {
+    BX_ERROR(("SDL: audio buffer overflow"));
+    ret = BX_SOUNDLOW_ERR;
+  }
+  SDL_PauseAudio(0);
+  return ret;
+}
+
+int bx_sound_sdl_c::stopwaveplayback()
+{
+  SDL_CloseAudio();
+  return BX_SOUNDLOW_OK;
+}
+
+int bx_sound_sdl_c::closewaveoutput()
+{
+  WaveOpen = 0;
+  return BX_SOUNDLOW_OK;
+}
+
+#endif  // BX_WITH_SDL
diff --git a/bochs/iodev/sound/soundsdl.h b/bochs/iodev/sound/soundsdl.h
new file mode 100644
index 000000000..11570ee8e
--- /dev/null
+++ b/bochs/iodev/sound/soundsdl.h
@@ -0,0 +1,46 @@
+/////////////////////////////////////////////////////////////////////////
+// $Id$
+/////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2012  The Bochs Project
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2 of the License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+
+// Lowlevel sound output support for SDL written by Volker Ruppert
+
+
+#if BX_WITH_SDL
+
+#include "bochs.h"
+
+class bx_sound_sdl_c : public bx_sound_lowlevel_c {
+public:
+  bx_sound_sdl_c(logfunctions *dev);
+  virtual ~bx_sound_sdl_c();
+
+  virtual int get_type() {return BX_SOUNDLOW_SDL;}
+
+  virtual int    waveready();
+
+  virtual int    openwaveoutput(const char *wavedev);
+  virtual int    startwaveplayback(int frequency, int bits, bx_bool stereo, int format);
+  virtual int    sendwavepacket(int length, Bit8u data[]);
+  virtual int    stopwaveplayback();
+  virtual int    closewaveoutput();
+private:
+  bx_bool WaveOpen;
+};
+
+#endif  // BX_WITH_SDL