diff --git a/CHANGELOG b/CHANGELOG
index ca14fd52..8ef72304 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -9,6 +9,8 @@ Quake II 4.03 to 4.10
 - Reenable support for gamma via SDL, since the upstream
   bug was fixed with SDL 1.2.15. Gamma via X11 can be
   forced by defining X11GAMMA at compile time.
+- Add support for big endian architectures and enable
+  the build on SPARC64 CPUs. (by Kieron Gillespie)
 
 Quake II 4.02 to 4.03
 - Fix wrong function call in the Quake II file system.
diff --git a/Makefile b/Makefile
index b4647039..50a0c9e0 100644
--- a/Makefile
+++ b/Makefile
@@ -30,9 +30,11 @@ ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/amd64/x86_64/)
 # (You'll need some #ifdef for your unsupported  plattform!)
 ifneq ($(ARCH),i386)
 ifneq ($(ARCH),x86_64)
+ifneq ($(ARCH),sparc64)
 $(error arch $(ARCH) is currently not supported)
 endif
 endif
+endif
 
 # ----------
 
diff --git a/src/common/header/common.h b/src/common/header/common.h
index f7ad6d18..6da64c1d 100644
--- a/src/common/header/common.h
+++ b/src/common/header/common.h
@@ -32,7 +32,7 @@
 #include "shared.h"
 #include "crc.h"
 
-#define	VERSION		4.03
+#define	VERSION		4.10
 #define	BASEDIRNAME	"baseq2"
 
 #if defined __linux__
@@ -47,6 +47,8 @@
 #define CPUSTRING "i386"
 #elif defined __x86_64__
 #define CPUSTRING "amd64"
+#elif defined __sparc__
+#define CPUSTRING "sparc64"
 #else
 #define CPUSTRING "Unknown"
 #endif
diff --git a/src/common/model/cm_areaportals.c b/src/common/model/cm_areaportals.c
index d6781771..4e8e3bf5 100644
--- a/src/common/model/cm_areaportals.c
+++ b/src/common/model/cm_areaportals.c
@@ -48,8 +48,8 @@ void FloodArea_r (carea_t *area, int floodnum)
 
 	for (i=0 ; i<area->numareaportals ; i++, p++)
 	{
-		if (portalopen[p->portalnum])
-			FloodArea_r (&map_areas[p->otherarea], floodnum);
+		if (portalopen[LittleLong(p->portalnum)])
+			FloodArea_r (&map_areas[LittleLong(p->otherarea)], floodnum);
 	}
 }
 
diff --git a/src/common/model/cm_vis.c b/src/common/model/cm_vis.c
index 6977be1d..47263a04 100644
--- a/src/common/model/cm_vis.c
+++ b/src/common/model/cm_vis.c
@@ -87,7 +87,7 @@ byte *CM_ClusterPVS (int cluster)
 		memset (pvsrow, 0, (numclusters+7)>>3);
 
 	else
-		CM_DecompressVis (map_visibility + map_vis->bitofs[cluster][DVIS_PVS], pvsrow);
+		CM_DecompressVis (map_visibility + LittleLong(map_vis->bitofs[cluster][DVIS_PVS]), pvsrow);
 
 	return pvsrow;
 }
@@ -98,7 +98,7 @@ byte	*CM_ClusterPHS (int cluster)
 		memset (phsrow, 0, (numclusters+7)>>3);
 
 	else
-		CM_DecompressVis (map_visibility + map_vis->bitofs[cluster][DVIS_PHS], phsrow);
+		CM_DecompressVis (map_visibility + LittleLong(map_vis->bitofs[cluster][DVIS_PHS]), phsrow);
 
 	return phsrow;
 }
diff --git a/src/common/shared/shared.c b/src/common/shared/shared.c
index e4f22065..9d1a2974 100644
--- a/src/common/shared/shared.c
+++ b/src/common/shared/shared.c
@@ -791,8 +791,8 @@ BigShort(short l)
 
 short
 LittleShort(short l)
-{return 
-	_LittleShort(l); 
+{
+	return _LittleShort(l); 
 }
 
 int
@@ -904,6 +904,9 @@ Swap_Init(void)
 		_BigFloat = FloatNoSwap;
 		_LittleFloat = FloatSwap;
 	}
+
+	if (LittleShort(*(short *)swaptest) != 1)
+		assert("Error in the endian conversion!");
 }
 
 /*
diff --git a/src/game/savegame/savegame.c b/src/game/savegame/savegame.c
index fcc47233..743f5a2d 100644
--- a/src/game/savegame/savegame.c
+++ b/src/game/savegame/savegame.c
@@ -96,6 +96,8 @@
  #define ARCH "i386"
 #elif defined(__x86_64__)
  #define ARCH "amd64"
+#elif defined(__sparc__)
+ #define ARCH "sparc64"
 #else
  #define ARCH "unknown"
 #endif
diff --git a/src/refresh/r_main.c b/src/refresh/r_main.c
index c6105b22..3186e413 100644
--- a/src/refresh/r_main.c
+++ b/src/refresh/r_main.c
@@ -500,7 +500,7 @@ R_DrawParticles ( void )
 		qglEnable( GL_BLEND );
 		qglDisable( GL_TEXTURE_2D );
 
-		qglPointSize( gl_particle_size->value );
+		qglPointSize( LittleFloat(gl_particle_size->value) );
 
 		qglBegin( GL_POINTS );