diff --git a/BasiliskII/README b/BasiliskII/README
index 069f0272..8bce8a49 100644
--- a/BasiliskII/README
+++ b/BasiliskII/README
@@ -505,7 +505,7 @@ ether <ethernet card description>
     disable Ethernet networking.
 
   Mac OS X:
-    The "slirp" method described above nearly works.
+    The "slirp" method described above now seems to work.
 
   See the next item for an alternative way to do networking with Basilisk II.
 
diff --git a/BasiliskII/TODO b/BasiliskII/TODO
index 4e5f1eb8..f33fdcf5 100644
--- a/BasiliskII/TODO
+++ b/BasiliskII/TODO
@@ -45,6 +45,11 @@ Unix:
 - ESD is also available on Solaris
 - display progress bar during disk file creation in prefs editor
 
+Mac OS X:
+- Sound
+- Cut and paste
+- Lots of other stuff. See src/MacOSX/ToDo.html
+
 Windows
 - main_windows.cpp: undo the SDL/DIB driver trick
 - video_windows.cpp: implement with DirectX
diff --git a/BasiliskII/src/MacOSX/1_prepare_files.sh b/BasiliskII/src/MacOSX/1_prepare_files.sh
index 9641cb13..eeb26f95 100644
--- a/BasiliskII/src/MacOSX/1_prepare_files.sh
+++ b/BasiliskII/src/MacOSX/1_prepare_files.sh
@@ -6,6 +6,7 @@
 
 ln -sf ../Unix/config.guess .
 ln -sf ../Unix/config.sub   .
+ln -sf ../Unix/semaphore.h  .
 cp -pf ../Unix/sys_unix.cpp .
 cp -pf ../Unix/timer_unix.cpp .
 ln -sf ../Unix/user_strings_unix.h .
diff --git a/BasiliskII/src/MacOSX/BasiliskII.xcode/project.pbxproj b/BasiliskII/src/MacOSX/BasiliskII.xcode/project.pbxproj
index 2907a236..8d19465f 100644
--- a/BasiliskII/src/MacOSX/BasiliskII.xcode/project.pbxproj
+++ b/BasiliskII/src/MacOSX/BasiliskII.xcode/project.pbxproj
@@ -142,6 +142,7 @@
 		};
 		29B97323FDCFA39411CA2CEA = {
 			children = (
+				A63638A10964120600BE2F74,
 				29B97324FDCFA39411CA2CEA,
 				A685FF0D05C4E89D00DDBA94,
 				A685FE6A05C4E87D00DDBA94,
@@ -235,13 +236,14 @@
 				GCC_ENABLE_TRIGRAPHS = NO;
 				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
 				GCC_OPTIMIZATION_LEVEL = s;
-				GCC_PREPROCESSOR_DEFINITIONS = "HAVE_CONFIG_H _REENTRANT";
+				GCC_PREPROCESSOR_DEFINITIONS = "AQUA HAVE_CONFIG_H HAVE_SLIRP _REENTRANT DATADIR=\"\"";
 				GCC_WARN_ABOUT_MISSING_PROTOTYPES = NO;
 				GCC_WARN_FOUR_CHARACTER_CONSTANTS = NO;
 				GCC_WARN_UNKNOWN_PRAGMAS = NO;
-				HEADER_SEARCH_PATHS = "../include ../uae_cpu";
+				HEADER_SEARCH_PATHS = "../include ../uae_cpu ../Unix ../slirp";
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "$(HOME)/Applications";
+				LIBRARY_SEARCH_PATHS = ". /Volumes/Users/nigel/Programming/BasiliskII/BasiliskII/src/MacOSX";
 				OTHER_CFLAGS = "";
 				OTHER_LDFLAGS = "";
 				PRODUCT_NAME = BasiliskII;
@@ -351,7 +353,6 @@
 				A685020C05C4EF6700DDBA94,
 				A685021305C4EFDC00DDBA94,
 				A685021405C4EFDC00DDBA94,
-				A685021505C4EFDC00DDBA94,
 				A685021605C4EFDC00DDBA94,
 				A685021705C4EFDC00DDBA94,
 				A685022D05C4F04700DDBA94,
@@ -375,6 +376,7 @@
 				A685023F05C4F04700DDBA94,
 				A685024005C4F04700DDBA94,
 				A685024105C4F04700DDBA94,
+				A6C4EFBF09641353006D945B,
 			);
 			isa = PBXSourcesBuildPhase;
 			runOnlyForDeploymentPostprocessing = 0;
@@ -387,6 +389,7 @@
 				A685FF0E05C4E89D00DDBA94,
 				A685FFCE05C4E8CC00DDBA94,
 				A68500CC05C4E8DE00DDBA94,
+				A63638A20964120600BE2F74,
 			);
 			isa = PBXFrameworksBuildPhase;
 			runOnlyForDeploymentPostprocessing = 0;
@@ -423,6 +426,19 @@
 //A62
 //A63
 //A64
+		A63638A10964120600BE2F74 = {
+			isa = PBXFileReference;
+			lastKnownFileType = archive.ar;
+			path = libslirp.a;
+			refType = 2;
+			sourceTree = SOURCE_ROOT;
+		};
+		A63638A20964120600BE2F74 = {
+			fileRef = A63638A10964120600BE2F74;
+			isa = PBXBuildFile;
+			settings = {
+			};
+		};
 		A68500CB05C4E8DE00DDBA94 = {
 			isa = PBXFileReference;
 			lastKnownFileType = wrapper.framework;
@@ -995,7 +1011,6 @@
 			children = (
 				A685020E05C4EFDC00DDBA94,
 				A685020F05C4EFDC00DDBA94,
-				A685021005C4EFDC00DDBA94,
 				A685021105C4EFDC00DDBA94,
 				A685021205C4EFDC00DDBA94,
 			);
@@ -1411,15 +1426,6 @@
 			refType = 2;
 			sourceTree = SOURCE_ROOT;
 		};
-		A685021005C4EFDC00DDBA94 = {
-			fileEncoding = 30;
-			isa = PBXFileReference;
-			lastKnownFileType = sourcecode.cpp.cpp;
-			name = ether_dummy.cpp;
-			path = ../dummy/ether_dummy.cpp;
-			refType = 2;
-			sourceTree = SOURCE_ROOT;
-		};
 		A685021105C4EFDC00DDBA94 = {
 			fileEncoding = 30;
 			isa = PBXFileReference;
@@ -1450,12 +1456,6 @@
 			settings = {
 			};
 		};
-		A685021505C4EFDC00DDBA94 = {
-			fileRef = A685021005C4EFDC00DDBA94;
-			isa = PBXBuildFile;
-			settings = {
-			};
-		};
 		A685021605C4EFDC00DDBA94 = {
 			fileRef = A685021105C4EFDC00DDBA94;
 			isa = PBXBuildFile;
@@ -1785,6 +1785,7 @@
 		};
 		A685FDBA05C4E7D700DDBA94 = {
 			children = (
+				A6C4EFBE09641353006D945B,
 				A68501BA05C4ECDB00DDBA94,
 				A68501D905C4EE5100DDBA94,
 				A68501B305C4EC9500DDBA94,
@@ -1866,6 +1867,21 @@
 			settings = {
 			};
 		};
+		A6C4EFBE09641353006D945B = {
+			fileEncoding = 30;
+			isa = PBXFileReference;
+			lastKnownFileType = sourcecode.cpp.cpp;
+			name = ether_unix.cpp;
+			path = ../Unix/ether_unix.cpp;
+			refType = 2;
+			sourceTree = SOURCE_ROOT;
+		};
+		A6C4EFBF09641353006D945B = {
+			fileRef = A6C4EFBE09641353006D945B;
+			isa = PBXBuildFile;
+			settings = {
+			};
+		};
 	};
 	rootObject = 29B97313FDCFA39411CA2CEA;
 }
diff --git a/BasiliskII/src/MacOSX/Makefile.in b/BasiliskII/src/MacOSX/Makefile.in
index e9a4f92c..21f74d67 100644
--- a/BasiliskII/src/MacOSX/Makefile.in
+++ b/BasiliskII/src/MacOSX/Makefile.in
@@ -18,6 +18,7 @@ BLESS = @BLESS@
 IDE = @IDE@
 PROJECT = @PROJECT@
 IDEARGS = @IDEARGS@
+SLIRP_SRCS = @SLIRP_SRCS@
 
 ## Files
 OBJ_DIR = build
@@ -29,7 +30,7 @@ GENEMUS = cpuemu1.cpp cpuemu2.cpp cpuemu3.cpp cpuemu4.cpp \
 
 # Symlinks to, or copies of, files in other directories
 GENLINK = README.txt INSTALL.txt install-sh \
-	  Darwin config.guess config.sub \
+	  Darwin config.guess config.sub semaphore.h \
 	  sys_unix.cpp timer_unix.cpp user_strings_unix.h
 
 GEN  = $(GENEMUS) $(GENSRCS)
@@ -39,10 +40,16 @@ SRCS =  BasiliskII.icns Controller.h Controller.mm Credits.html \
 	NNThread.h NNThread.m PrefsEditor.h PrefsEditor.mm \
 	ToDo.html Versions.html \
 	audio_macosx.mm extfs_macosx.mm macos_util_macosx.h main_macosx.h \
-	main_macosx.mm misc_macosx.h misc_macosx.mm nowrite.icns prefs_macosx.cpp \
-	sysdeps.h video_macosx.mm video_macosx.h
+	main_macosx.mm misc_macosx.h misc_macosx.mm nowrite.icns \
+	prefs_macosx.cpp sysdeps.h video_macosx.mm video_macosx.h
+
+SLIRP_OBJ = $(patsubst ../slirp/%.c, build/%.o, $(SLIRP_SRCS))
+SLIRP_LIB = libslirp.a
+
 APP = $(OBJ_DIR)/BasiliskII.app
 
+DEPS = $(OBJ_DIR) $(GEN) $(SLIRP_LIB) $(SRCS)
+
 ## Rules
 
 .PHONY: mostlyclean clean distclean depend dep
@@ -51,7 +58,7 @@ APP = $(OBJ_DIR)/BasiliskII.app
 
 all: $(APP)
 
-ide: $(OBJ_DIR) $(GEN) $(SRCS)
+ide: $(DEPS)
 	open $(PROJECT)
 
 test: $(APP)
@@ -61,7 +68,7 @@ $(OBJ_DIR)::
 	@[ -d $(OBJ_DIR) ] || mkdir $(OBJ_DIR) > /dev/null 2>&1
 
 
-$(APP): $(OBJ_DIR) $(GEN) $(SRCS)
+$(APP): $(DEPS)
 	$(IDE) -buildstyle Deployment $(IDEARGS) \
 		&& $(BLESS) $(APP)/Contents/MacOS/BasiliskII \
 		|| rm -fr $(APP)
@@ -77,6 +84,7 @@ mostlyclean:
 	rm -fr English.lproj/*~* $(OBJ_DIR)/* core* *.core *~ *.bak
 
 clean: mostlyclean
+	rm -f $(SLIRP_LIB)
 	rm -f $(GEN)
 	rm -f cpudefs.cpp cputmp*.s cpufast*.s cpustbl.cpp
 
@@ -124,5 +132,12 @@ cpufast.s: cpuemu.s $(OBJ_DIR)/cpuopti
 cpuemu.s: cpuemu.cpp
 	$(CXX) $(CPPFLAGS) $(DEFS) -S $(CXXFLAGS) $< -o $@
 
+
+$(SLIRP_OBJ) : build/%.o : ../slirp/%.c
+	$(CC) -I../slirp $(CPPFLAGS) $(DEFS) $(CFLAGS) $(LDFLAGS) -c $< -o $@
+
+$(SLIRP_LIB) : $(SLIRP_OBJ)
+	libtool -static -o libslirp.a build/*.o
+
 #-------------------------------------------------------------------------
 # DO NOT DELETE THIS LINE -- make depend depends on it.
diff --git a/BasiliskII/src/MacOSX/ToDo.html b/BasiliskII/src/MacOSX/ToDo.html
index 2d209eb8..7a5111ed 100644
--- a/BasiliskII/src/MacOSX/ToDo.html
+++ b/BasiliskII/src/MacOSX/ToDo.html
@@ -15,6 +15,9 @@ Bugs:
 <LI>Status of 'dd' command is not always correct. (If it runs out of space,
 	an error about file not found is printed?)</LI>
 <LI>The Snapshot function is currently broken.</LI>
+<LI>The EtherNet thread doesn't seem to terminate, which means that the
+	emulation doesn't shutdown cleanly. Not sure if this is just a
+	10.3 thing, or if it is something about my NSThread classes.</LI>
 </UL>
 Untested:
 <UL>
@@ -24,7 +27,7 @@ Untested:
 Unimplemented:
 <UL>
 <LI>CD audio stuff. I am still trying to get this to work</LI>
-<LI>Ethernet</LI>
+<LI>Cut and paste between emulator and OS X</LI>
 <LI>Floppy stuff. If a floppy is mounted by the OS X Finder,
 	it is busy and cannot be opened by the emulator</LI>
 <LI>Interrupt function for emulator</LI>