diff --git a/makefile b/makefile
index 7b34306e082..7bae8d1fb5b 100644
--- a/makefile
+++ b/makefile
@@ -1416,13 +1416,18 @@ macosx_x86: generate $(PROJECTDIR)/$(MAKETYPE)-osx/Makefile
 #-------------------------------------------------
 
 $(PROJECTDIR)/$(MAKETYPE)-osx-clang/Makefile: makefile $(SCRIPTS) $(GENIE)
-	$(SILENT) $(GENIE) $(PARAMS) $(TARGET_PARAMS) --gcc=osx-clang --gcc_version=$(CLANG_VERSION) $(MAKETYPE)
+	$(SILENT) $(GENIE) $(PARAMS) $(TARGET_PARAMS) --gcc=osx-clang --gcc_version=$(CLANG_VERSION) --PLATFORM=arm64 --NOASM=1 --FORCE_DRC_C_BACKEND=1 $(MAKETYPE)
 
 .PHONY: macosx_x64_clang
 macosx_x64_clang: generate $(PROJECTDIR)/$(MAKETYPE)-osx-clang/Makefile
 	$(SILENT) $(MAKE) $(MAKEPARAMS) -C $(PROJECTDIR)/$(MAKETYPE)-osx-clang config=$(CONFIG)64 precompile
 	$(SILENT) $(MAKE) $(MAKEPARAMS) -C $(PROJECTDIR)/$(MAKETYPE)-osx-clang config=$(CONFIG)64
 
+.PHONY: macosx_arm64_clang
+macosx_arm64_clang: generate $(PROJECTDIR)/$(MAKETYPE)-osx-clang/Makefile
+	$(SILENT) $(MAKE) $(MAKEPARAMS) -C $(PROJECTDIR)/$(MAKETYPE)-osx-clang config=$(CONFIG)64 precompile
+	$(SILENT) $(MAKE) $(MAKEPARAMS) -C $(PROJECTDIR)/$(MAKETYPE)-osx-clang config=$(CONFIG)64
+
 .PHONY: macosx_x86_clang
 macosx_x86_clang: generate $(PROJECTDIR)/$(MAKETYPE)-osx-clang/Makefile
 	$(SILENT) $(MAKE) $(MAKEPARAMS) -C $(PROJECTDIR)/$(MAKETYPE)-osx-clang config=$(CONFIG)32 precompile
diff --git a/scripts/genie.lua b/scripts/genie.lua
index 5310e003ed8..f714e8dc159 100644
--- a/scripts/genie.lua
+++ b/scripts/genie.lua
@@ -679,12 +679,21 @@ else
 	}
 	if _OPTIONS["targetos"]=="macosx" then
 		configuration { "x64" }
+		if (_OPTIONS["PLATFORM"]=="arm64") then
+			buildoptions {
+				"-arch arm64",
+			}
+			linkoptions {
+				"-arch arm64",
+			}
+		else
 			buildoptions {
 				"-arch x86_64",
 			}
 			linkoptions {
 				"-arch x86_64",
 			}
+		end
 		configuration { "x32" }
 			buildoptions {
 				"-arch i386",
diff --git a/scripts/toolchain.lua b/scripts/toolchain.lua
index 3eb2acf0e0b..65c00510d2d 100644
--- a/scripts/toolchain.lua
+++ b/scripts/toolchain.lua
@@ -1068,7 +1068,7 @@ function toolchain(_buildDir, _subDir)
 	configuration { "osx*", "x64" }
 		objdir (_buildDir .. "osx_clang" .. "/obj")
 		buildoptions {
-			"-m64", "-DHAVE_IMMINTRIN_H=1",
+			"-m64", "-DHAVE_IMMINTRIN_H=0", "-DSDL_DISABLE_IMMINTRIN_H=1", "-DHAVE_SSE=0"
 		}
 
 	configuration { "osx*", "x64", "Release" }
diff --git a/src/mame/drivers/cmi.cpp b/src/mame/drivers/cmi.cpp
index dc0d8a940a4..56c24f7eae1 100644
--- a/src/mame/drivers/cmi.cpp
+++ b/src/mame/drivers/cmi.cpp
@@ -161,7 +161,7 @@
 
 static const int ch_int_levels[8] =
 {
-	12 ^ 7, 8 ^ 7, 13 ^ 7, 9 ^ 7, 14 ^ 7, 10 ^ 7, 15 ^ 7, 11  ^ 7
+	12 ^ 7, 8 ^ 7, 13 ^ 7, 9 xor 7, 14 ^ 7, 10 xor 7, 15 ^ 7, 11  ^ 7
 };
 
 #define IRQ_PERRINT_LEVEL       (0 ^ 7)
diff --git a/src/mame/drivers/spg2xx_pdc.cpp b/src/mame/drivers/spg2xx_pdc.cpp
index 431a4dd9deb..b34cfcb3137 100644
--- a/src/mame/drivers/spg2xx_pdc.cpp
+++ b/src/mame/drivers/spg2xx_pdc.cpp
@@ -240,7 +240,7 @@ void spg2xx_pdc_game_state::init_pdc150t()
 
 	for (int i = 0; i < len/2; i++)
 	{
-		src[i] = bitswap<16>(src[i], 3^8,11^8,2^8,10^8,1^8,9^8,0^8,8^8, 12^8,4^8,13^8,5^8,14^8,6^8,15^8,7^8 );
+		src[i] = bitswap<16>(src[i], 3^8,11^8,2 xor 8,10 xor 8,1^8,9^8,0^8,8^8, 12^8,4^8,13^8,5^8,14^8,6^8,15^8,7^8 );
 	}
 
 #if 0