diff --git a/OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj b/OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj
index cdd3bb44f..94dbe958e 100644
--- a/OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj	
+++ b/OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj	
@@ -23,7 +23,7 @@
 		4B14978B1EE4AC5E00CE2596 /* StaticAnalyser.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4B1497891EE4AC5E00CE2596 /* StaticAnalyser.cpp */; };
 		4B14978F1EE4B4D200CE2596 /* CSZX8081.mm in Sources */ = {isa = PBXBuildFile; fileRef = 4B14978E1EE4B4D200CE2596 /* CSZX8081.mm */; };
 		4B1497921EE4B5A800CE2596 /* ZX8081.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4B1497901EE4B5A800CE2596 /* ZX8081.cpp */; };
-		4B1497951EE4B7D300CE2596 /* ZX8081Options.xib in Resources */ = {isa = PBXBuildFile; fileRef = 4B1497941EE4B7D300CE2596 /* ZX8081Options.xib */; };
+		4B1497981EE4B97F00CE2596 /* ZX8081Options.xib in Resources */ = {isa = PBXBuildFile; fileRef = 4B1497961EE4B97F00CE2596 /* ZX8081Options.xib */; };
 		4B1D08061E0F7A1100763741 /* TimeTests.mm in Sources */ = {isa = PBXBuildFile; fileRef = 4B1D08051E0F7A1100763741 /* TimeTests.mm */; };
 		4B1E85751D170228001EF87D /* Typer.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4B1E85731D170228001EF87D /* Typer.cpp */; };
 		4B1E85811D176468001EF87D /* 6532Tests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4B1E85801D176468001EF87D /* 6532Tests.swift */; };
@@ -477,7 +477,7 @@
 		4B14978E1EE4B4D200CE2596 /* CSZX8081.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = CSZX8081.mm; sourceTree = "<group>"; };
 		4B1497901EE4B5A800CE2596 /* ZX8081.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = ZX8081.cpp; path = ZX8081/ZX8081.cpp; sourceTree = "<group>"; };
 		4B1497911EE4B5A800CE2596 /* ZX8081.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; name = ZX8081.hpp; path = ZX8081/ZX8081.hpp; sourceTree = "<group>"; };
-		4B1497941EE4B7D300CE2596 /* ZX8081Options.xib */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = file.xib; path = ZX8081Options.xib; sourceTree = "<group>"; };
+		4B1497971EE4B97F00CE2596 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.xib; name = Base; path = "Clock Signal/Base.lproj/ZX8081Options.xib"; sourceTree = SOURCE_ROOT; };
 		4B1D08051E0F7A1100763741 /* TimeTests.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = TimeTests.mm; sourceTree = "<group>"; };
 		4B1E85731D170228001EF87D /* Typer.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Typer.cpp; sourceTree = "<group>"; };
 		4B1E85741D170228001EF87D /* Typer.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = Typer.hpp; sourceTree = "<group>"; };
@@ -1299,12 +1299,12 @@
 				4B8FE2211DA19FB20090D3CE /* MachinePanel.swift */,
 				4B2A332E1DB86869002876E3 /* OricOptionsPanel.swift */,
 				4B9CCDA01DA279CA0098B625 /* Vic20OptionsPanel.swift */,
-				4B1497941EE4B7D300CE2596 /* ZX8081Options.xib */,
 				4B8FE2131DA19D5F0090D3CE /* Atari2600Options.xib */,
 				4B8FE2171DA19D5F0090D3CE /* ElectronOptions.xib */,
 				4B8FE2151DA19D5F0090D3CE /* MachineDocument.xib */,
 				4B2A332B1DB86821002876E3 /* OricOptions.xib */,
 				4B8FE2191DA19D5F0090D3CE /* Vic20Options.xib */,
+				4B1497961EE4B97F00CE2596 /* ZX8081Options.xib */,
 			);
 			path = Documents;
 			sourceTree = "<group>";
@@ -2242,7 +2242,7 @@
 				4B8FE21D1DA19D5F0090D3CE /* ElectronOptions.xib in Resources */,
 				4B79E4461E3AF38600141F11 /* floppy525.png in Resources */,
 				4BC9DF451D044FCA00F44158 /* ROMImages in Resources */,
-				4B1497951EE4B7D300CE2596 /* ZX8081Options.xib in Resources */,
+				4B1497981EE4B97F00CE2596 /* ZX8081Options.xib in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -2704,6 +2704,14 @@
 /* End PBXTargetDependency section */
 
 /* Begin PBXVariantGroup section */
+		4B1497961EE4B97F00CE2596 /* ZX8081Options.xib */ = {
+			isa = PBXVariantGroup;
+			children = (
+				4B1497971EE4B97F00CE2596 /* Base */,
+			);
+			name = ZX8081Options.xib;
+			sourceTree = "<group>";
+		};
 		4B2A332B1DB86821002876E3 /* OricOptions.xib */ = {
 			isa = PBXVariantGroup;
 			children = (
diff --git a/OSBindings/Mac/Clock Signal/Base.lproj/ZX8081Options.xib b/OSBindings/Mac/Clock Signal/Base.lproj/ZX8081Options.xib
index c578c2188..b1dcdf861 100644
--- a/OSBindings/Mac/Clock Signal/Base.lproj/ZX8081Options.xib	
+++ b/OSBindings/Mac/Clock Signal/Base.lproj/ZX8081Options.xib	
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="11762" systemVersion="16E195" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" customObjectInstantitationMethod="direct">
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="12120" systemVersion="16F73" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" customObjectInstantitationMethod="direct">
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="11762"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="12120"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <objects>
@@ -12,17 +12,17 @@
         </customObject>
         <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
         <customObject id="-3" userLabel="Application" customClass="NSObject"/>
-        <window title="Options" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" hidesOnDeactivate="YES" oneShot="NO" releasedWhenClosed="NO" showsToolbarButton="NO" visibleAtLaunch="NO" frameAutosaveName="" animationBehavior="default" id="ota-g7-hOL" customClass="Vic20OptionsPanel" customModule="Clock_Signal" customModuleProvider="target">
+        <window title="Options" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" hidesOnDeactivate="YES" oneShot="NO" releasedWhenClosed="NO" showsToolbarButton="NO" visibleAtLaunch="NO" frameAutosaveName="" animationBehavior="default" id="ota-g7-hOL" customClass="MachinePanel" customModule="Clock_Signal" customModuleProvider="target">
             <windowStyleMask key="styleMask" titled="YES" closable="YES" utility="YES" nonactivatingPanel="YES" HUD="YES"/>
             <windowPositionMask key="initialPositionMask" leftStrut="YES" rightStrut="YES" topStrut="YES" bottomStrut="YES"/>
-            <rect key="contentRect" x="83" y="102" width="200" height="112"/>
+            <rect key="contentRect" x="83" y="102" width="200" height="54"/>
             <rect key="screenRect" x="0.0" y="0.0" width="1366" height="768"/>
             <view key="contentView" id="7Pv-WL-2Rq">
-                <rect key="frame" x="0.0" y="0.0" width="200" height="112"/>
+                <rect key="frame" x="0.0" y="0.0" width="200" height="54"/>
                 <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                 <subviews>
                     <button translatesAutoresizingMaskIntoConstraints="NO" id="sBT-cU-h7s">
-                        <rect key="frame" x="18" y="76" width="164" height="18"/>
+                        <rect key="frame" x="18" y="18" width="164" height="18"/>
                         <buttonCell key="cell" type="check" title="Load Tapes Quickly" bezelStyle="regularSquare" imagePosition="left" alignment="left" state="on" inset="2" id="w0l-ha-esm">
                             <behavior key="behavior" changeContents="YES" doesNotDimImage="YES" lightByContents="YES"/>
                             <font key="font" metaFont="system"/>
@@ -31,62 +31,18 @@
                             <action selector="setFastLoading:" target="ota-g7-hOL" id="me0-h2-Ga5"/>
                         </connections>
                     </button>
-                    <popUpButton verticalHuggingPriority="750" translatesAutoresizingMaskIntoConstraints="NO" id="MlB-rE-TXV" userLabel="Country Selector">
-                        <rect key="frame" x="18" y="46" width="165" height="26"/>
-                        <popUpButtonCell key="cell" type="push" bezelStyle="rounded" alignment="left" lineBreakMode="truncatingTail" borderStyle="borderAndBezel" imageScaling="proportionallyDown" inset="2" id="UIu-uz-pTu">
-                            <behavior key="behavior" lightByBackground="YES" lightByGray="YES"/>
-                            <font key="font" metaFont="menu"/>
-                            <menu key="menu" id="ajo-u0-WGk">
-                                <items>
-                                    <menuItem title="Danish Machine" id="38Y-Wm-1uo"/>
-                                    <menuItem title="European Machine" id="5ju-Z0-BDa"/>
-                                    <menuItem title="Japanese Machine" id="YlT-9e-azY"/>
-                                    <menuItem title="Swedish Machine" id="joU-Bt-XFb"/>
-                                    <menuItem title="US Machine" id="FXe-ca-cTY"/>
-                                </items>
-                            </menu>
-                        </popUpButtonCell>
-                        <connections>
-                            <action selector="setCountry:" target="ota-g7-hOL" id="YIc-QB-R1S"/>
-                        </connections>
-                    </popUpButton>
-                    <popUpButton verticalHuggingPriority="750" translatesAutoresizingMaskIntoConstraints="NO" id="0NP-x1-qH2">
-                        <rect key="frame" x="18" y="17" width="165" height="26"/>
-                        <popUpButtonCell key="cell" type="push" bezelStyle="rounded" alignment="left" lineBreakMode="truncatingTail" borderStyle="borderAndBezel" imageScaling="proportionallyDown" inset="2" id="K81-0X-C4f">
-                            <behavior key="behavior" lightByBackground="YES" lightByGray="YES"/>
-                            <font key="font" metaFont="menu"/>
-                            <menu key="menu" id="diI-80-lCf">
-                                <items>
-                                    <menuItem title="5 kb" id="ze7-6B-ois"/>
-                                    <menuItem title="8 kb" id="6C7-Iv-Wvl"/>
-                                    <menuItem title="32 kb" id="DOo-f6-OeZ"/>
-                                </items>
-                            </menu>
-                        </popUpButtonCell>
-                        <connections>
-                            <action selector="setMemorySize:" target="ota-g7-hOL" id="lep-Qi-00V"/>
-                        </connections>
-                    </popUpButton>
                 </subviews>
                 <constraints>
-                    <constraint firstItem="MlB-rE-TXV" firstAttribute="top" secondItem="sBT-cU-h7s" secondAttribute="bottom" constant="8" id="0kc-u0-05p"/>
                     <constraint firstAttribute="trailing" secondItem="sBT-cU-h7s" secondAttribute="trailing" constant="20" id="79b-2A-2c7"/>
-                    <constraint firstItem="0NP-x1-qH2" firstAttribute="leading" secondItem="7Pv-WL-2Rq" secondAttribute="leading" constant="20" id="7EF-L9-lIu"/>
-                    <constraint firstAttribute="bottom" secondItem="0NP-x1-qH2" secondAttribute="bottom" constant="20" id="Dtd-kf-4oU"/>
                     <constraint firstItem="sBT-cU-h7s" firstAttribute="top" secondItem="7Pv-WL-2Rq" secondAttribute="top" constant="20" id="E5m-wo-X92"/>
-                    <constraint firstItem="0NP-x1-qH2" firstAttribute="top" secondItem="MlB-rE-TXV" secondAttribute="bottom" constant="8" id="NbW-5e-wGB"/>
-                    <constraint firstAttribute="trailing" secondItem="0NP-x1-qH2" secondAttribute="trailing" constant="20" id="ero-D6-tJj"/>
+                    <constraint firstAttribute="bottom" secondItem="sBT-cU-h7s" secondAttribute="bottom" constant="20" id="eZe-Eu-INg"/>
                     <constraint firstItem="sBT-cU-h7s" firstAttribute="leading" secondItem="7Pv-WL-2Rq" secondAttribute="leading" constant="20" id="nDy-Xc-Ug9"/>
-                    <constraint firstItem="MlB-rE-TXV" firstAttribute="leading" secondItem="7Pv-WL-2Rq" secondAttribute="leading" constant="20" id="qb4-Lp-ZMc"/>
-                    <constraint firstAttribute="trailing" secondItem="MlB-rE-TXV" secondAttribute="trailing" constant="20" id="v18-62-uee"/>
                 </constraints>
             </view>
             <connections>
-                <outlet property="countryButton" destination="MlB-rE-TXV" id="Duc-AC-ZRO"/>
                 <outlet property="fastLoadingButton" destination="sBT-cU-h7s" id="uWa-EB-mbd"/>
-                <outlet property="memorySizeButton" destination="0NP-x1-qH2" id="qYy-3f-o94"/>
             </connections>
-            <point key="canvasLocation" x="-2" y="21"/>
+            <point key="canvasLocation" x="-2" y="-8"/>
         </window>
     </objects>
 </document>