software list items need to be *after* slot configuration so they have access to the 3.5" disk controller card, for example.

Ample/Base.lproj/Preferences.xib

@@ -49,8 +49,8 @@
                         </textFieldCell>
                         <connections>
                             <action selector="wdChanged:" target="-2" id="g1P-8l-ZXi"/>
-                            <binding destination="yvB-HG-64y" name="value" keyPath="values.MameWorkingDirectory" id="Kc9-Pc-XGU"/>
                             <binding destination="yvB-HG-64y" name="enabled" keyPath="values.UseCustomMame" id="DeG-OW-Gd2"/>
+                            <binding destination="yvB-HG-64y" name="value" keyPath="values.MameWorkingDirectory" id="Kc9-Pc-XGU"/>
                         </connections>
                     </textField>
                     <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="vTJ-Ez-c1R">
@@ -104,53 +104,11 @@
                             <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
                         </textFieldCell>
                     </textField>
-                    <popUpButton verticalHuggingPriority="750" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="PXx-2I-oSk">
-                        <rect key="frame" x="136" y="106" width="140" height="25"/>
-                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
-                        <popUpButtonCell key="cell" type="push" title="–None–" bezelStyle="rounded" alignment="left" lineBreakMode="truncatingTail" state="on" borderStyle="borderAndBezel" imageScaling="proportionallyDown" inset="2" selectedItem="lcf-aK-7x5" id="Aam-66-SaB">
-                            <behavior key="behavior" lightByBackground="YES" lightByGray="YES"/>
-                            <font key="font" metaFont="system"/>
-                            <menu key="menu" id="rvM-u0-7pI">
-                                <items>
-                                    <menuItem title="–None–" state="on" id="lcf-aK-7x5"/>
-                                    <menuItem isSeparatorItem="YES" id="eqM-0n-Mdx"/>
-                                    <menuItem title="Item 2" tag="1234" id="sbG-FP-AWT"/>
-                                </items>
-                            </menu>
-                        </popUpButtonCell>
-                        <connections>
-                            <binding destination="eFY-hy-gK0" name="content" keyPath="arrangedObjects" id="5bD-u2-QhR">
-                                <dictionary key="options">
-                                    <integer key="NSContentPlacementTag" value="1234"/>
-                                </dictionary>
-                            </binding>
-                            <binding destination="eFY-hy-gK0" name="contentValues" keyPath="arrangedObjects.name" previousBinding="5bD-u2-QhR" id="1ZH-FE-GV4">
-                                <dictionary key="options">
-                                    <integer key="NSContentPlacementTag" value="1234"/>
-                                </dictionary>
-                            </binding>
-                        </connections>
-                    </popUpButton>
-                    <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="506-Pm-ZdU">
-                        <rect key="frame" x="30" y="112" width="102" height="16"/>
-                        <autoresizingMask key="autoresizingMask"/>
-                        <textFieldCell key="cell" lineBreakMode="clipping" title="Default Settings" id="7i3-6z-dcZ">
-                            <font key="font" metaFont="system"/>
-                            <color key="textColor" name="labelColor" catalog="System" colorSpace="catalog"/>
-                            <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
-                        </textFieldCell>
-                    </textField>
                 </subviews>
             </view>
             <point key="canvasLocation" x="140" y="147"/>
         </window>
         <userDefaultsController id="KVS-Ag-1un"/>
         <userDefaultsController representsSharedInstance="YES" id="yvB-HG-64y"/>
-        <arrayController mode="entity" entityName="Bookmark" editable="NO" automaticallyPreparesContent="YES" selectsInsertedObjects="NO" avoidsEmptySelection="NO" clearsFilterPredicateOnInsertion="NO" automaticallyRearrangesObjects="YES" id="eFY-hy-gK0">
-            <connections>
-                <binding destination="XJv-1E-Jqj" name="managedObjectContext" keyPath="managedObjectContext" id="Q2L-Oe-bi6"/>
-            </connections>
-        </arrayController>
-        <customObject id="XJv-1E-Jqj" customClass="BookmarkManager"/>
     </objects>
 </document>

Ample/LaunchWindowController.m

@@ -459,11 +459,6 @@ static NSString *ShellQuote(NSString *s) {
     //[argv addObject: @"mame"];
     [argv addObject: _machine];
     
-    if (_software) {
-        NSString *name = [_softwareSet nameForSoftware: _software];
-        if (name) [argv addObject: name];
-    }
-
     // -confirm_quit?
     [argv addObject: @"-skip_gameinfo"];
 
@@ -552,6 +547,12 @@ static NSString *ShellQuote(NSString *s) {
         [argv addObjectsFromArray: tmp];
     }
 
+    // software *AFTER* slots so, eg, apple2ee has access to the superdrive.
+    if (_software) {
+        NSString *name = [_softwareSet nameForSoftware: _software];
+        if (name) [argv addObject: name];
+    }
+    
     if (_mameSpeed < 0) {
         [argv addObject: @"-nothrottle"];
     } else if (_mameSpeed > 1) {