diff --git a/docs/examples/core-set/puppy-labview.md b/docs/examples/core-set/puppy-labview.md
index 27951f6a..d45c0504 100644
--- a/docs/examples/core-set/puppy-labview.md
+++ b/docs/examples/core-set/puppy-labview.md
@@ -300,15 +300,56 @@ function HNG() {
 }
 
 function PPP() {
-    // TODO    
+    NS = false;
+    IS(2);
+    UP();
+    loops.pause(100)
+    motors.largeA.setSpeed(-30, 70, MoveUnit.Degrees);
+    loops.pause(800);
+    music.playSoundEffect(sounds.mechanicalHorn1);
+    loops.pause(1000);
+    for(let i = 0; i < 3; ++i) {
+        motors.largeA.setSpeed(-30, 20, MoveUnit.Degrees);
+        motors.largeA.setSpeed(30, 20, MoveUnit.Degrees);
+    }
+    motors.largeA.setSpeed(30, 70, MoveUnit.Degrees);
+    F_C = 1;
+    CS(0);
 }
 
 function HPY() {
-    // TODO    
+    IS(8)
+    MHT(0);
+    motors.largeAD.setSpeed(10, 0.8, MoveUnit.Seconds);
+    for(let i = 0; i < 3; ++i) {
+        music.playSoundEffect(sounds.animalsDogBark1);
+        motors.largeAD.setSpeed(-100, 0.2, MoveUnit.Seconds);
+        loops.pause(300)
+        motors.largeAD.setSpeed(10, 0.3, MoveUnit.Seconds)
+    }
+    loops.pause(500);
+    music.stopAllSounds();
+    DN();
+    RST();
+}
+
+function STL() {
+    UP();
+    motors.largeAD.setSpeed(-20, 60, MoveUnit.Degrees);
+    music.playSoundEffect(sounds.animalsDogWhine);
+    motors.largeAD.setSpeed(20, 60, MoveUnit.Degrees);
 }
 
 function WKU() {
-
+    let stateC = false;
+    IS(5);
+    music.playSoundEffect(sounds.animalsDogWhine)
+    MHT(0)
+    DN()
+    STL()
+    loops.pause(1000);
+    UP()
+    CS(0;)
 }
 
 DN();
diff --git a/sim/dalboard.ts b/sim/dalboard.ts
index 6111f90d..5cda54b6 100644
--- a/sim/dalboard.ts
+++ b/sim/dalboard.ts
@@ -97,28 +97,21 @@ namespace pxsim {
             return this.brickNode;
         }
 
-        motorUsed(port: number, large: boolean) {
+        motorUsed(ports: number, large: boolean): boolean {
             for (let i = 0; i < DAL.NUM_OUTPUTS; ++i) {
                 const p = 1 << i;
-                if (port & p) {
-                    const motorPort = this.motorMap[p];
-                    if (!this.outputNodes[motorPort])
-                        this.outputNodes[motorPort] = new MotorNode(motorPort, large);
-                }
-            }
-        }
-
-        hasMotor(port: number) {
-            for (let i = 0; i < DAL.NUM_OUTPUTS; ++i) {
-                const p = 1 << i;
-                if (port & p) {
+                if (ports & p) {
                     const motorPort = this.motorMap[p];
                     const outputNode = this.outputNodes[motorPort];
-                    if (outputNode)
-                        return true;
+                    if (!outputNode) {
+                        this.outputNodes[motorPort] = new MotorNode(motorPort, large);
+                        continue;
+                    }
+                    if (outputNode && outputNode.isLarge() != large)
+                        return false;
                 }
             }
-            return false;
+            return true;
         }
 
         getMotor(port: number, large?: boolean): MotorNode[] {
diff --git a/sim/state/input.ts b/sim/state/input.ts
index a025e34e..4d99f624 100644
--- a/sim/state/input.ts
+++ b/sim/state/input.ts
@@ -3,15 +3,23 @@
 import lf = pxsim.localization.lf;
 
 namespace pxsim.motors {
-
-    export function __motorUsed(port: number, large: boolean) {
-        //console.log("MOTOR INIT " + port);
-        if (!ev3board().hasMotor(port)) {
-            ev3board().motorUsed(port, large);
-            runtime.queueDisplayUpdate();
-        } else {
-            U.userError(`${lf("Multiple motors are connected to Port")} ${String.fromCharCode('A'.charCodeAt(0) + ev3board().motorMap[port])}`);
+    function portsToString(out: number): string {
+        let r = "";
+        for (let i = 0; i < DAL.NUM_OUTPUTS; ++i) {
+            if (out & (1 << i)) {
+                if (r.length > 0) r += "+";
+                r += "ABCD"[i];
+            }
         }
+        return r;
+    }
+
+    export function __motorUsed(ports: number, large: boolean) {
+        //console.log("MOTOR INIT " + port);
+        if (ev3board().motorUsed(ports, large))
+            runtime.queueDisplayUpdate();
+        else
+            U.userError(`${lf("Multiple motors are connected to Port")} ${portsToString(ports)}`);
     }
 }
 
diff --git a/sim/state/motornode.ts b/sim/state/motornode.ts
index 745f046f..7a939f33 100644
--- a/sim/state/motornode.ts
+++ b/sim/state/motornode.ts
@@ -70,6 +70,10 @@ namespace pxsim {
             this.rotationsPerMilliSecond = (large ? 170 : 250) / 60000;
         }
 
+        isLarge(): boolean {
+            return this.id == NodeType.LargeMotor;
+        }
+
         setPolarity(polarity: number) {
             // Either 1 or 255 (reverse)
             /*