diff --git a/src/main/java/jace/hardware/CardMockingboard.java b/src/main/java/jace/hardware/CardMockingboard.java
index 701c80e..59d5247 100644
--- a/src/main/java/jace/hardware/CardMockingboard.java
+++ b/src/main/java/jace/hardware/CardMockingboard.java
@@ -162,10 +162,10 @@ public class CardMockingboard extends Card {
         if (e.getType().isRead()) {
             int val = controller.readRegister(register & 0x0f);
             e.setNewValue(val);
-            if (DEBUG) System.out.println("Chip " + chip + " Read "+Integer.toHexString(register & 0x0f)+" == "+val);
+            // if (DEBUG) System.out.println("Chip " + chip + " Read "+Integer.toHexString(register & 0x0f)+" == "+val);
         } else {
             controller.writeRegister(register & 0x0f, e.getNewValue());
-            if (DEBUG) System.out.println("Chip " + chip + " Write "+Integer.toHexString(register & 0x0f)+" == "+e.getNewValue());
+            // if (DEBUG) System.out.println("Chip " + chip + " Write "+Integer.toHexString(register & 0x0f)+" == "+e.getNewValue());
         }
         // Any firmware access will reset the idle counter and wake up the card, this allows the timers to start running again
         // Games such as "Skyfox" use the timer to detect if the card is present.
diff --git a/src/main/java/jace/hardware/mockingboard/TimedGenerator.java b/src/main/java/jace/hardware/mockingboard/TimedGenerator.java
index 1e94c71..b17548b 100644
--- a/src/main/java/jace/hardware/mockingboard/TimedGenerator.java
+++ b/src/main/java/jace/hardware/mockingboard/TimedGenerator.java
@@ -51,7 +51,7 @@ public class TimedGenerator {
     }
 
     public void setPeriod(int _period) {
-        period = _period > 0 ? _period : 1;
+        period = _period;
         clocksPerPeriod = (period * stepsPerCycle());
         // set counter back... necessary?
 //        while (clocksPerPeriod > period) {
@@ -60,13 +60,12 @@ public class TimedGenerator {
     }
 
     protected int updateCounter() {
-        counter += cyclesPerSample;
-        int numStateChanges = 0;
-        // Skyfox and Genius use a period value of 001 for silence instead of setting volume to 0.
-        if (period == 1) {
-            counter = 0;
+        // Period == 0 means the generator is off
+        if (period <= 1 || clocksPerPeriod <= 1) {
             return 0;
         }
+        counter += cyclesPerSample;
+        int numStateChanges = 0;
         while (counter >= clocksPerPeriod) {
             counter -= clocksPerPeriod;
             numStateChanges++;
@@ -76,6 +75,6 @@ public class TimedGenerator {
 
     public void reset() {
         counter = 0;
-        period = 1;
+        period = 0;
     }
 }
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