diff --git a/LUFA/DoxygenPages/LUFAPoweredProjects.txt b/LUFA/DoxygenPages/LUFAPoweredProjects.txt
index e689bc91d8..e8ff40b632 100644
--- a/LUFA/DoxygenPages/LUFAPoweredProjects.txt
+++ b/LUFA/DoxygenPages/LUFAPoweredProjects.txt
@@ -192,10 +192,11 @@
  *  \li Elektor Magazine, "USB is Cool/Sucks" by Jerry Jacobs and Chris Vossen (minor mention), January 2010 Issue
  *  \li Elektor Magazine, "20 x Open Source" by Jens Nickel, March 2010 Issue
  *  \li Circuit Cellar Magazine, "Advanced USB Design Debugging" by Collin O'Flynn, August 2010 Issue
+ *  \li "Some Assembly Required: Assembly Language Programming with the AVR Microcontroller" by Timothy S. Margush
  *  \li Elektor Magazine, "Taming the Beast (2)" by Clemens Valens/Raymond Vermeulen, January 2013 Issue
  *
  *  \section Sec_LUFANotableMentions Other Notable Mentions of LUFA
- *  The following are non-magazine but notable mentions of the LUFA library.
+ *  The following are non-print but notable mentions of the LUFA library.
  *
  *  \li Adafruit "Ask an Engineer", 7th November 2010
  *  \li Arduino 2010 Keynote speech
diff --git a/LUFA/Drivers/Board/XMEGA/A3BU_XPLAINED/LEDs.h b/LUFA/Drivers/Board/XMEGA/A3BU_XPLAINED/LEDs.h
index 8487daa458..925bd2669f 100644
--- a/LUFA/Drivers/Board/XMEGA/A3BU_XPLAINED/LEDs.h
+++ b/LUFA/Drivers/Board/XMEGA/A3BU_XPLAINED/LEDs.h
@@ -140,14 +140,21 @@
 
 			static inline void LEDs_SetAllLEDs(const uint8_t LEDMask)
 			{
-				PORTR_OUT = ((PORTR.OUT & ~LEDS_PORTR_LEDS) | (LEDMask & LEDS_PORTR_LEDS));
-				PORTD_OUT = ((PORTD.OUT & ~LEDS_PORTD_LEDS) | (LEDMask & LEDS_PORTD_LEDS));
+				PORTR_OUTCLR = LEDS_PORTR_LEDS;
+				PORTD_OUTCLR = LEDS_PORTD_LEDS;
+
+				PORTR_OUTSET = (LEDMask & LEDS_PORTR_LEDS);
+				PORTD_OUTSET = (LEDMask & LEDS_PORTD_LEDS);
 			}
 
-			static inline void LEDs_ChangeLEDs(const uint8_t LEDMask, const uint8_t ActiveMask)
+			static inline void LEDs_ChangeLEDs(const uint8_t LEDMask,
+			                                   const uint8_t ActiveMask)
 			{
-				PORTR_OUT = (PORTR.OUT & ~(LEDMask & LEDS_PORTR_LEDS)) | (Active & LEDS_PORTR_LEDS);
-				PORTD_OUT = (PORTD.OUT & ~(LEDMask & LEDS_PORTD_LEDS)) | (Active & LEDS_PORTD_LEDS);
+				PORTR_OUTCLR = (LEDMask & LEDS_PORTR_LEDS);
+				PORTD_OUTCLR = (LEDMask & LEDS_PORTD_LEDS);
+
+				PORTR_OUTSET = (ActiveMask & LEDS_PORTR_LEDS);
+				PORTD_OUTSET = (ActiveMask & LEDS_PORTD_LEDS);
 			}
 
 			static inline void LEDs_ToggleLEDs(const uint8_t LEDMask)
diff --git a/LUFA/Drivers/Board/XMEGA/B1_XPLAINED/LEDs.h b/LUFA/Drivers/Board/XMEGA/B1_XPLAINED/LEDs.h
index caa5cd7a2a..50ef7d86ab 100644
--- a/LUFA/Drivers/Board/XMEGA/B1_XPLAINED/LEDs.h
+++ b/LUFA/Drivers/Board/XMEGA/B1_XPLAINED/LEDs.h
@@ -120,7 +120,7 @@
 			{
 				PORTB.DIRCLR    = LEDS_PORTB_LEDS;
 				PORTB.OUTCLR    = LEDS_PORTB_LEDS;
-				
+
 				PORTCFG.MPCMASK = 0;
 				PORTB.PIN0CTRL  = LEDS_PORTB_LEDS;
 
@@ -149,11 +149,12 @@
 				PORTE_OUTSET = ((LEDMask & LEDS_PORTE_LEDS) << LEDS_PORTE_MASK_SHIFT);
 			}
 
-			static inline void LEDs_ChangeLEDs(const uint8_t LEDMask, const uint8_t ActiveMask)
+			static inline void LEDs_ChangeLEDs(const uint8_t LEDMask,
+			                                   const uint8_t ActiveMask)
 			{
 				PORTB_OUTCLR =  (LEDMask & LEDS_PORTB_LEDS);
 				PORTE_OUTCLR = ((LEDMask & LEDS_PORTE_LEDS) << LEDS_PORTE_MASK_SHIFT);
-			
+
 				PORTB_OUTSET =  (ActiveMask & LEDS_PORTB_LEDS);
 				PORTE_OUTSET = ((ActiveMask & LEDS_PORTE_LEDS) << LEDS_PORTE_MASK_SHIFT);
 			}
diff --git a/LUFA/Drivers/Board/XMEGA/C3_XPLAINED/LEDs.h b/LUFA/Drivers/Board/XMEGA/C3_XPLAINED/LEDs.h
index d3488537d2..348eedf156 100644
--- a/LUFA/Drivers/Board/XMEGA/C3_XPLAINED/LEDs.h
+++ b/LUFA/Drivers/Board/XMEGA/C3_XPLAINED/LEDs.h
@@ -140,14 +140,21 @@
 
 			static inline void LEDs_SetAllLEDs(const uint8_t LEDMask)
 			{
-				PORTR_OUT = ((PORTR.OUT & ~LEDS_PORTR_LEDS) | (LEDMask & LEDS_PORTR_LEDS));
-				PORTD_OUT = ((PORTD.OUT & ~LEDS_PORTD_LEDS) | (LEDMask & LEDS_PORTD_LEDS));
+				PORTR_OUTCLR = LEDS_PORTR_LEDS;
+				PORTD_OUTCLR = LEDS_PORTD_LEDS;
+
+				PORTR_OUTSET = (LEDMask & LEDS_PORTR_LEDS);
+				PORTD_OUTSET = (LEDMask & LEDS_PORTD_LEDS);
 			}
 
-			static inline void LEDs_ChangeLEDs(const uint8_t LEDMask, const uint8_t ActiveMask)
+			static inline void LEDs_ChangeLEDs(const uint8_t LEDMask,
+			                                   const uint8_t ActiveMask)
 			{
-				PORTR_OUT = (PORTR.OUT & ~(LEDMask & LEDS_PORTR_LEDS)) | (Active & LEDS_PORTR_LEDS);
-				PORTD_OUT = (PORTD.OUT & ~(LEDMask & LEDS_PORTD_LEDS)) | (Active & LEDS_PORTD_LEDS);
+				PORTR_OUTCLR = (LEDMask & LEDS_PORTR_LEDS);
+				PORTD_OUTCLR = (LEDMask & LEDS_PORTD_LEDS);
+
+				PORTR_OUTSET = (ActiveMask & LEDS_PORTR_LEDS);
+				PORTD_OUTSET = (ActiveMask & LEDS_PORTD_LEDS);
 			}
 
 			static inline void LEDs_ToggleLEDs(const uint8_t LEDMask)