diff --git a/profiles/LoL-Shield_Mega2560 b/profiles/LoL-Shield_Mega2560
new file mode 100644
index 0000000..2e60578
--- /dev/null
+++ b/profiles/LoL-Shield_Mega2560
@@ -0,0 +1,125 @@
+#
+# Automatically generated by make menuconfig: don't edit
+#
+
+#
+# General Setup
+#
+MCU=atmega2560
+FREQ=16000000
+
+#
+# Borg Hardware
+#
+NUM_ROWS=9
+NUM_COLS=14
+NUMPLANE=3
+BORG_HW=HW_LOLSHIELD
+
+#
+# lolshield setup
+#
+USER_TIMER0_FOR_WAIT=1
+BRIGHTNESS=127
+
+#
+# Features
+#
+RANDOM_SUPPORT=y
+# LAP_TIME_EXTENSION is not set
+SCROLLTEXT_SUPPORT=y
+SCROLLTEXT_FONT=FONT_C64
+SCROLLTEXT_BUFFER_SIZE=128
+SCROLL_X_SPEED=20
+SCROLL_Y_SPEED=20
+SCROLLTEXT_TEXT="</#Borgware 2D"
+# RFM12_SUPPORT is not set
+JOYSTICK_SUPPORT=y
+# PARALLEL_JOYSTICK_SUPPORT is not set
+# NES_PAD_SUPPORT is not set
+# RFM12_JOYSTICK_SUPPORT is not set
+# HC165_JOYSTICK_SUPPORT is not set
+NULL_JOYSTICK_SUPPORT=y
+# CAN_SUPPORT is not set
+# MENU_SUPPORT is not set
+
+#
+# Games
+#
+GAME_TETRIS_CORE=y
+# GAME_TETRIS is not set
+# GAME_BASTET is not set
+# GAME_TETRIS_FP is not set
+# GAME_SPACE_INVADERS is not set
+# GAME_SNAKE is not set
+GAME_BREAKOUT=y
+
+#
+# Animations
+#
+ANIMATION_SCROLLTEXT=y
+ANIMATION_SPIRAL=y
+SPIRAL_DELAY=5
+ANIMATION_JOERN1=y
+ANIMATION_SNAKE=y
+SNAKE_CYCLE_DELAY=100
+SNAKE_TERMINATION_DELAY=60
+SNAKE_MAX_LENGTH=64
+SNAKE_MAX_APPLES=10
+ANIMATION_CHECKERBOARD=y
+ANIMATION_FIRE=y
+FIRE_S=30
+FIRE_N=5
+FIRE_DIV=44
+FIRE_DELAY=50
+FIRE_CYCLES=800
+ANIMATION_MATRIX=y
+MATRIX_STREAMER_NUM=30
+MATRIX_CYCLES=500
+MATRIX_DELAY=60
+ANIMATION_RANDOM_BRIGHT=y
+ANIMATION_STONEFLY=y
+ANIMATION_FLYINGDOTS=y
+ANIMATION_GAMEOFLIFE=y
+GOL_DELAY=100
+GOL_CYCLES=360
+ANIMATION_BREAKOUT=y
+# ANIMATION_MHERWEG is not set
+ANIMATION_MOIRE=y
+ANIMATION_LTN_ANT=y
+# ANIMATION_TIME is not set
+TIME_MASTER_ADDR=00
+TIME_UPDATE_TIMEOUT=50
+ANIMATION_BMSCROLLER=y
+# ANIMATION_LABORLOGO is not set
+ANIMATION_AMPHIBIAN=y
+# ANIMATION_LOGO_OOS is not set
+ANIMATION_FAIRYDUST=y
+
+#
+# Fixed-point math patterns
+#
+ANIMATION_PLASMA=y
+FP_PLASMA_DELAY=10
+ANIMATION_PSYCHEDELIC=y
+FP_PSYCHO_DELAY=25
+ANIMATION_BLACKHOLE=y
+ANIMATION_SQUARES=y
+# ANIMATION_TESTS is not set
+# ANIMATION_OFF is not set
+
+#
+# small Animations
+#
+# SMALLANIMATION_ROWWALK is not set
+SMALLANIMATION_ROWWALK_SPEED=50
+SMALLANIMATION_ROWWALK_COUNT=10
+# SMALLANIMATION_COLWALK is not set
+SMALLANIMATION_COLWALK_SPEED=50
+SMALLANIMATION_COLWALK_COUNT=10
+# SMALLANIMATION_ROWBOUNCE is not set
+SMALLANIMATION_ROWBOUNCE_SPEED=50
+SMALLANIMATION_ROWBOUNCE_COUNT=10
+# SMALLANIMATION_COLBOUNCE is not set
+SMALLANIMATION_COLBOUNCE_SPEED=50
+SMALLANIMATION_COLBOUNCE_COUNT=10
diff --git a/src/borg_hw/borg_hw_lolshield.c b/src/borg_hw/borg_hw_lolshield.c
index 1faf07a..88a4471 100644
--- a/src/borg_hw/borg_hw_lolshield.c
+++ b/src/borg_hw/borg_hw_lolshield.c
@@ -234,7 +234,10 @@ static void compose_cycle(uint8_t const cycle, uint8_t plane) {
 	uint8_t *const p = &pixmap[plane][0][0];
 
 #if defined (__AVR_ATmega1280__) || defined (__AVR_ATmega2560__)
-#	warning "BEWARE: Borgware-2D has not been tested on Arduino Mega 1280/2560!"
+#	ifdef __AVR_ATmega1280__
+#		warning "BEWARE: Borgware-2D has not been tested on Arduino Mega 1280!"
+#	endif
+
 	// Set sink pin to Vcc/source, turning off current.
 	static uint8_t sink_b = 0, sink_e = 0, sink_g = 0, sink_h = 0;
 	PINB = sink_b;
@@ -247,13 +250,13 @@ static void compose_cycle(uint8_t const cycle, uint8_t plane) {
 	DDRG &= ~0x20;
 	DDRH &= ~0x78;
 
-	static uint8_t const sink_b_cycle[] =
+	static uint8_t const PROGMEM sink_b_cycle[] =
 		{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x20, 0x40, 0x80};
-	static uint8_t const sink_e_cycle[] =
+	static uint8_t const PROGMEM sink_e_cycle[] =
 		{0x10, 0x20, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
-	static uint8_t const sink_g_cycle[] =
+	static uint8_t const PROGMEM sink_g_cycle[] =
 		{0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
-	static uint8_t const sink_h_cycle[] =
+	static uint8_t const PROGMEM sink_h_cycle[] =
 		{0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x20, 0x40, 0x00, 0x00, 0x00, 0x00};
 
 	uint8_t pins_b = sink_b = pgm_read_byte(&sink_b_cycle[cycle]);
@@ -662,7 +665,7 @@ static void compose_cycle(uint8_t const cycle, uint8_t plane) {
 	// (I could have done this with a lookup table, but that would be slower as
 	// non-constant bit shifts are quite expensive on AVR)
 	// NOTE: (0,0) is UPPER RIGHT in the Borgware realm
-    if (plane < NUMPLANE) {
+	if (plane < NUMPLANE) {
 		switch(cycle) {
 		case 0:
 			pins_b |= (0x02u & p[ 0]) << 4; // x= 1, y= 0, mapped pin D13
@@ -815,7 +818,7 @@ static void compose_cycle(uint8_t const cycle, uint8_t plane) {
 			pins_d |= (0x40u & p[16]) >> 1; // x= 6, y= 8, mapped pin D5
 			break;
 		}
-    }
+	}
 
 	// Enable pullups on new output pins.
 	PORTD = pins_d;
diff --git a/src/random/Makefile b/src/random/Makefile
index 725498e..0597a7c 100644
--- a/src/random/Makefile
+++ b/src/random/Makefile
@@ -5,8 +5,13 @@ TARGET = objects_avr
 include $(MAKETOPDIR)/defaults.mk
 
 #for AVR
-SRC  = prng.c persistentCounter.c
-ASRC = noekeon_asm.S memxor.S
+ifeq ($(findstring atmega256,$(MCU)),atmega256)
+	# handmade assembler routines don't work on ATmega2560
+	SRC  = prng.c persistentCounter.c noekeon.c memxor_c.c  
+else
+	SRC  = prng.c persistentCounter.c
+	ASRC = noekeon_asm.S memxor.S
+endif
 
 #for simulator
 SRC_SIM  = prng.c persistentCounter.c noekeon.c memxor_c.c
diff --git a/src/random/noekeon.c b/src/random/noekeon.c
index 8a4c23a..ea15f27 100644
--- a/src/random/noekeon.c
+++ b/src/random/noekeon.c
@@ -98,9 +98,9 @@ void noekeon_round(uint32_t* key, uint32_t* state, uint8_t const1, uint8_t const
 	pi2(state);
 }
 
-uint8_t rc_tab[]
+uint8_t const rc_tab[]
 #ifdef __AVR__
- PROGMEM 
+ PROGMEM
 #endif
   = {
 /*	0x80, */
@@ -146,7 +146,7 @@ void noekeon_enc(void* buffer, const void* key){
 	for(i=0; i<ROUND_NR; ++i){
 		noekeon_round((uint32_t*)keyb, (uint32_t*)buffer, rc, 0);
 #ifdef __AVR__
-		rc = pgm_read_byte(rc_tab+i);
+		rc = pgm_read_byte(&rc_tab[i]);
 #else
 		rc = rc_tab[i];
 #endif
@@ -177,7 +177,7 @@ void noekeon_dec(void* buffer, const void* key){
 	
 	for(i=ROUND_NR-1; i>=0; --i){
 #ifdef __AVR__
-		rc = pgm_read_byte(rc_tab+i);
+		rc = pgm_read_byte(&rc_tab[i]);
 #else
 		rc = rc_tab[i];
 #endif