diff --git a/boop/Makefile b/boop/Makefile
index 8109d9a..8a4eaf4 100644
--- a/boop/Makefile
+++ b/boop/Makefile
@@ -25,8 +25,9 @@
 #ARMPATH = $(ARMBASE)/bin/
 TOOLPREFIX = arm-none-eabi-
 LPCTOOL = lpctool
-OPENOCDPATH = F:\Tools\OpenOCD
-OPENOCD = $(OPENOCDPATH)\openocd.exe -f betty.cfg -f $(OPENOCDPATH)\interface\uniprog.cfg 
+OPENOCDPATH = F:\Tools\OpenOCD_0_10
+#OPENOCD = $(OPENOCDPATH)\bin\openocd.exe -f $(OPENOCDPATH)\scripts\interface\jlink.cfg -f betty.cfg 
+OPENOCD = $(OPENOCDPATH)\bin\openocd.exe -f $(OPENOCDPATH)\scripts\interface\uniprog.cfg -f betty.cfg 
 
 ###############################################################
 #####
@@ -42,12 +43,9 @@ OD = $(ARMPATH)$(TOOLPREFIX)objdump
 SIZE = $(ARMPATH)$(TOOLPREFIX)size
 
 CPUFLAGS = -mcpu=arm7tdmi-s
-OPTFLAGS = -Os
-CFLAGS = -Wall -mthumb-interwork 
+CFLAGS = -Wall -mthumb-interwork -g3  -c
 INC = -I. -Iinterrupt -Idisplay -Ikeyboard -Iaudio -Iinfrared -Iserial -Iflash -Icc1100 -Igui -Itimer -Igames -Iadc -Irtc  -Itools
 ASFLAGS = -g -I. -mthumb-interwork 
-#LDFLAGS = -Tlpc2220_rom.ld -Map boop.map
-#LIBS = -lc -lgcc
 LDFLAGS = -mthumb-interwork -nostartfiles -Xlinker -Map -Xlinker boop.map -Tlpc2220_rom.ld
 THUMBFLAGS = -mthumb
 
@@ -55,6 +53,9 @@ COMPILE = $(CC) $(CPUFLAGS) $(CFLAGS) $(INC)
 
 ifeq ($(MAKECMDGOALS),debug)
 	COMPILE += -D DEBUGMODE
+	OPTFLAGS = -O0
+else
+	OPTFLAGS = -Os
 endif
 
 ifeq ($(MAKECMDGOALS),release)
diff --git a/boop/audio/sid.c b/boop/audio/sid.c
index 0128d39..9ade33e 100644
--- a/boop/audio/sid.c
+++ b/boop/audio/sid.c
@@ -157,7 +157,7 @@ void beep(unsigned char n) {
 			SIDsetfrq(0,5001);
 			break;
 	}
-	PWMPR = 0;
+	//PWMPR = 0;
 	switchSound(SOUND_ON);
 	SID.flags |= SIDenable;
 	SID.reg[REG_Control] |= GATE;
diff --git a/boop/audio/sid.h b/boop/audio/sid.h
index e67980f..05833b5 100644
--- a/boop/audio/sid.h
+++ b/boop/audio/sid.h
@@ -101,12 +101,12 @@ struct SID_ {
 
 struct SID_ SID;
 
-unsigned int playtone_cb;
-unsigned char *playtone[3];
-unsigned char playstate;
-unsigned char tonelen[3];
-unsigned short playcounter;
-unsigned short playcountermax;
+extern unsigned int playtone_cb;
+extern unsigned char *playtone[3];
+extern unsigned char playstate;
+extern unsigned char tonelen[3];
+extern unsigned short playcounter;
+extern unsigned short playcountermax;
 
 void SIDsetfrq(unsigned char voice, unsigned short frq);
 void SIDsetadsr(unsigned char voice,unsigned char attack, unsigned char decay, unsigned char sustain, unsigned char release);
diff --git a/boop/audio/sidfiles.h b/boop/audio/sidfiles.h
index 0a4dccb..6f10dde 100644
--- a/boop/audio/sidfiles.h
+++ b/boop/audio/sidfiles.h
@@ -769,6 +769,7 @@ const unsigned char song1[] = {
 0xa2,0x25,0x00,0x00,0x21,0x11,0x70,0xd2,0x0f,0x00,0x00,0x21,0x00,0x70,
 0xa2,0x25,0x00,0x00,0x21,0x11,0x70,0xd2,0x0f,0x00,0x00,0x21,0x00,0x70,
 0xa2,0x25,0x00,0x00,0x21,0x11,0x70,0xd2,0x0f,0x00,0x00,0x21,0x00,0x70,
+/*
 0x1f,0x15,0x00,0x00,0x21,0x11,0x70,0xc3,0x10,0x00,0x00,0x21,0x00,0x70,
 0x1f,0x15,0x00,0x00,0x21,0x11,0x70,0xc3,0x10,0x00,0x00,0x21,0x00,0x70,
 0x1f,0x15,0x00,0x00,0x21,0x11,0x70,0xc3,0x10,0x00,0x00,0x21,0x00,0x70,
@@ -1001,4 +1002,5 @@ const unsigned char song1[] = {
 0xc1,0x2c,0x00,0x00,0x21,0x11,0x70,0x31,0x1c,0x00,0x00,0x21,0x00,0x70,
 0xc1,0x2c,0x00,0x00,0x21,0x11,0x70,0x31,0x1c,0x00,0x00,0x21,0x00,0x70,
 0xc1,0x2c,0x00,0x00,0x21,0x11,0x70,0x31,0x1c,0x00,0x00,0x21,0x00,0x70
+*/
 };
diff --git a/boop/audio/sound.c b/boop/audio/sound.c
index 310ecbc..3eee98c 100644
--- a/boop/audio/sound.c
+++ b/boop/audio/sound.c
@@ -20,6 +20,7 @@
 #include "sound.h"
 #include "soundirq.h"
 #include "lpc2220.h"
+#include "pwm.h"
 
 #define AUTO_OFF_TIME	0x4000
 
@@ -37,7 +38,7 @@ unsigned char timeout;
 unsigned int auto_timeout;
 
 void startSoundIRQ(void)
-{
+{/*
 	timeout = 0;
 	auto_timeout = 0;
 	out1 = 0;
@@ -57,6 +58,7 @@ void startSoundIRQ(void)
 	//VICVectCntl0 = VIC_SLOT_EN | INT_SRC_PWM;
 	VICIntSelect |= INT_PWM;
 	VICIntEnable = INT_PWM;
+	*/
 }
 
 void initSound(void)
@@ -67,12 +69,18 @@ void initSound(void)
 	tval = 0;
 	last_sample = 0;
 	bl_val = 0x3F;
+	timeout = 0;
+	auto_timeout = 0;
+	out1 = 0;
 }
 
 void switchSound(unsigned char onoff)
 {
 	if(onoff)
 	{
+
+		PWM_set_frequency(30864);
+
 		sound_shutdown = 0;
 		PINSEL0 &= ~(3 << (2 * SND_PWM)); 			// IO
 		PINSEL0 |=  (2 << (2 * SND_PWM)); 			// PWM
@@ -81,6 +89,7 @@ void switchSound(unsigned char onoff)
 		FIODIR0 |= (1<<SND_ON) | (1<<SND_EN);
 		FIOSET0  = (1<<SND_EN);
 		FIOCLR0  = (1<<SND_ON);
+
 	}
 	else
 	{
diff --git a/boop/audio/soundirq.c b/boop/audio/soundirq.c
index d034c08..a7df808 100644
--- a/boop/audio/soundirq.c
+++ b/boop/audio/soundirq.c
@@ -21,6 +21,7 @@
 #include "sound.h"
 #include "sid.h"
 #include "lpc2220.h"
+#include "pwm.h"
 
 #define AUTO_OFF_TIME	0x4000
 
@@ -35,20 +36,21 @@ extern volatile char last_sample;
 */
 
 unsigned int tval;
-unsigned char bl_val, cmp_val;	// backlight PWM
 unsigned int slen;
 unsigned char *sdata;
 unsigned char sact;
 unsigned char out1;
 unsigned char last_sample;
 unsigned char sound_shutdown;
+unsigned char tcount;
 
 const unsigned char prevvoice[3] = {2,0,1};
 
 void __attribute__ ((section(".text.fastcode"))) soundIRQ (void)
 {
 	PWMIR = 0x01;
-	
+
+/*
 	// play sample
 	if(sact != 0)
 	{
@@ -76,8 +78,9 @@ void __attribute__ ((section(".text.fastcode"))) soundIRQ (void)
 			PWMLER = 0x04;
 		}
 	}
+
 	// synthesize
-	else if(SID.flags & SIDenable) 
+	else */if(SID.flags & SIDenable)
 	{
 		unsigned short tempphase;
 		unsigned char x;
@@ -211,16 +214,4 @@ void __attribute__ ((section(".text.fastcode"))) soundIRQ (void)
 		}
 	}
 	
-	// backlight pwm
-	cmp_val += bl_val;
-	if (cmp_val >= 63) 
-	{
-		FIODIR0 |= (1<<4);		// sck0/P0.4
-		cmp_val -= 63;
-	} 
-	else 
-	{
-		FIODIR0 &= ~(1<<4);		// sck0/P0.4
-	}
-
 }
diff --git a/boop/betty.cfg b/boop/betty.cfg
index 77e37d7..ba49750 100644
--- a/boop/betty.cfg
+++ b/boop/betty.cfg
@@ -20,24 +20,31 @@ if { [info exists CPUTAPID ] } {
 }
 
 #coonfigure reset options
-jtag_nsrst_delay 50	
-jtag_ntrst_delay 50
+adapter_nsrst_delay 1
+jtag_ntrst_delay 1
 
 #use combined on interfaces or targets that can't set TRST/SRST separately
-reset_config trst_and_srst srst_pulls_trst trst_push_pull srst_push_pull
+reset_config srst_only srst_pulls_trst trst_push_pull srst_push_pull
 
-jtag_khz 1000
+adapter_khz 1000
 
 #jtag scan chain
 jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
 
 set _TARGETNAME $_CHIPNAME.cpu
-target create $_TARGETNAME arm7tdmi -endian $_ENDIAN -chain-position $_TARGETNAME -variant arm7tdmi
+target create $_TARGETNAME arm7tdmi -endian $_ENDIAN -chain-position $_TARGETNAME
 
 # Event handlers
-$_TARGETNAME configure -event reset-start {jtag_khz 1000}
+$_TARGETNAME configure -event reset-start {adapter_khz 1000}
 $_TARGETNAME configure -event reset-init  {betty_init}
 
+$_TARGETNAME configure -event gdb-attach {
+   halt
+ }
+ $_TARGETNAME configure -event gdb-attach {
+   reset init
+ }
+ 
 arm7_9 dcc_downloads enable
 
 $_TARGETNAME configure -work-area-phys 0x40000000 -work-area-size 0x10000 -work-area-backup 0
@@ -45,7 +52,7 @@ $_TARGETNAME configure -work-area-phys 0x40000000 -work-area-size 0x10000 -work-
 #flash bank <name> <driver> <base_addr> <size> <chip_width> <bus_width> <target_number> [<target_name> <banks> <sectors_per_bank> <pages_per_sector> <page_size> <num_nvmbits> <ext_freq_khz>]
 set _FLASHNAME $_CHIPNAME.flash
 flash bank $_FLASHNAME cfi 0x80000000 0x00100000 2 2 $_TARGETNAME
-flash bank $_FLASHNAME cfi 0x82000000 0x00100000 2 2 $_TARGETNAME
+#flash bank $_FLASHNAME cfi 0x82000000 0x00100000 2 2 $_TARGETNAME
 
 arm7_9 fast_memory_access enable
 
@@ -58,18 +65,18 @@ proc betty_init { } {
 	# PLLCFG: 0x42 = psel = 10 (4) = msel= 00010 (3) = 240 mhz Fcco*/
 	mww 0xe01fc084 0x42
 	# Activate PLL settings
-	#mww 0xe01fc08c 0xaa
-	#mww 0xe01fc08c 0x55
+	mww 0xe01fc08c 0xaa
+	mww 0xe01fc08c 0x55
 	#sleep 100
 	
 	# Memory Bank Configuration
 	# BCFG0: 16bit, rble, 2wst - 30 mhz : Betty: FLASH 0 @ 0x80000000
-	mww 0xffe00000 0x10000420
+	mww 0xffe00000 0x10001CA0
 	# BCFG2: 16bit, rble, 2wst - 30 mhz : Betty: FLASH 1 @ 0x82000000
-	mww 0xffe00008 0x10000420
+	mww 0xffe00008 0x10001CA0
 	
 	# BCFG1: 8 bit, 3 sram wst, rble, 5 wst 3 idcy : Betty: LCD @ 0x81000000
-	#mww 0xffe00004 0x00000400
+	mww 0xffe00004 0x00000400
 	
 	# GPIO Pin COnfiguration for Flash access
 	# PINSEL0:
@@ -88,16 +95,21 @@ proc betty_init { } {
 	mww 0xe0028008 0x002018D0
 	
 	# disable watchdog
-	#mww 0xfffffd44 0x00008000
+	mww 0xfffffd44 0x00008000
 	# enable user reset
-	#mww 0xfffffd08 0xa5000001
+	mww 0xfffffd08 0xa5000001
+	
 }
 
 proc flash_boop {IMAGE} {
 	reset init
+
+	flash erase_sector 0 0 0
+	flash erase_check 0
 	flash erase_sector 0 0 last
-	flash write_bank 0 $IMAGE 0
-	reset run
+  flash erase_check 0
+  flash write_bank 0 $IMAGE 0
+  reset run
 }
 
 proc start_debug {} {
diff --git a/boop/betty.gdbinit b/boop/betty.gdbinit
new file mode 100644
index 0000000..606ca2c
--- /dev/null
+++ b/boop/betty.gdbinit
@@ -0,0 +1,47 @@
+monitor reset 100
+monitor halt
+monitor endian little
+
+# BCFG0: 16bit, rble, 6wst - 60 mhz : Betty: FLASH 0 @ 0x80000000
+monitor memU32 0xFFE00000 = 0x100004A0
+
+#BCFG2: 16bit, rble, 6wst - 60 mhz : Betty: FLASH 1 @ 0x82000000
+monitor memU32 0xFFE00008 = 0x100004A0
+
+#PINSEL0
+monitor memU32 0xE002C000 = 0x00008005
+
+#PINSEL1
+monitor memU32 0xE002C004 = 0x00000000
+
+#PINSEL2
+monitor memU32 0xE002C014 = 0x0de049d4
+
+#IO2SET
+monitor memU32 0xE0028024 = 0x1FC0000
+
+#IO2DIR
+monitor memU32 0xe0028028 = 0x1FC0000
+
+#IO0DIR
+monitor memU32 0xE0028008 = 0x002018D0
+
+#PLLCON: Enable PLL, connect PLL
+monitor memU32 0xe01fc080 = 0xe01fc000
+
+# VBPDIV:
+monitor memU32 0xe01fc100 = 0x00000000
+
+#PLLCFG: 
+monitor memU32 0xe01fc084 = 0x00000045
+
+#Activate PLL settings
+monitor memU32 0xe01fc08c = 0xaa
+monitor memU32 0xe01fc08c = 0x55
+
+
+# Enable Flash Breakpoints and Download
+monitor WorkRAM = 0x40000000 - 0x2000FBFF
+monitor flash CFI = 0x80000000 - 0x800FFFFF
+monitor flash breakpoints = 1
+monitor flash download = 1
\ No newline at end of file
diff --git a/boop/boop_rom.bin b/boop/boop_rom.bin
index 07d71ad..d799393 100644
Binary files a/boop/boop_rom.bin and b/boop/boop_rom.bin differ
diff --git a/boop/cc1100/cc1100.c b/boop/cc1100/cc1100.c
index 4495d30..4874ca2 100644
--- a/boop/cc1100/cc1100.c
+++ b/boop/cc1100/cc1100.c
@@ -176,6 +176,8 @@ unsigned char cc1100_write(unsigned char addr,unsigned char* data, unsigned char
 	unsigned short i;
 	unsigned char status;
 	unsigned char x;
+
+	(void)(x);
 	
 	FIOCLR0 = CS1;
 	while (FIOPIN0 & MISO1);
@@ -197,8 +199,10 @@ unsigned char cc1100_write(unsigned char addr,unsigned char* data, unsigned char
 unsigned char cc1100_write1(unsigned char addr,unsigned char data) {
 
 	unsigned char status;
-	unsigned char x;
+	volatile unsigned char x=0;
 	
+	(void)(x);
+
 	FIOCLR0 = CS1;
 	while (FIOPIN0 & MISO1);
 	SSPDR = (addr | WRITE);
diff --git a/boop/cc1100/fs20.c b/boop/cc1100/fs20.c
index f029998..2f4de50 100644
--- a/boop/cc1100/fs20.c
+++ b/boop/cc1100/fs20.c
@@ -51,7 +51,7 @@ void fs20_decoder(void) {
 	unsigned char FS20inbit = 0;
 	unsigned char FS20protocol = PROTOCOL_UNKNOWN;
 	unsigned short tempbyte = 0;
-	unsigned char finish = 0;
+//	unsigned char finish = 0;
 	
 	unsigned long pulse = 0;
 	unsigned long space = 0;
@@ -77,7 +77,7 @@ void fs20_decoder(void) {
 	cc1100_strobe(SRX);
 	
 	serial_puts("\n\r");
-	
+
 	while(KEY_Exit) {};
 	while(!KEY_Exit)
 	{
@@ -188,7 +188,7 @@ void fs20_decoder(void) {
 				}
 				
 				if(FS20protocol == PROTOCOL_WEATHER) {
-					if(FS20_BETWEEN(pulse, 685, 1020) && FS20_BETWEEN(space, 200, 533))
+				  if(FS20_BETWEEN(pulse, 685, 1020) && FS20_BETWEEN(space, 200, 533))
 						FS20inbit = 0;
 					else if(FS20_BETWEEN(pulse, 200, 533) && FS20_BETWEEN(space, 685, 1020))
 						FS20inbit = (1<<3);
@@ -215,7 +215,9 @@ void fs20_decoder(void) {
 								FS20bitcounter = 0;	
 							}
 							else {
-								tempbyte = (tempbyte>>=1) | FS20inbit;
+								//tempbyte = (tempbyte>>=1) | FS20inbit;
+							  tempbyte>>=1;
+							  tempbyte |= FS20inbit;
 								if(FS20bitcounter++ == 8) {
 									FS20inbyte[FS20bytecounter] = tempbyte;
 									tempbyte = 0;
@@ -263,9 +265,7 @@ void fs20_decoder(void) {
 										FS20bytecounter++;
 										FS20parity = 0;
 										if(FS20bytecounter == 0x0a) {	//packet full received
-											unsigned char dec[8];
 
-											dec[0] = FS20inbyte[1] ^ 0x89;
 											for(x=9;x>1;x--) {
 												FS20inbyte[x] = (FS20inbyte[x-1] + 0x24) ^ FS20inbyte[x];
 											}
@@ -329,7 +329,7 @@ void fs20_decoder(void) {
 					}
 
 					serial_puts("\n\r");
-					finish = 0;
+					//finish = 0;
 					FS20bytecounter = 0;
 					FS20protocol = PROTOCOL_UNKNOWN;
 				}
diff --git a/boop/cc1100/rf.c b/boop/cc1100/rf.c
index 00ea4a1..62ce2e2 100644
--- a/boop/cc1100/rf.c
+++ b/boop/cc1100/rf.c
@@ -413,7 +413,7 @@ void startRFIRQ(void) {
 	VICIntEnable = INT_EINT0;
 }
 
-inline void stopRFIRQ(void) {
+void stopRFIRQ(void) {
 	VICIntEnClr = INT_EINT0;
 }
 
diff --git a/boop/crt.s b/boop/crt.s
index 27636b6..34bf0dc 100644
--- a/boop/crt.s
+++ b/boop/crt.s
@@ -182,7 +182,7 @@ Reset_Handler:
 				/*  --+--+-+-+-+-+--------+-----+-------+-+---- */
 /*	ldr	r1, =0x10000400 /*  00|01|0|0|0|0|00000000|00000|1|00000|0|0000 16bit, rble, 3wst - 10 mhz*/
 /*	ldr	r1, =0x10000420 /*  00|01|0|0|0|0|00000000|00000|1|00001|0|0000 16bit, rble, 4wst - 30 mhz*/
-	ldr	r1, =0x100004A0 /*  00|01|0|0|0|0|00000000|00000|1|00101|0|0000 16bit, rble, 6wst - 60 mhz*/
+	ldr	r1, =0x10001CA0 /*  00|01|0|0|0|0|00000000|00101|1|00101|0|0000 16bit, rble, 6wst - 60 mhz*/
 
 	str	r1,[r0]		/* set bcfg0 (flash) */
 	str	r1,[r0,#0x08]	/* set bcfg2 (flash) */
diff --git a/boop/display/lcd.c b/boop/display/lcd.c
index 0b1a02c..c186d44 100644
--- a/boop/display/lcd.c
+++ b/boop/display/lcd.c
@@ -372,8 +372,9 @@ void __attribute__ ((section (".text.fastcode"))) _do_rcuAlpha (
 void __attribute__ ((section (".text.fastcode"))) _do_rcuS (
    unsigned char x, unsigned char y, unsigned char m)
 {
-	unsigned char q;
+	volatile unsigned char q=0;
 	
+	(void)(q);
 	
 	if((x > BORDER_RIGHT))// | (x < BORDER_LEFT))
 		return;
@@ -429,7 +430,7 @@ void __attribute__ ((section (".text.fastcode"))) _do_rcuS (
 void __attribute__ ((section(".text.fastcode"))) _draw_block(unsigned char x, unsigned char y, unsigned char w, unsigned char h, unsigned char c, unsigned char m)
 {
 	unsigned char q,s;
-	unsigned char yy,ss,vv,ww,xx;
+	unsigned char yy,vv,ww,xx;
 	unsigned char segm;
 	is_drawing++;
 
@@ -441,7 +442,6 @@ void __attribute__ ((section(".text.fastcode"))) _draw_block(unsigned char x, un
 	if(h)
 	{
 		yy = h;
-		ss = y >> 3;
 		vv = y & 0x07;
 	
 		ww = yy & 0x07;
@@ -555,7 +555,7 @@ void __attribute__ ((section(".text.fastcode"))) _draw_hline(unsigned char x, un
 void __attribute__ ((section(".text.fastcode"))) _draw_vline(unsigned char x, unsigned char y, unsigned char l, unsigned char c, unsigned char m)
 {
 	unsigned char s;
-	unsigned char yy,ss,vv,ww,xx;
+	unsigned char yy,vv,ww,xx;
 	unsigned char segm;
 	is_drawing++;
 
@@ -567,7 +567,6 @@ void __attribute__ ((section(".text.fastcode"))) _draw_vline(unsigned char x, un
 		
 		
 		yy = l;
-		ss = y >> 3;
 		vv = y & 0x07;
 	
 		ww = yy & 0x07;
diff --git a/boop/flash/bfs.c b/boop/flash/bfs.c
index 92e75fd..8a9e5c7 100644
--- a/boop/flash/bfs.c
+++ b/boop/flash/bfs.c
@@ -672,13 +672,13 @@ unsigned char readByte(unsigned long ByteAddr)
 unsigned short readWord(unsigned long WordAddr)
 {
 	//addr = unsigned short address
-	int Offset;
+	//int Offset;
 	unsigned short Word;
 
 	//ASSERT((WordAddr * 2) >= FLASH1_BASE);
 	//ASSERT((WordAddr * 2) < (FLASH1_BASE + FLASH_SIZE));
 
-	Offset = (WordAddr * 2) - FLASH1_BASE;
+	//Offset = (WordAddr * 2) - FLASH1_BASE;
 
 	Word = *((unsigned short *)(WordAddr<<1));
 
diff --git a/boop/gui/testmenu.c b/boop/gui/testmenu.c
index 792d712..333fed4 100644
--- a/boop/gui/testmenu.c
+++ b/boop/gui/testmenu.c
@@ -29,6 +29,7 @@
 #include "ir_selector.h"
 #include "infrared.h"
 #include "sid.h"
+#include "sidfiles.h"
 #include "timerfuncs.h"
 #include "sound.h"
 #include "lpc2220.h"
@@ -907,10 +908,8 @@ void test_irrec(void) {
 }
 
 void erase_flash1(void)
-{	int x;
-
-	x = eraseFlash(1);
-	
+{
+	eraseFlash(1);
 }
 
 void test_sid(void) {
@@ -936,6 +935,9 @@ void test_sid(void) {
 	draw_string (0, 95, "color keys", LCD_COLOR_B, DRAW_PUT);
 	draw_string (0, 104, "set waveform", LCD_COLOR_B, DRAW_PUT);
 	
+	draw_string (0, 120, "Mute", LCD_COLOR_B, DRAW_PUT);
+	draw_string (0, 129, "Raiders March", LCD_COLOR_B, DRAW_PUT);
+
 	sysInfo |= SYS_IR;
 	SID.noise = 0xaa;
 	playstate = 0x00;
@@ -1054,6 +1056,20 @@ void test_sid(void) {
 				playtone_cb = addTimerCB(SIDplaytone, 4);
 				startCB(playtone_cb);
 			}
+		} else if (KEY_Mute)
+		{
+			if (playstate == 0)
+			{
+				playstate = 1;
+
+				playtone[0] = (unsigned char*)&song1[0];
+
+				playcounter = 0;
+				playcountermax = sizeof(song1)/14;
+
+				playtone_cb = addTimerCB(SIDplaydump, 4);
+				startCB(playtone_cb);
+			}
 		}
 	} while (!KEY_Exit);
 	sysInfo &= ~SYS_IR;
@@ -1062,8 +1078,7 @@ void test_sid(void) {
 }
 
 void test_click(FORM* form, CONTROL* control) {
-	unsigned char x;
-	x=msgbox(45,BC_OKOnly | BC_DefaultButton1,control->caption);
+	msgbox(45,BC_OKOnly | BC_DefaultButton1,control->caption);
 	form_draw(form);
 }
 
@@ -1076,8 +1091,7 @@ void test3_click(FORM* form, CONTROL* control) {
 }
 
 void test_numbox(FORM* form, CONTROL* control) {
-	unsigned char x;
-	x=msgbox(30,BC_OKOnly | BC_DefaultButton1,"numbox click");
+	msgbox(30,BC_OKOnly | BC_DefaultButton1,"numbox click");
 	form_draw(form);
 }
 
@@ -1091,14 +1105,12 @@ void test_numchange(FORM* form, CONTROL* control) {
 }
 
 void test_change(FORM* form, CONTROL* control) {
-	unsigned short x;
-	x=msgbox(30,BC_OKOnly | BC_DefaultButton1,"geaendert");
+	msgbox(30,BC_OKOnly | BC_DefaultButton1,"geaendert");
 	form_draw(form);
 }
 
 void formload (FORM* form)
 {
-	unsigned char x;
 	struct RFendpoint_* cur_ep;
 	
 	cur_ep = openEP(&(form->controls[7])->tag1, 1, packet_RFenc);
@@ -1110,12 +1122,11 @@ void formload (FORM* form)
 		RF_changestate(RFrx);
 	}
 	
-	x=msgbox(50,BC_OKOnly | BC_DefaultButton1,"Form open");
+	msgbox(50,BC_OKOnly | BC_DefaultButton1,"Form open");
 }
 
 void formclose (FORM* form)
 {
-	unsigned char x;
 	
 	if (form->tag)
 	{
@@ -1123,7 +1134,7 @@ void formclose (FORM* form)
 		RF_changestate(RFwor);
 	}
 
-	x=msgbox(50,BC_OKOnly | BC_DefaultButton1,"Form close");
+	msgbox(50,BC_OKOnly | BC_DefaultButton1,"Form close");
 	
 }
 
diff --git a/boop/infrared/Make.conf b/boop/infrared/Make.conf
index 2a1fa32..f6aed17 100644
--- a/boop/infrared/Make.conf
+++ b/boop/infrared/Make.conf
@@ -1,5 +1,5 @@
-THUMBSRCS := infrared.c codes.c encoders.c ir_capture.c ir_selector.c
-SRCS := infraredirq.c
+THUMBSRCS := infrared.c codes.c encoders.c ir_capture.c ir_selector.c 
+SRCS := infraredirq.c pwm.c
 THUMBSRCSUNOPT := ir_itt.c ir_nrc17.c \
 	ir_raw.c ir_rc5.c ir_rc6.c ir_rca.c ir_rcmm.c ir_rec80.c ir_recs80.c ir_rf.c \
 	ir_sirc.c ir_spaceenc.c ir_lirc.c
diff --git a/boop/infrared/codes.c b/boop/infrared/codes.c
index f30c7ad..99a5f59 100644
--- a/boop/infrared/codes.c
+++ b/boop/infrared/codes.c
@@ -222,7 +222,7 @@ const struct TABLES_N RAW =
 
 const struct TABLES_L LIRC =
 {
-	9,
+	10,
 	{
 		{
 			#include "ir_codes/lirc/ufs922"
@@ -259,6 +259,10 @@ const struct TABLES_L LIRC =
 		{
 			#include "ir_codes/lirc/samsung_ue46b6000"
 			"Samsung TV"
-		}
+		},
+		{
+        #include "ir_codes/lirc/beo4"
+        "bang & olufsen"
+    }
 	}
 };
diff --git a/boop/infrared/infrared.c b/boop/infrared/infrared.c
index e0ac240..5e3aa45 100644
--- a/boop/infrared/infrared.c
+++ b/boop/infrared/infrared.c
@@ -25,6 +25,7 @@
 #include "encoders.h"
 #include "codes.h"
 #include "ir_selector.h"
+#include "pwm.h"
 
 volatile unsigned char mod_enable;
 volatile unsigned char hi_border;
@@ -61,9 +62,9 @@ void startIrIRQ(void)
 //	T1PR		= 0x01;
 	T1MCR		= 0x03;
 
-	//VICVectAddr1	= (unsigned long)&(irIRQ);
-	//VICVectCntl1	= VIC_SLOT_EN | INT_SRC_TIMER1;
-	VICIntSelect 	|= INT_TIMER1;
+	VICVectAddr1	= (unsigned long)&(irIRQ);
+	VICVectCntl1	= VIC_SLOT_EN | INT_SRC_TIMER1;
+	//VICIntSelect 	|= INT_TIMER1;
 	VICIntEnable	= INT_TIMER1;
 }
 
@@ -109,11 +110,21 @@ void defStopper(void)
 void runIR(void)
 {
 	T1TCR		= 0x01;
+	PWM_set_IR_duty_cycle(0);
+
+}
+
+void setIRspeed(struct irModule module)
+{
+	PWM_set_frequency(15000000 / (module.tval * module.lo_border));
+	ir.duty_cycle =(module.hi_border * 100) / module.lo_border;
 }
 
 void stopIR(void)
 {
 	T1TCR		= 0x03;
+	PWM_set_IR_duty_cycle(0);
+
 }
 
 void copyMapC(unsigned char *map)
diff --git a/boop/infrared/infrared.h b/boop/infrared/infrared.h
index b10991e..4e5665a 100644
--- a/boop/infrared/infrared.h
+++ b/boop/infrared/infrared.h
@@ -63,28 +63,8 @@ struct IR_VARS_ {
 			unsigned long		actpre_data;
 			unsigned long		post_data;          // data which the remote sends after actual keycode
 			unsigned long		actpost_data;
-			unsigned short		flags;				// flags
-			unsigned short		phead,shead;		// header
-			unsigned short		plead;				// leading pulse
-			unsigned short		ptrail;				// trailing pulse
-			unsigned short		pfoot,sfoot;		// foot
-			unsigned short		pre_p,pre_s;        // signal between pre_data and keycode
-			unsigned short		post_p,post_s;      // signal between keycode and post_code
-			unsigned short		gap;
-			unsigned short		repeat_gap;
-			unsigned short		prepeat,srepeat;
-			unsigned short		cycles_counter;
-			unsigned char		bits;				// bits (length of code)
-			unsigned char		pre_data_bits;		// length of pre_data
-			unsigned char		post_data_bits;		// length of post_data
-			unsigned char		rc6_bit;			// doubles signal length of this bit (only used for RC-6)
-			unsigned char		pthree,sthree;		// 3 (only used for RC-MM)
-			unsigned char		ptwo,stwo;			// 2 (only used for RC-MM)
-			unsigned char		pone,sone;			// 1
-			unsigned char		pzero,szero;		// 0
-			unsigned char		min_repeat;
+			unsigned long		cycles_counter;
 			unsigned char		bit;
-			unsigned char		map;
 			unsigned char		stop;
 			unsigned char		repeats;
 		} lirc;
@@ -93,11 +73,12 @@ struct IR_VARS_ {
 	unsigned int	actcmd;
 	unsigned char	toggle;
 	unsigned char	state;
+	unsigned char duty_cycle;
 } ir;
 
 
 //#define setIRspeed( _m ) { if(sysInfo & 0x80) T1MR0 = _m.tval1; else T1MR0 = _m.tval; }
-#define setIRspeed( _m ) { T1MR0 = _m.tval; }
+//#define setIRspeed( _m ) { T1MR0 = _m.tval; }
 
 void __attribute__ ((section(".text.fastcode")))  defIR(void); 
 void defSender(unsigned long cmd);
@@ -109,6 +90,7 @@ void startIrIRQ(void);
 void setIR(struct irModule module);
 void runIR(void);
 void stopIR(void);
+void setIRspeed(struct irModule module);
 
 unsigned long setEncoder( unsigned char _x, unsigned char _y );
 
diff --git a/boop/infrared/infraredirq.c b/boop/infrared/infraredirq.c
index 5fa7314..2ae58f8 100644
--- a/boop/infrared/infraredirq.c
+++ b/boop/infrared/infraredirq.c
@@ -23,9 +23,8 @@
 #include "keyboard.h"
 #include "rf.h"
 #include "cc1100.h"
+#include "pwm.h"
 
-static unsigned int c_cnt = 0;
-static unsigned int b_len = 0;
 extern volatile unsigned char mod_enable;
 extern volatile unsigned char hi_border;
 extern volatile unsigned char lo_border;
@@ -35,33 +34,15 @@ extern ir_fn	irEncoder;
 
 void __attribute__ ((section(".text.fastcode"))) irIRQ(void)
 {
-	c_cnt++;
-	if(c_cnt <= hi_border)
-	{
-		FIOSET0 = (mod_enable<<21);
-	}
-	else
-	{
-		FIOCLR0 = (1<<21);
-		if(c_cnt >= lo_border)
-		{
-			c_cnt = 0;
-			b_len++;
-			if(b_len >= cycles)
-			{
-				irEncoder();
-				b_len = 0;
-				
-				if(!hi_border) {	//RF mode
-					if(mod_enable)
-						FIOCLR0 = GDO0;
-					else
-						FIOSET0 = GDO0;
-				}
-			}
-		}
+
+	irEncoder();
+
+	if(mod_enable) {
+	  PWM_set_IR_duty_cycle(ir.duty_cycle);
+	} else {
+	  PWM_set_IR_duty_cycle(0);
 	}
 
 	T1IR = 1;
-//	VICVectAddr = 0;
+
 }
diff --git a/boop/infrared/ir_codes/lirc/beo4 b/boop/infrared/ir_codes/lirc/beo4
new file mode 100644
index 0000000..9869987
--- /dev/null
+++ b/boop/infrared/ir_codes/lirc/beo4
@@ -0,0 +1 @@
+/*
    infrared codes for bang & olufsen
    Copyright (C) 2017  <kölnsolar>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/*pre_data*/		     0x00000000,				// 2. start bit
/*post_data*/		     0x00000000,
/*toggle_bit_mask*/	 0x00,
/*gap*/				       18000,					// final gap to prevent collision
/*repeat_gap*/		   0,
/*bits*/			       17,						// last(4.) start bit logical low as first data bit ==> 1+16 data bits = 17
/*pre_data_bits*/	   1,						// 2. start bit
/*post_data_bits*/	 0,
/*rc6_bit*/			     0,
/*frequency*/		     455000,					// regular freq is 455kHz but to get a valid result 454,5 is used
/*flags*/			       LIRC_BO,  			
/*header*/			     200,3125,				// 1. start bit
/*three*/			       0,0,
/*two*/				       0,0,
/*one*/				       200,9375,
/*zero*/			       200,3125,
/*plead*/			       0,
/*ptrail*/			     200,					// stop bit
/*foot*/			       0,0,
/*pre*/     		     200,15625,				//3. start bit
/*post*/  			     200,12500,				// post bit
/*repeat*/			     0,0,
/*min_repeat*/		   0,
/*duty cycle*/		   30,    

{
	0x0000, // A		->
	0x0000, // B		->
	0x0000, // C		->
	0x0000, // D		->
	0x0000, // Betty	->
	0xB44B, // Exit		->	Exit
	0x06F9, // Up		->	UP
	0x8679, // Down		->	Down
	0xA659, // Left		->	Left
	0x46B9, // Right	->	Right
	0x16E9, // OK		->	OK
	0x0160, // Vol+		->	Vol+
	0x0164, // Vol-		->	Vol-
	0xF00F, // Mute		->	Mute
	0x48B7, // Prog+	->	Prog+
	0x48B7, // Prog-	->	Prog-
	0x0101, // 1		->	1
	0x0102, // 2		->	2
	0x609F, // 3		->	3
	0x10EF, // 4		->	4
	0x906F, // 5		->	5
	0x50AF, // 6		->	6
	0x30CF, // 7		->	7
	0xB04F, // 8		->	8
	0x708F, // 9		->	9
	0x8877, // 0		->	0
	0xF20D, // -/--		->	Guide
	0x0181, // AV		->	Source
	0x0f0c, // Menu		->	Menue
	0xD22D, // PiP		->	Tools
	0x1AE5, // A/B		->	Return
	0x7C83, // 16:9		->	P.Size
	0xF807, // Info		->	Info
	0xD629, // VTX1		->	Ch.List
	0x0000, // VTX2		->	
	0xC837, // VTX3		->	Pre-CH
	0x6897, // Blue		->	Blue
	0xA857, // Yello	->	Yellow
	0x28D7, // Green	->	Green
	0x36C9, // Red		->	Red
	0xC23D, // TV		->	TV/DTV
	0x0f0C  // Power	->	Standby
},
\ No newline at end of file
diff --git a/boop/infrared/ir_itt.c b/boop/infrared/ir_itt.c
index 6294cc4..1156947 100644
--- a/boop/infrared/ir_itt.c
+++ b/boop/infrared/ir_itt.c
@@ -126,6 +126,7 @@ void __attribute__ ((section(".text.fastcode"))) ITT_Encode (void)
 			}
 			break;
 	}
+	T1MR0 = cycles * ITT2_Module.lo_border * ITT2_Module.tval;
 }
 
 void ITT_LoadMap(unsigned char map)
diff --git a/boop/infrared/ir_lirc.c b/boop/infrared/ir_lirc.c
index 7e34d60..2dc4204 100644
--- a/boop/infrared/ir_lirc.c
+++ b/boop/infrared/ir_lirc.c
@@ -25,18 +25,16 @@
 #include "lcd.h"
 #include "rf.h"
 #include "cc1100.h"
+#include "pwm.h"
 
 #include "global.h"
 
 extern volatile unsigned char mod_enable;
 extern volatile unsigned int cycles;
-extern volatile unsigned long keyMap[42];
 
-/*
-#define RAW_IDLE	0x00
-#define RAW_HI	0x01
-#define RAW_LO	0x02
-*/
+struct CODE_TABLE_L *lirctable;
+
+unsigned int prev_cycles;  /*  needed for handling of b&o specific protocol added MN2017325 */
 
 #define LIRC_IDLE	        0x00
 #define LIRC_HEAD_P	        0x01
@@ -73,7 +71,7 @@ const struct irModule LIRC_Module =
 
 unsigned char __attribute__ ((section(".text.fastcode"))) send_data (unsigned long data, unsigned char pulse) {
 	
-	const unsigned char* bittimes[4] = {&(ir.lirc.pzero), &(ir.lirc.pone), &(ir.lirc.ptwo), &(ir.lirc.pthree)};
+	const unsigned short* bittimes[4] = {&(lirctable->pzero), &(lirctable->pone), &(lirctable->ptwo), &(lirctable->pthree)};
 	unsigned char notpulse = 1;
 	
 	if(pulse) {
@@ -112,7 +110,7 @@ unsigned char __attribute__ ((section(".text.fastcode"))) send_data (unsigned lo
 			cycles = bittimes[0][notpulse];
 			mod_enable = pulse;
 		}
-		if((ir.lirc.bit+1 == ir.lirc.rc6_bit))
+		if((ir.lirc.bit+1 == lirctable->rc6_bit))
 			cycles <<= 1;
 	}
 	else {
@@ -132,86 +130,97 @@ unsigned char __attribute__ ((section(".text.fastcode"))) send_data (unsigned lo
 }
 
 void __attribute__ ((section(".text.fastcode"))) LIRC_Encode (void) {
-	unsigned short gap;
+	unsigned long gap;
 
 	ir.lirc.cycles_counter += cycles;
 	
 	switch(ir.state)
 	{
 		case LIRC_IDLE:
-			cycles = ir.lirc.pone;
+			cycles = lirctable->pone;
 			mod_enable = 0;
 			break;
 		case LIRC_HEAD_P:
 			ir.lirc.cycles_counter = 0;
-			if(has_header && (!ir.lirc.repeats || (!(ir.lirc.flags&LIRC_NO_HEAD_REP) && !has_repeat) || (ir.lirc.flags&LIRC_REPEAT_HEADER)))  {	// 
+			if(has_header && (!ir.lirc.repeats || (!(lirctable->flags&LIRC_NO_HEAD_REP) && !has_repeat) || (lirctable->flags&LIRC_REPEAT_HEADER)))  {	//
 				mod_enable = 1;
-				cycles = ir.lirc.phead;
+				cycles = lirctable->phead;
 				ir.state++;
 				break;
 		case LIRC_HEAD_S:
 				mod_enable = 0;
-				cycles = ir.lirc.shead;
+				cycles = lirctable->shead;
 				ir.state++;
 				break;
 			}
 			ir.state = LIRC_LEAD_P;
 		case LIRC_LEAD_P:
-			if(ir.lirc.plead) {
+			if(lirctable->plead) {
 				mod_enable = 1;
-				cycles = ir.lirc.plead;
+				cycles = lirctable->plead;
 				ir.state++;
 				break;
 			}
 			ir.state++;
 		case LIRC_PRE_DAT_P:
 			if(!has_repeat || !(ir.lirc.repeats)) {
-				if(ir.lirc.pre_data_bits) {
+				if(lirctable->pre_data_bits) {
 					send_data(ir.lirc.pre_data,1);
 					ir.state++;
 					break;
 		case LIRC_PRE_DAT_S:
 					ir.lirc.pre_data <<= send_data(ir.lirc.pre_data,0);
-					if(ir.lirc.bit >= ir.lirc.pre_data_bits)
+					if(ir.lirc.bit >= lirctable->pre_data_bits)
 						ir.state++;
 					else
 						ir.state--;
 					break;		
 		case LIRC_PRE_P:
-					if(ir.lirc.pre_p && ir.lirc.pre_s) {
+					if(lirctable->pre_p && lirctable->pre_s) {
 						mod_enable = 1;
-						cycles = ir.lirc.pre_p;
+						cycles = lirctable->pre_p;
 						ir.state++;
 						break;
 		case LIRC_PRE_S:
 						mod_enable = 0;
-						cycles = ir.lirc.pre_s;
+						cycles = lirctable->pre_s;
 						ir.state++;
 						break;
 					}
 				}
-				ir.state = LIRC_DATA_P;	
+				ir.state = LIRC_DATA_P;
+				prev_cycles = 0;
 		case LIRC_DATA_P:
 				send_data(ir.cmd,1);
 				ir.state++;
 				break;
 		case LIRC_DATA_S:
 				ir.cmd <<= send_data(ir.cmd,0);
-				if(ir.lirc.bit >= ir.lirc.pre_data_bits + ir.lirc.bits)
+				/*  handling for b&o specific protocol added MN2017325
+				special r-bit coding, if current bit is equal previous bit     */
+				if(is_BO) {
+					if (prev_cycles  == cycles) {
+						prev_cycles = cycles;
+						cycles   = lirctable->szero * 2 ;
+					} else {
+						prev_cycles = cycles;
+					}
+				}
+				if(ir.lirc.bit >= lirctable->pre_data_bits + lirctable->bits)
 					ir.state++;
 				else
 					ir.state--;
 				break;
 		case LIRC_POST_P:
-				if(ir.lirc.post_data_bits) {
-					if(ir.lirc.post_p && ir.lirc.post_s) {
+				if(lirctable->post_data_bits) {
+					if(lirctable->post_p && lirctable->post_s) {
 						mod_enable = 1;
-						cycles = ir.lirc.post_p;
+						cycles = lirctable->post_p;
 						ir.state++;
 						break;
 		case LIRC_POST_S:
 						mod_enable = 0;
-						cycles = ir.lirc.post_s;
+						cycles = lirctable->post_s;
 						ir.state++;
 						break;
 					}
@@ -221,8 +230,8 @@ void __attribute__ ((section(".text.fastcode"))) LIRC_Encode (void) {
 					ir.state++;
 					break;
 		case LIRC_POST_DAT_S:
-					ir.lirc.post_data <<= send_data(ir.lirc.post_data,0);
-					if(ir.lirc.bit >= ir.lirc.pre_data_bits + ir.lirc.bits +ir.lirc.post_data_bits)
+		  ir.lirc.post_data <<= send_data(ir.lirc.post_data,0);
+					if(ir.lirc.bit >= lirctable->pre_data_bits + lirctable->bits + lirctable->post_data_bits)
 						ir.state = LIRC_TRAIL_P;
 					else
 						ir.state--;
@@ -233,33 +242,33 @@ void __attribute__ ((section(".text.fastcode"))) LIRC_Encode (void) {
 		case LIRC_REPEAT_P:
 			if(has_repeat && ir.lirc.repeats) {
 				mod_enable = 1;
-				cycles = ir.lirc.prepeat;
+				cycles = lirctable->prepeat;
 				ir.state++;
 				break;
 		case LIRC_REPEAT_S:
 				mod_enable = 0;
-				cycles = ir.lirc.srepeat;
+				cycles = lirctable->srepeat;
 				ir.state++;
 				break;
 			}
 			ir.state = LIRC_TRAIL_P;
 		case LIRC_TRAIL_P:
-			if(ir.lirc.ptrail) {
+			if(lirctable->ptrail) {
 				mod_enable = 1;
-				cycles = ir.lirc.ptrail;
+				cycles = lirctable->ptrail;
 				ir.state++;
 				break;
 			}
 			ir.state++;
 		case LIRC_FOOT_S:
-			if(has_foot && (!ir.lirc.repeats || !(ir.lirc.flags&LIRC_NO_FOOT_REP)) && (!has_repeat || !ir.lirc.repeats)) {
+			if(has_foot && (!ir.lirc.repeats || !(lirctable->flags&LIRC_NO_FOOT_REP)) && (!has_repeat || !ir.lirc.repeats)) {
 				mod_enable = 0;
-				cycles = ir.lirc.sfoot;
+				cycles = lirctable->sfoot;
 				ir.state++;
 				break;
 		case LIRC_FOOT_P:
 				mod_enable = 1;
-				cycles = ir.lirc.pfoot;
+				cycles = lirctable->pfoot;
 				ir.state++;
 				break;
 			}
@@ -271,17 +280,17 @@ void __attribute__ ((section(".text.fastcode"))) LIRC_Encode (void) {
 			ir.lirc.pre_data = ir.lirc.actpre_data;
 			ir.lirc.post_data = ir.lirc.actpost_data;
 			
-			if((ir.lirc.repeat_gap && has_repeat && ir.lirc.repeats) | (is_RF && (ir.lirc.repeats >= ir.lirc.min_repeat)))
-				gap = ir.lirc.repeat_gap;
+			if((lirctable->repeat_gap && has_repeat && ir.lirc.repeats) | (is_RF && (ir.lirc.repeats >= lirctable->min_repeat)))
+				gap = lirctable->repeat_gap;
 			else
-				gap = ir.lirc.gap;
+				gap = lirctable->gap;
 			
 			if(is_const && (ir.lirc.cycles_counter < gap))
 				cycles = gap - ir.lirc.cycles_counter;
 			else
 				cycles = gap;
 			
-			if((ir.lirc.repeats >= ir.lirc.min_repeat) && ir.lirc.stop) {
+			if((ir.lirc.repeats >= lirctable->min_repeat) && ir.lirc.stop) {
 				ir.state = LIRC_IDLE;
 			}
 			else {
@@ -290,12 +299,14 @@ void __attribute__ ((section(".text.fastcode"))) LIRC_Encode (void) {
 				ir.state = LIRC_HEAD_P;
 			}
 	}
+
+	T1MR0 = 15 * cycles;
+
 }
 
 void LIRC_Init(unsigned char map)
 {	
 	unsigned long freq;
-	struct CODE_TABLE_L *lirctable;
 
 	if(map < LIRC.num_tables) {
 		
@@ -305,90 +316,32 @@ void LIRC_Init(unsigned char map)
 		setIR(LIRC_Module);
 		
 		if(lirctable->flags&LIRC_RF) {
-			hi_border = 0;
-			lo_border = 1;
+		  ir.duty_cycle = 50;
 			freq = 20000;
 		}
 		else {
 			freq = lirctable->freq;
 			if(!freq)
 				freq = 38000;
-			
-			if(lirctable->duty_cycle == 0) {	//default 50%
-				hi_border = 1;
-				lo_border = 2;		
-			}
-			else if(lirctable->duty_cycle <= 25) {
-				hi_border = 1;
-				lo_border = 4;
-			}
-			else if(lirctable->duty_cycle <= 33) {
-				hi_border = 1;
-				lo_border = 3;
-			}
-			else if(lirctable->duty_cycle <= 50) {
-				hi_border = 1;
-				lo_border = 2;
-			}
-			else if(lirctable->duty_cycle <= 66) {
-				hi_border = 2;
-				lo_border = 3;
-			}
-			else {	//75%
-				hi_border = 3;
-				lo_border = 4;
+
+			ir.duty_cycle = lirctable->duty_cycle;
+			if(!lirctable->duty_cycle) {	//default 50%
+				ir.duty_cycle = 50;
 			}
 		}
 		
-		T1MR0 = 15000000 / (freq * lo_border);
+		PWM_set_frequency(freq);
+
+		T1MR0 = 15000000 / (freq);
 		
-		
-		ir.lirc.phead = (lirctable->phead * freq) / 1000000;
-		ir.lirc.shead = (lirctable->shead * freq) / 1000000;
-		
-		ir.lirc.plead = (lirctable->plead * freq) / 1000000;
-				
 		ir.lirc.actpre_data = (lirctable->pre_data)<<(32-lirctable->pre_data_bits);
-		ir.lirc.pre_data_bits = lirctable->pre_data_bits;
-		ir.lirc.pre_p = (lirctable->pre_p * freq) / 1000000;
-		ir.lirc.pre_s = (lirctable->pre_s * freq) / 1000000;
-		
-		ir.lirc.post_p = (lirctable->post_p * freq) / 1000000;
-		ir.lirc.post_s = (lirctable->post_s * freq) / 1000000;
 		ir.lirc.actpost_data = (lirctable->post_data)<<(32-lirctable->post_data_bits);
-		ir.lirc.post_data_bits = lirctable->post_data_bits;
-		
-		ir.lirc.ptrail = (lirctable->ptrail * freq) / 1000000;
-		
-		ir.lirc.pfoot = (lirctable->pfoot * freq) / 1000000;
-		ir.lirc.sfoot = (lirctable->sfoot * freq) / 1000000;
-		
-		ir.lirc.prepeat = (lirctable->prepeat * freq) / 1000000;
-		ir.lirc.srepeat = (lirctable->srepeat * freq) / 1000000;
-		
-		ir.lirc.pzero = (lirctable->pzero * freq) / 1000000;
-		ir.lirc.szero = (lirctable->szero * freq) / 1000000;
-		ir.lirc.pone = (lirctable->pone * freq) / 1000000;
-		ir.lirc.sone = (lirctable->sone * freq) / 1000000;
-		ir.lirc.ptwo = (lirctable->ptwo * freq) / 1000000;
-		ir.lirc.stwo = (lirctable->stwo * freq) / 1000000;
-		ir.lirc.pthree = (lirctable->pthree * freq) / 1000000;
-		ir.lirc.sthree = (lirctable->sthree * freq) / 1000000;
-		
-		ir.lirc.gap = (lirctable->gap * freq) / 1000000;
-		ir.lirc.repeat_gap = (lirctable->repeat_gap * freq) / 1000000;
-		
-		ir.lirc.rc6_bit = lirctable->rc6_bit;
-		ir.lirc.flags = lirctable->flags;
-		ir.lirc.bits = lirctable->bits;
-		ir.lirc.min_repeat = lirctable->min_repeat;
-		
+
 		ir.cmd = 0;
 		ir.actcmd = 0;
 		ir.lirc.stop = 0;
 		ir.state = LIRC_IDLE;
 		ir.lirc.bit = 0;
-		ir.lirc.map = map;
 		
 	}
 }
@@ -399,19 +352,19 @@ void LIRC_Send(unsigned long cmd)
 	if(cmd != 0x0000) {
 	
 		ir.lirc.pre_data = ir.lirc.actpre_data;
-		ir.actcmd = cmd<<(32-ir.lirc.bits);
+		ir.actcmd = cmd<<(32-lirctable->bits);
 		ir.lirc.post_data = ir.lirc.actpost_data;
 		ir.lirc.stop = 0;
 		ir.lirc.repeats = 0;
 		 
 		if(ir.toggle & 0x01) {
-			togglemask = (unsigned long)(LIRC.table[ir.lirc.map].toggle_bit_mask) << (32-ir.lirc.post_data_bits);
+			togglemask = (unsigned long)(lirctable->toggle_bit_mask) << (32-lirctable->post_data_bits);
 			ir.lirc.post_data ^= togglemask;
 			
-			togglemask = (unsigned long)(LIRC.table[ir.lirc.map].toggle_bit_mask>>ir.lirc.post_data_bits) << (32-ir.lirc.bits);
+			togglemask = (unsigned long)(lirctable->toggle_bit_mask>>lirctable->post_data_bits) << (32-lirctable->bits);
 			ir.actcmd ^= togglemask;
 			
-			togglemask = (unsigned long)(LIRC.table[ir.lirc.map].toggle_bit_mask>>(ir.lirc.post_data_bits + ir.lirc.bits)) << (32-ir.lirc.pre_data_bits);
+			togglemask = (unsigned long)(lirctable->toggle_bit_mask>>(lirctable->post_data_bits + lirctable->bits)) << (32-lirctable->pre_data_bits);
 			ir.lirc.pre_data ^= togglemask;
 		}
 		
@@ -421,9 +374,9 @@ void LIRC_Send(unsigned long cmd)
 			ir.state++;
 			if(is_RF) {
 				RFasyncmode(true);
-				cc1100_write1(FREQ2,((LIRC.table[ir.lirc.map].freq)>>16) & 0xFF);
-				cc1100_write1(FREQ1,((LIRC.table[ir.lirc.map].freq)>>8) & 0xFF);
-				cc1100_write1(FREQ0,(LIRC.table[ir.lirc.map].freq) & 0xFF);
+				cc1100_write1(FREQ2,((lirctable->freq)>>16) & 0xFF);
+				cc1100_write1(FREQ1,((lirctable->freq)>>8) & 0xFF);
+				cc1100_write1(FREQ0,(lirctable->freq) & 0xFF);
 				cc1100_strobe(STX);
 			}
 			runIR();
@@ -438,7 +391,7 @@ void LIRC_Repeat(void) {
 void LIRC_Stop(void)
 {	
 	ir.lirc.stop = 1;
-    if(ir.lirc.bits){
+	if(lirctable->bits){
 		while(ir.state != LIRC_IDLE);
 	}
 
diff --git a/boop/infrared/ir_lirc.h b/boop/infrared/ir_lirc.h
index 2154aa9..3541a87 100644
--- a/boop/infrared/ir_lirc.h
+++ b/boop/infrared/ir_lirc.h
@@ -28,10 +28,10 @@
 //#define LIRC_SPACE_FIRST		0x0020    /* bits are encoded as space+pulse */
 //#define LIRC_GOLDSTAR			0x0040    /* encoding found on Goldstar remote */
 //#define LIRC_GRUNDIG			0x0080    /* encoding found on Grundig remote */
-//#define LIRC_BO				0x0100    /* encoding found on Bang & Olufsen remote */
-#define LIRC_RF					0x0100    /* RF ASK/OOK modulator */
-//#define LIRC_SERIAL			0x0200    /* serial protocol */
-//#define LIRC_XMP				0x0400    /* XMP protocol */
+#define LIRC_BO				  0x0100    /* encoding found on Bang & Olufsen remote */
+#define LIRC_RF					0x0200    /* RF ASK/OOK modulator */
+//#define LIRC_SERIAL			0x0400    /* serial protocol */
+//#define LIRC_XMP				0x0800    /* XMP protocol */
 
 /* additinal flags: can be orred together with protocol flag */
 //#define REVERSE		0x0800
@@ -40,14 +40,15 @@
 #define LIRC_CONST_LENGTH		0x4000    /* signal length+gap is always constant */
 #define LIRC_REPEAT_HEADER		0x8000    /* header is also sent before repeat code */
 
-#define is_rc6		(ir.lirc.flags & LIRC_RC6)
-#define is_biphase	((ir.lirc.flags & LIRC_RC5) || is_rc6)
-#define is_rcmm		(ir.lirc.flags & LIRC_RCMM)
-#define is_const	(ir.lirc.flags & LIRC_CONST_LENGTH)
-#define is_RF		(ir.lirc.flags & LIRC_RF)
-#define has_header	(ir.lirc.phead && ir.lirc.shead)
-#define has_foot	(ir.lirc.pfoot && ir.lirc.sfoot)
-#define has_repeat	(ir.lirc.prepeat && ir.lirc.srepeat)
+#define is_rc6		(lirctable->flags & LIRC_RC6)
+#define is_biphase	((lirctable->flags & LIRC_RC5) || is_rc6)
+#define is_rcmm		(lirctable->flags & LIRC_RCMM)
+#define is_const	(lirctable->flags & LIRC_CONST_LENGTH)
+#define is_RF		(lirctable->flags & LIRC_RF)
+#define is_BO   (lirctable->flags & LIRC_BO)     /* flag for b&o specific protocol MN2017325 */
+#define has_header	(lirctable->phead && lirctable->shead)
+#define has_foot	(lirctable->pfoot && lirctable->sfoot)
+#define has_repeat	(lirctable->prepeat && lirctable->srepeat)
 
 //FS20 Protocol description see http://fhz4linux.info/tiki-index.php?page=FS20%20Protocol
 #define calcFS20pre(HC1,par1,HC2,par2)						((1<<18) | (HC1<<10) | (par1<<9) | (HC2<<1) | par2)
diff --git a/boop/infrared/ir_nrc17.c b/boop/infrared/ir_nrc17.c
index afbe81f..229caf4 100644
--- a/boop/infrared/ir_nrc17.c
+++ b/boop/infrared/ir_nrc17.c
@@ -115,6 +115,7 @@ void __attribute__ ((section(".text.fastcode"))) NRC17_Encode(void)
 			break;
 
 	}
+	T1MR0 = cycles * NRC17_Module.lo_border * NRC17_Module.tval;
 }
 /*
 void NRC17_CopyMap(unsigned char xtra, unsigned short *map)
diff --git a/boop/infrared/ir_rc5.c b/boop/infrared/ir_rc5.c
index 8c6c6c1..624620f 100644
--- a/boop/infrared/ir_rc5.c
+++ b/boop/infrared/ir_rc5.c
@@ -98,6 +98,7 @@ void __attribute__ ((section(".text.fastcode"))) RC5_Encode (void)
 			}
 			break;
 	}
+	T1MR0 = cycles * RC5_Module.lo_border * RC5_Module.tval;
 }
 
 void RC5_Init(unsigned char map)
diff --git a/boop/infrared/ir_rc6.c b/boop/infrared/ir_rc6.c
index d42b43a..990fa08 100644
--- a/boop/infrared/ir_rc6.c
+++ b/boop/infrared/ir_rc6.c
@@ -148,6 +148,7 @@ void __attribute__ ((section(".text.fastcode"))) RC6_Encode (void)
 			}
 			break;
 	}
+	T1MR0 = cycles * RC6_Module.lo_border * RC6_Module.tval;
 }
 
 void RC6_Init(unsigned char map)
diff --git a/boop/infrared/ir_rca.c b/boop/infrared/ir_rca.c
index 84e95d5..1ba24d7 100644
--- a/boop/infrared/ir_rca.c
+++ b/boop/infrared/ir_rca.c
@@ -120,6 +120,7 @@ void __attribute__ ((section(".text.fastcode"))) RCA_Encode (void)
 			}
 			break;
 	}
+	T1MR0 = cycles * RCA_Module.lo_border * RCA_Module.tval;
 }
 
 void RCA_LoadMap(unsigned char map)
diff --git a/boop/infrared/ir_rcmm.c b/boop/infrared/ir_rcmm.c
index 2424391..e477185 100644
--- a/boop/infrared/ir_rcmm.c
+++ b/boop/infrared/ir_rcmm.c
@@ -117,6 +117,7 @@ void __attribute__ ((section(".text.fastcode"))) RCMM_Encode (void)
 
 		
 	}
+	T1MR0 = cycles * RCMM_Module.lo_border * RCMM_Module.tval;
 }
 
 void RCMM_LoadMap(unsigned char map)
diff --git a/boop/infrared/ir_rec80.c b/boop/infrared/ir_rec80.c
index 6f4f8b1..02fb5f7 100644
--- a/boop/infrared/ir_rec80.c
+++ b/boop/infrared/ir_rec80.c
@@ -117,6 +117,7 @@ void __attribute__ ((section(".text.fastcode"))) REC80_Encode (void)
 			}
 			break;
 	}
+	T1MR0 = cycles * REC80_Module.lo_border * REC80_Module.tval;
 }
 
 void REC80_LoadMap(unsigned char map)
diff --git a/boop/infrared/ir_recs80.c b/boop/infrared/ir_recs80.c
index d15dbd1..cabd96b 100644
--- a/boop/infrared/ir_recs80.c
+++ b/boop/infrared/ir_recs80.c
@@ -90,6 +90,7 @@ void __attribute__ ((section(".text.fastcode"))) RECS80_Encode (void)
 			}
 			break;
 	}
+	T1MR0 = cycles * RECS80_Module.lo_border * RECS80_Module.tval;
 }
 
 void RECS80_Init(unsigned char map)
diff --git a/boop/infrared/ir_sirc.c b/boop/infrared/ir_sirc.c
index 0bcfa8a..dd9e4b4 100644
--- a/boop/infrared/ir_sirc.c
+++ b/boop/infrared/ir_sirc.c
@@ -103,6 +103,8 @@ void __attribute__ ((section(".text.fastcode"))) SIRC_Encode (void)
 			break;
 
 	}
+
+	T1MR0 = cycles * SIRC_Module.lo_border * SIRC_Module.tval;
 }
 
 void SIRC_Init(unsigned char map)
diff --git a/boop/infrared/ir_spaceenc.c b/boop/infrared/ir_spaceenc.c
index d6c0ccc..73b0228 100644
--- a/boop/infrared/ir_spaceenc.c
+++ b/boop/infrared/ir_spaceenc.c
@@ -137,6 +137,7 @@ void __attribute__ ((section(".text.fastcode"))) SPACEENC_Encode (void)
 			}
 			break;
 	}
+	T1MR0 = cycles * SPACEENC_Module.lo_border * SPACEENC_Module.tval;
 }
 
 void SPACEENC_LoadMap(unsigned char map)
diff --git a/boop/infrared/pwm.c b/boop/infrared/pwm.c
new file mode 100644
index 0000000..7c891c6
--- /dev/null
+++ b/boop/infrared/pwm.c
@@ -0,0 +1,82 @@
+/*
+    pwm.c - pwm control
+    Copyright (C) 2017  <telekatz@gmx.de>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "global.h"
+#include "lpc2220.h"
+#include "irq.h"
+
+void PWM_init(void)
+{
+	//Set pin P0.21 IR_OUT as PWM
+	PINSEL1 &= ~(3 << (10));      // IO
+	PINSEL1 |=  (1 << (10));       // PWM5
+
+	PWMTC = 0;			//Timer Counter
+	PWMPR = 0;			//Prescale Register
+	PWMPC = 0;			//Prescale Counter
+
+	PWMMR0 = 416;		// pwm rate
+	PWMMR2 = 0x00;		// pwm value sound
+	PWMMR5 = 0x00;		// pwm value IR
+
+	PWMLER = 0x26;		//Latch Enable
+	PWMMCR = 0x03;		//Match Control
+	PWMPCR |= (1<<13) | (1<<10);
+	PWMTCR = 0x03;
+	PWMTCR = 0x09;
+
+	/*	PWMTC = 0;
+	PWMPR = 7;
+	PWMMR0 = 0x1E6;	// pwm rate
+	PWMMR2 = 0x00;	// pwm value
+	PWMLER = 0x05;
+	PWMPCR = (1<<10);
+*/
+
+	//VICVectAddr0 = (unsigned long)&(soundIRQ);
+	//VICVectCntl0 = VIC_SLOT_EN | INT_SRC_PWM;
+	VICIntSelect |= INT_PWM;
+	VICIntEnable = INT_PWM;
+
+}
+
+void PWM_set_frequency(unsigned long f)
+{
+	if(f<5000) {
+		PWMPR = 7;
+		PWMMR0 = 1875000 / f;
+	} else {
+		PWMPR = 0;
+		PWMMR0 = 15000000 / f;
+	}
+	PWMLER |= 0x01;    //Latch Enable
+
+
+	if(f < 32000) {
+		PWMMCR = 0x03;
+	} else {
+		PWMMCR = 0x02;
+	}
+
+}
+
+void PWM_set_IR_duty_cycle(unsigned char d) {
+	PWMMR5 = (PWMMR0 * d) / 100;
+	PWMLER |= 0x20;
+}
+
diff --git a/boop/infrared/pwm.h b/boop/infrared/pwm.h
new file mode 100644
index 0000000..8d47ff6
--- /dev/null
+++ b/boop/infrared/pwm.h
@@ -0,0 +1,26 @@
+/*
+    pwm.h - pwm control
+    Copyright (C) 2017  <telekatz@gmx.de>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+
+void PWM_init(void);
+void PWM_set_frequency(unsigned long f);
+void PWM_set_IR_duty_cycle(unsigned char d);
+
+
diff --git a/boop/interrupt/irq.c b/boop/interrupt/irq.c
index 9c8f965..331fa55 100644
--- a/boop/interrupt/irq.c
+++ b/boop/interrupt/irq.c
@@ -71,12 +71,12 @@ unsigned restoreIRQ(unsigned oldCPSR)
 // (where's the vector? in lpc2220_rom.ld ?)
 void __attribute__ ((section(".text.fastcode"))) FIQ_Routine (void)
 {
-	while ((PWMIR == 0x01) || (T1IR == 1)) 
+	//while ((PWMIR == 0x01))
 	{
 		if (PWMIR == 0x01)
 			soundIRQ();			// sound, backlight
-		if (T1IR == 1)
-			irIRQ();			// IR
+		//if (T1IR == 1)
+		//	irIRQ();			// IR
 	}
 }
 
diff --git a/boop/main.c b/boop/main.c
index 5f8fba8..9744389 100644
--- a/boop/main.c
+++ b/boop/main.c
@@ -31,6 +31,7 @@
 //#include "sounds.h"
 //#include "sound3.h"
 #include "infrared.h"
+#include "pwm.h"
 #include "codes.h"
 #include "encoders.h"
 #include "ir_selector.h"
@@ -87,8 +88,8 @@ void setSpeed(unsigned char sp)
 
 			VPBDIV = 0x00;
 
-			BCFG0	= 0x100004A0;
-			BCFG2	= 0x100004A0;
+			BCFG0	= 0x10001CA0;
+			BCFG2	= 0x10001CA0;
 			BCFG1	= 0x00000C21;
 			sysInfo |= SYS_TURBO;
 			break;
@@ -102,8 +103,8 @@ void setSpeed(unsigned char sp)
 
 			VPBDIV = 0x02;
 
-			BCFG0	= 0x10000420;
-			BCFG2	= 0x10000420;
+			BCFG0	= 0x10000A20;
+			BCFG2	= 0x10000A20;
 			BCFG1	= 0x00000400;
 			sysInfo &= ~SYS_TURBO;
 			break;
@@ -198,6 +199,8 @@ void cpu_idle ()
 	if(U0SCR)
 		return;
 		
+	return;
+
 	/* only idle mode instead of power down when:
 	 *	* backlight on
 	 *	* IR transmission
@@ -240,7 +243,8 @@ int main(void)
 	FIOSET0 |= (1<<12);
 	FIOCLR0 |= (1<<4);
 
-	setSpeed(SPEED_30);
+	setSpeed(SPEED_60);
+	BFS_Mount();		// flash file system
 
 	lcd_init(0);
 	serial_init();
@@ -251,11 +255,13 @@ int main(void)
 	initKeys();
 
 	initSound();
-	startSoundIRQ();
+	//startSoundIRQ();
 
 	initIR();
 	startIrIRQ();
 
+	PWM_init();
+
 	RF_init();
 	load_RF_setting();
 	startRFIRQ();
@@ -279,10 +285,8 @@ int main(void)
 
 	set_font(BOLDFONT);
 
-	BFS_Mount();		// flash file system
-	load_RC_setting();	// learned remote codes
 	load_setting();		// display settings
-	
+	load_RC_setting();	// learned remote codes
 	
 	// recorded raw IR commands
 	{
diff --git a/boop/rtc/rtc.c b/boop/rtc/rtc.c
index d176f96..271e201 100644
--- a/boop/rtc/rtc.c
+++ b/boop/rtc/rtc.c
@@ -160,7 +160,7 @@ void printTime (unsigned char x, unsigned char y, struct time_* t, unsigned char
 void printDate (unsigned char x, unsigned char y, struct date_* d, unsigned char format)
 {
 	unsigned char f;
-	char s[16];
+	char s[17];
 
 	f=activefont;
 	set_font(SMALLFONT);
diff --git a/boop/serial/serial.c b/boop/serial/serial.c
index de8dc65..e67e5ef 100644
--- a/boop/serial/serial.c
+++ b/boop/serial/serial.c
@@ -52,7 +52,9 @@ extern void uart0_irq(void);
  */
 int serial_flush_input(void)
 {
-	volatile unsigned int tmp;
+	volatile unsigned int tmp=0;
+
+	(void)(tmp);
 
 	/* keep on reading as long as the receiver is not empty */
 	while(RX_DATA(U0LSR)) {
diff --git a/boop/timer/timerfuncs.c b/boop/timer/timerfuncs.c
index f7749c1..7467050 100644
--- a/boop/timer/timerfuncs.c
+++ b/boop/timer/timerfuncs.c
@@ -42,7 +42,7 @@ void startTimerIRQ(void)
 	T0TCR = 0x02;	// reset timer
 	T0TC = 1870;
 	T0PR = 0x0e; 	// 15.000.000 Hz / 15 = 1.000.000 Hz --> PR = 15 - 1 = 0x0e
-	T0MR0 = 5000;	//  1.000.000 Hz / 5000 =  200 Hz = 5 msec intervall time
+	T0MR0 = 250;	//  1.000.000 Hz / 250 =  4000 Hz = 0,25msec intervall time
 	T0MCR = 0x03;	// reset and issue IRQ on TC == MR0
 	T0TCR = 0x01;	// enable timer
 	
diff --git a/boop/timer/timerirq.c b/boop/timer/timerirq.c
index a19cfae..873274f 100644
--- a/boop/timer/timerirq.c
+++ b/boop/timer/timerirq.c
@@ -21,14 +21,37 @@
 #include "timerfuncs.h"
 #include "lcd.h"
 
+#define TIMER_PRESCALER		20
+
 struct CB callbacks[MAX_CB];
 unsigned long* timeouts[MAX_TO];
+unsigned char timerPrescaler = TIMER_PRESCALER;
+unsigned char bl_val, cmp_val;	// backlight PWM
 
-
-// wird alle 5 ms aufgerufen (s. startTimerIRQ() in timerfuncs)
+// wird alle 0.25 ms aufgerufen (s. startTimerIRQ() in timerfuncs)
 // bearbeitet eingetragene "timer"
 void __attribute__ ((section(".text.fastcode"))) timerIRQ(void)
 {
+	// backlight pwm
+	cmp_val += bl_val;
+	if (cmp_val >= 63)
+	{
+		FIODIR0 |= (1<<4);		// sck0/P0.4
+		cmp_val -= 63;
+	}
+	else
+	{
+		FIODIR0 &= ~(1<<4);		// sck0/P0.4
+	}
+
+
+	if(--timerPrescaler) {
+		T0IR = 1;
+		return;
+	}
+	timerPrescaler = TIMER_PRESCALER;
+
+	//5 msec intervall time
 	unsigned int cnt;
 	struct CB *cur_cb;