9 files changed, 3119 insertions, 0 deletions
diff --git a/bootloaders/atmega168/ATmegaBOOT_168.c b/bootloaders/atmega168/ATmegaBOOT_168.c
new file mode 100755
index 0000000..c542af1
--- /dev/null
+++ b/bootloaders/atmega168/ATmegaBOOT_168.c
@@ -0,0 +1,979 @@
+/**********************************************************/
+/* Serial Bootloader for Atmel megaAVR Controllers        */
+/*                                                        */
+/* tested with ATmega8, ATmega128 and ATmega168           */
+/* should work with other mega's, see code for details    */
+/*                                                        */
+/* ATmegaBOOT.c                                           */
+/*                                                        */
+/* 20070626: hacked for Arduino Diecimila (which auto-    */
+/*           resets when a USB connection is made to it)  */
+/*           by D. Mellis                                 */
+/* 20060802: hacked for Arduino by D. Cuartielles         */
+/*           based on a previous hack by D. Mellis        */
+/*           and D. Cuartielles                           */
+/*                                                        */
+/* Monitor and debug functions were added to the original */
+/* code by Dr. Erik Lins, chip45.com. (See below)         */
+/*                                                        */
+/* Thanks to Karl Pitrich for fixing a bootloader pin     */
+/* problem and more informative LED blinking!             */
+/*                                                        */
+/* For the latest version see:                            */
+/* http://www.chip45.com/                                 */
+/*                                                        */
+/* ------------------------------------------------------ */
+/*                                                        */
+/* based on stk500boot.c                                  */
+/* Copyright (c) 2003, Jason P. Kyle                      */
+/* All rights reserved.                                   */
+/* see avr1.org for original file and information         */
+/*                                                        */
+/* 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 2 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, write  */
+/* to the Free Software Foundation, Inc.,                 */
+/* 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA */
+/*                                                        */
+/* Licence can be viewed at                               */
+/* http://www.fsf.org/licenses/gpl.txt                    */
+/*                                                        */
+/* Target = Atmel AVR m128,m64,m32,m16,m8,m162,m163,m169, */
+/* m8515,m8535. ATmega161 has a very small boot block so  */
+/* isn't supported.                                       */
+/*                                                        */
+/* Tested with m168                                       */
+/**********************************************************/
+
+/* $Id$ */
+
+
+/* some includes */
+#include <inttypes.h>
+#include <avr/io.h>
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+#include <avr/wdt.h>
+
+
+/* the current avr-libc eeprom functions do not support the ATmega168 */
+/* own eeprom write/read functions are used instead */
+#ifndef __AVR_ATmega168__
+#include <avr/eeprom.h>
+#endif
+
+/* Use the F_CPU defined in Makefile */
+
+/* 20060803: hacked by DojoCorp */
+/* 20070626: hacked by David A. Mellis to decrease waiting time for auto-reset */
+/* set the waiting time for the bootloader */
+/* get this from the Makefile instead */
+/* #define MAX_TIME_COUNT (F_CPU>>4) */
+
+/* 20070707: hacked by David A. Mellis - after this many errors give up and launch application */
+#define MAX_ERROR_COUNT 5
+
+/* set the UART baud rate */
+/* 20060803: hacked by DojoCorp */
+//#define BAUD_RATE   115200
+#define BAUD_RATE   19200
+
+
+/* SW_MAJOR and MINOR needs to be updated from time to time to avoid warning message from AVR Studio */
+/* never allow AVR Studio to do an update !!!! */
+#define HW_VER	 0x02
+#define SW_MAJOR 0x01
+#define SW_MINOR 0x10
+
+
+/* Adjust to suit whatever pin your hardware uses to enter the bootloader */
+/* ATmega128 has two UARTS so two pins are used to enter bootloader and select UART */
+/* BL0... means UART0, BL1... means UART1 */
+#ifdef __AVR_ATmega128__
+#define BL_DDR  DDRF
+#define BL_PORT PORTF
+#define BL_PIN  PINF
+#define BL0     PINF7
+#define BL1     PINF6
+#else
+/* other ATmegas have only one UART, so only one pin is defined to enter bootloader */
+#define BL_DDR  DDRD
+#define BL_PORT PORTD
+#define BL_PIN  PIND
+#define BL      PIND6
+#endif
+
+
+/* onboard LED is used to indicate, that the bootloader was entered (3x flashing) */
+/* if monitor functions are included, LED goes on after monitor was entered */
+#ifdef __AVR_ATmega128__
+/* Onboard LED is connected to pin PB7 (e.g. Crumb128, PROBOmega128, Savvy128) */
+#define LED_DDR  DDRB
+#define LED_PORT PORTB
+#define LED_PIN  PINB
+#define LED      PINB7
+#else
+/* Onboard LED is connected to pin PB2 (e.g. Crumb8, Crumb168) */
+#define LED_DDR  DDRB
+#define LED_PORT PORTB
+#define LED_PIN  PINB
+/* 20060803: hacked by DojoCorp, LED pin is B5 in Arduino */
+/* #define LED      PINB2 */
+#define LED      PINB5
+#endif
+
+
+/* monitor functions will only be compiled when using ATmega128, due to bootblock size constraints */
+#ifdef __AVR_ATmega128__
+#define MONITOR
+#endif
+
+
+/* define various device id's */
+/* manufacturer byte is always the same */
+#define SIG1	0x1E	// Yep, Atmel is the only manufacturer of AVR micros.  Single source :(
+
+#if defined __AVR_ATmega128__
+#define SIG2	0x97
+#define SIG3	0x02
+#define PAGE_SIZE	0x80U	//128 words
+
+#elif defined __AVR_ATmega64__
+#define SIG2	0x96
+#define SIG3	0x02
+#define PAGE_SIZE	0x80U	//128 words
+
+#elif defined __AVR_ATmega32__
+#define SIG2	0x95
+#define SIG3	0x02
+#define PAGE_SIZE	0x40U	//64 words
+
+#elif defined __AVR_ATmega16__
+#define SIG2	0x94
+#define SIG3	0x03
+#define PAGE_SIZE	0x40U	//64 words
+
+#elif defined __AVR_ATmega8__
+#define SIG2	0x93
+#define SIG3	0x07
+#define PAGE_SIZE	0x20U	//32 words
+
+#elif defined __AVR_ATmega88__
+#define SIG2	0x93
+#define SIG3	0x0a
+#define PAGE_SIZE	0x20U	//32 words
+
+#elif defined __AVR_ATmega168__
+#define SIG2	0x94
+#define SIG3	0x06
+#define PAGE_SIZE	0x40U	//64 words
+
+#elif defined __AVR_ATmega162__
+#define SIG2	0x94
+#define SIG3	0x04
+#define PAGE_SIZE	0x40U	//64 words
+
+#elif defined __AVR_ATmega163__
+#define SIG2	0x94
+#define SIG3	0x02
+#define PAGE_SIZE	0x40U	//64 words
+
+#elif defined __AVR_ATmega169__
+#define SIG2	0x94
+#define SIG3	0x05
+#define PAGE_SIZE	0x40U	//64 words
+
+#elif defined __AVR_ATmega8515__
+#define SIG2	0x93
+#define SIG3	0x06
+#define PAGE_SIZE	0x20U	//32 words
+
+#elif defined __AVR_ATmega8535__
+#define SIG2	0x93
+#define SIG3	0x08
+#define PAGE_SIZE	0x20U	//32 words
+#endif
+
+
+/* function prototypes */
+void putch(char);
+char getch(void);
+void getNch(uint8_t);
+void byte_response(uint8_t);
+void nothing_response(void);
+char gethex(void);
+void puthex(char);
+void flash_led(uint8_t);
+
+/* some variables */
+union address_union {
+    uint16_t word;
+    uint8_t  byte[2];
+} address;
+
+union length_union {
+    uint16_t word;
+    uint8_t  byte[2];
+} length;
+
+struct flags_struct {
+    unsigned eeprom : 1;
+    unsigned rampz  : 1;
+} flags;
+
+uint8_t buff[256];
+uint8_t address_high;
+
+uint8_t pagesz=0x80;
+
+uint8_t i;
+uint8_t bootuart = 0;
+
+uint8_t error_count = 0;
+
+void (*app_start)(void) = 0x0000;
+
+
+/* main program starts here */
+int main(void)
+{
+    uint8_t ch,ch2;
+    uint16_t w;
+
+    asm volatile("nop\n\t");
+
+    /* set pin direction for bootloader pin and enable pullup */
+    /* for ATmega128, two pins need to be initialized */
+#ifdef __AVR_ATmega128__
+    BL_DDR &= ~_BV(BL0);
+    BL_DDR &= ~_BV(BL1);
+    BL_PORT |= _BV(BL0);
+    BL_PORT |= _BV(BL1);
+#else
+    /* We run the bootloader regardless of the state of this pin.  Thus, don't
+    put it in a different state than the other pins.  --DAM, 070709
+    BL_DDR &= ~_BV(BL);
+    BL_PORT |= _BV(BL);
+    */
+#endif
+
+
+#ifdef __AVR_ATmega128__
+    /* check which UART should be used for booting */
+    if(bit_is_clear(BL_PIN, BL0)) {
+      bootuart = 1;
+    }
+    else if(bit_is_clear(BL_PIN, BL1)) {
+      bootuart = 2;
+    }
+#endif
+
+    /* check if flash is programmed already, if not start bootloader anyway */
+    if(pgm_read_byte_near(0x0000) != 0xFF) {
+
+#ifdef __AVR_ATmega128__
+	/* no UART was selected, start application */
+	if(!bootuart) {
+          app_start();
+	}
+#else
+	/* check if bootloader pin is set low */
+	/* we don't start this part neither for the m8, nor m168 */
+	//if(bit_is_set(BL_PIN, BL)) {
+    //      app_start();
+    //    }
+#endif
+    }
+
+#ifdef __AVR_ATmega128__    
+    /* no bootuart was selected, default to uart 0 */
+    if(!bootuart) {
+      bootuart = 1;
+    }
+#endif
+
+
+    /* initialize UART(s) depending on CPU defined */
+#ifdef __AVR_ATmega128__
+    if(bootuart == 1) {
+	UBRR0L = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
+	UBRR0H = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
+	UCSR0A = 0x00;
+	UCSR0C = 0x06;
+	UCSR0B = _BV(TXEN0)|_BV(RXEN0);
+    }
+    if(bootuart == 2) {
+	UBRR1L = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
+	UBRR1H = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
+	UCSR1A = 0x00;
+	UCSR1C = 0x06;
+	UCSR1B = _BV(TXEN1)|_BV(RXEN1);
+    }
+#elif defined __AVR_ATmega163__
+    UBRR = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
+    UBRRHI = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
+    UCSRA = 0x00;
+    UCSRB = _BV(TXEN)|_BV(RXEN);	
+#elif defined __AVR_ATmega168__
+    UBRR0L = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
+    UBRR0H = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
+    UCSR0B = (1<<RXEN0) | (1<<TXEN0);
+    UCSR0C = (1<<UCSZ00) | (1<<UCSZ01);
+
+    /* Enable internal pull-up resistor on pin D0 (RX), in order
+    to supress line noise that prevents the bootloader from
+    timing out (DAM: 20070509) */
+    DDRD &= ~_BV(PIND0);
+    PORTD |= _BV(PIND0);
+#elif defined __AVR_ATmega8__
+  /* m8 */
+  UBRRH = (((F_CPU/BAUD_RATE)/16)-1)>>8; 	// set baud rate
+  UBRRL = (((F_CPU/BAUD_RATE)/16)-1);
+  UCSRB = (1<<RXEN)|(1<<TXEN);  // enable Rx & Tx
+  UCSRC = (1<<URSEL)|(1<<UCSZ1)|(1<<UCSZ0);  // config USART; 8N1
+#else
+    /* m16,m32,m169,m8515,m8535 */
+    UBRRL = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
+    UBRRH = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
+    UCSRA = 0x00;
+    UCSRC = 0x06;
+    UCSRB = _BV(TXEN)|_BV(RXEN);
+#endif
+
+    /* set LED pin as output */
+    LED_DDR |= _BV(LED);
+
+
+    /* flash onboard LED to signal entering of bootloader */
+#ifdef __AVR_ATmega128__
+    // 4x for UART0, 5x for UART1
+    flash_led(NUM_LED_FLASHES + bootuart);
+#else
+    flash_led(NUM_LED_FLASHES);
+#endif
+    
+    /* 20050803: by DojoCorp, this is one of the parts provoking the
+                 system to stop listening, cancelled from the original */
+    //putch('\0');
+
+
+    /* forever loop */
+    for (;;) {
+
+	/* get character from UART */
+	ch = getch();
+
+	/* A bunch of if...else if... gives smaller code than switch...case ! */
+
+	/* Hello is anyone home ? */ 
+	if(ch=='0') {
+	    nothing_response();
+	}
+
+
+	/* Request programmer ID */
+	/* Not using PROGMEM string due to boot block in m128 being beyond 64kB boundry  */
+	/* Would need to selectively manipulate RAMPZ, and it's only 9 characters anyway so who cares.  */
+	else if(ch=='1') {
+	    if (getch() == ' ') {
+		putch(0x14);
+		putch('A');
+		putch('V');
+		putch('R');
+		putch(' ');
+		putch('I');
+		putch('S');
+		putch('P');
+		putch(0x10);
+	    } else {
+		if (++error_count == MAX_ERROR_COUNT)
+		    app_start();
+	    }
+	}
+
+
+	/* AVR ISP/STK500 board commands  DON'T CARE so default nothing_response */
+	else if(ch=='@') {
+	    ch2 = getch();
+	    if (ch2>0x85) getch();
+	    nothing_response();
+	}
+
+
+	/* AVR ISP/STK500 board requests */
+	else if(ch=='A') {
+	    ch2 = getch();
+	    if(ch2==0x80) byte_response(HW_VER);		// Hardware version
+	    else if(ch2==0x81) byte_response(SW_MAJOR);	// Software major version
+	    else if(ch2==0x82) byte_response(SW_MINOR);	// Software minor version
+	    else if(ch2==0x98) byte_response(0x03);		// Unknown but seems to be required by avr studio 3.56
+	    else byte_response(0x00);				// Covers various unnecessary responses we don't care about
+	}
+
+
+	/* Device Parameters  DON'T CARE, DEVICE IS FIXED  */
+	else if(ch=='B') {
+	    getNch(20);
+	    nothing_response();
+	}
+
+
+	/* Parallel programming stuff  DON'T CARE  */
+	else if(ch=='E') {
+	    getNch(5);
+	    nothing_response();
+	}
+
+
+	/* Enter programming mode  */
+	else if(ch=='P') {
+	    nothing_response();
+	}
+
+
+	/* Leave programming mode  */
+	else if(ch=='Q') {
+	    nothing_response();
+	}
+
+
+	/* Erase device, don't care as we will erase one page at a time anyway.  */
+	else if(ch=='R') {
+	    nothing_response();
+	}
+
+
+	/* Set address, little endian. EEPROM in bytes, FLASH in words  */
+	/* Perhaps extra address bytes may be added in future to support > 128kB FLASH.  */
+	/* This might explain why little endian was used here, big endian used everywhere else.  */
+	else if(ch=='U') {
+	    address.byte[0] = getch();
+	    address.byte[1] = getch();
+	    nothing_response();
+	}
+
+
+	/* Universal SPI programming command, disabled.  Would be used for fuses and lock bits.  */
+	else if(ch=='V') {
+	    getNch(4);
+	    byte_response(0x00);
+	}
+
+
+	/* Write memory, length is big endian and is in bytes  */
+	else if(ch=='d') {
+	    length.byte[1] = getch();
+	    length.byte[0] = getch();
+	    flags.eeprom = 0;
+	    if (getch() == 'E') flags.eeprom = 1;
+	    for (w=0;w<length.word;w++) {
+		buff[w] = getch();	                        // Store data in buffer, can't keep up with serial data stream whilst programming pages
+	    }
+	    if (getch() == ' ') {
+		if (flags.eeprom) {		                //Write to EEPROM one byte at a time
+		    for(w=0;w<length.word;w++) {
+#ifdef __AVR_ATmega168__
+			while(EECR & (1<<EEPE));
+			EEAR = (uint16_t)(void *)address.word;
+			EEDR = buff[w];
+			EECR |= (1<<EEMPE);
+			EECR |= (1<<EEPE);
+#else
+			eeprom_write_byte((void *)address.word,buff[w]);
+#endif
+			address.word++;
+		    }			
+		}
+		else {					        //Write to FLASH one page at a time
+		    if (address.byte[1]>127) address_high = 0x01;	//Only possible with m128, m256 will need 3rd address byte. FIXME
+		    else address_high = 0x00;
+#ifdef __AVR_ATmega128__
+		    RAMPZ = address_high;
+#endif
+		    address.word = address.word << 1;	        //address * 2 -> byte location
+		    /* if ((length.byte[0] & 0x01) == 0x01) length.word++;	//Even up an odd number of bytes */
+		    if ((length.byte[0] & 0x01)) length.word++;	//Even up an odd number of bytes
+		    cli();					//Disable interrupts, just to be sure
+			// HACKME: EEPE used to be EEWE
+		    while(bit_is_set(EECR,EEPE));			//Wait for previous EEPROM writes to complete
+		    asm volatile(
+				 "clr	r17		\n\t"	//page_word_count
+				 "lds	r30,address	\n\t"	//Address of FLASH location (in bytes)
+				 "lds	r31,address+1	\n\t"
+				 "ldi	r28,lo8(buff)	\n\t"	//Start of buffer array in RAM
+				 "ldi	r29,hi8(buff)	\n\t"
+				 "lds	r24,length	\n\t"	//Length of data to be written (in bytes)
+				 "lds	r25,length+1	\n\t"
+				 "length_loop:		\n\t"	//Main loop, repeat for number of words in block							 							 
+				 "cpi	r17,0x00	\n\t"	//If page_word_count=0 then erase page
+				 "brne	no_page_erase	\n\t"						 
+				 "wait_spm1:		\n\t"
+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+				 "andi	r16,1           \n\t"
+				 "cpi	r16,1           \n\t"
+				 "breq	wait_spm1       \n\t"
+				 "ldi	r16,0x03	\n\t"	//Erase page pointed to by Z
+				 "sts	%0,r16		\n\t"
+				 "spm			\n\t"							 
+#ifdef __AVR_ATmega163__
+				 ".word 0xFFFF		\n\t"
+				 "nop			\n\t"
+#endif
+				 "wait_spm2:		\n\t"
+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+				 "andi	r16,1           \n\t"
+				 "cpi	r16,1           \n\t"
+				 "breq	wait_spm2       \n\t"									 
+
+				 "ldi	r16,0x11	\n\t"	//Re-enable RWW section
+				 "sts	%0,r16		\n\t"						 			 
+				 "spm			\n\t"
+#ifdef __AVR_ATmega163__
+				 ".word 0xFFFF		\n\t"
+				 "nop			\n\t"
+#endif
+				 "no_page_erase:		\n\t"							 
+				 "ld	r0,Y+		\n\t"	//Write 2 bytes into page buffer
+				 "ld	r1,Y+		\n\t"							 
+							 
+				 "wait_spm3:		\n\t"
+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+				 "andi	r16,1           \n\t"
+				 "cpi	r16,1           \n\t"
+				 "breq	wait_spm3       \n\t"
+				 "ldi	r16,0x01	\n\t"	//Load r0,r1 into FLASH page buffer
+				 "sts	%0,r16		\n\t"
+				 "spm			\n\t"
+							 
+				 "inc	r17		\n\t"	//page_word_count++
+				 "cpi r17,%1	        \n\t"
+				 "brlo	same_page	\n\t"	//Still same page in FLASH
+				 "write_page:		\n\t"
+				 "clr	r17		\n\t"	//New page, write current one first
+				 "wait_spm4:		\n\t"
+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+				 "andi	r16,1           \n\t"
+				 "cpi	r16,1           \n\t"
+				 "breq	wait_spm4       \n\t"
+#ifdef __AVR_ATmega163__
+				 "andi	r30,0x80	\n\t"	// m163 requires Z6:Z1 to be zero during page write
+#endif							 							 
+				 "ldi	r16,0x05	\n\t"	//Write page pointed to by Z
+				 "sts	%0,r16		\n\t"
+				 "spm			\n\t"
+#ifdef __AVR_ATmega163__
+				 ".word 0xFFFF		\n\t"
+				 "nop			\n\t"
+				 "ori	r30,0x7E	\n\t"	// recover Z6:Z1 state after page write (had to be zero during write)
+#endif
+				 "wait_spm5:		\n\t"
+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+				 "andi	r16,1           \n\t"
+				 "cpi	r16,1           \n\t"
+				 "breq	wait_spm5       \n\t"									 
+				 "ldi	r16,0x11	\n\t"	//Re-enable RWW section
+				 "sts	%0,r16		\n\t"						 			 
+				 "spm			\n\t"					 		 
+#ifdef __AVR_ATmega163__
+				 ".word 0xFFFF		\n\t"
+				 "nop			\n\t"
+#endif
+				 "same_page:		\n\t"							 
+				 "adiw	r30,2		\n\t"	//Next word in FLASH
+				 "sbiw	r24,2		\n\t"	//length-2
+				 "breq	final_write	\n\t"	//Finished
+				 "rjmp	length_loop	\n\t"
+				 "final_write:		\n\t"
+				 "cpi	r17,0		\n\t"
+				 "breq	block_done	\n\t"
+				 "adiw	r24,2		\n\t"	//length+2, fool above check on length after short page write
+				 "rjmp	write_page	\n\t"
+				 "block_done:		\n\t"
+				 "clr	__zero_reg__	\n\t"	//restore zero register
+#if defined __AVR_ATmega168__
+				 : "=m" (SPMCSR) : "M" (PAGE_SIZE) : "r0","r16","r17","r24","r25","r28","r29","r30","r31"
+#else
+				 : "=m" (SPMCR) : "M" (PAGE_SIZE) : "r0","r16","r17","r24","r25","r28","r29","r30","r31"
+#endif
+				 );
+		    /* Should really add a wait for RWW section to be enabled, don't actually need it since we never */
+		    /* exit the bootloader without a power cycle anyhow */
+		}
+		putch(0x14);
+		putch(0x10);
+	    } else {
+		if (++error_count == MAX_ERROR_COUNT)
+		    app_start();
+	    }		
+	}
+    
+
+        /* Read memory block mode, length is big endian.  */
+        else if(ch=='t') {
+	    length.byte[1] = getch();
+	    length.byte[0] = getch();
+#if defined __AVR_ATmega128__
+	    if (address.word>0x7FFF) flags.rampz = 1;		// No go with m256, FIXME
+	    else flags.rampz = 0;
+#endif
+	    if (getch() == 'E') flags.eeprom = 1;
+	    else {
+		flags.eeprom = 0;
+		address.word = address.word << 1;	        // address * 2 -> byte location
+	    }
+	    if (getch() == ' ') {		                // Command terminator
+		putch(0x14);
+		for (w=0;w < length.word;w++) {		        // Can handle odd and even lengths okay
+		    if (flags.eeprom) {	                        // Byte access EEPROM read
+#ifdef __AVR_ATmega168__
+			while(EECR & (1<<EEPE));
+			EEAR = (uint16_t)(void *)address.word;
+			EECR |= (1<<EERE);
+			putch(EEDR);
+#else
+			putch(eeprom_read_byte((void *)address.word));
+#endif
+			address.word++;
+		    }
+		    else {
+
+			if (!flags.rampz) putch(pgm_read_byte_near(address.word));
+#if defined __AVR_ATmega128__
+			else putch(pgm_read_byte_far(address.word + 0x10000));
+			// Hmmmm, yuck  FIXME when m256 arrvies
+#endif
+			address.word++;
+		    }
+		}
+		putch(0x10);
+	    }
+	}
+
+
+        /* Get device signature bytes  */
+        else if(ch=='u') {
+	    if (getch() == ' ') {
+		putch(0x14);
+		putch(SIG1);
+		putch(SIG2);
+		putch(SIG3);
+		putch(0x10);
+	    } else {
+		if (++error_count == MAX_ERROR_COUNT)
+		    app_start();
+	    }
+	}
+
+
+        /* Read oscillator calibration byte */
+        else if(ch=='v') {
+	    byte_response(0x00);
+	}
+
+
+#ifdef MONITOR
+
+	/* here come the extended monitor commands by Erik Lins */
+
+	/* check for three times exclamation mark pressed */
+	else if(ch=='!') {
+	    ch = getch();
+	    if(ch=='!') {
+		ch = getch();
+		if(ch=='!') {
+
+#ifdef __AVR_ATmega128__
+		    uint16_t extaddr;
+#endif
+		    uint8_t addrl, addrh;
+
+#ifdef CRUMB128
+		    PGM_P welcome = {"ATmegaBOOT / Crumb128 - (C) J.P.Kyle, E.Lins - 050815\n\r"};
+#elif defined PROBOMEGA128
+		    PGM_P welcome = {"ATmegaBOOT / PROBOmega128 - (C) J.P.Kyle, E.Lins - 050815\n\r"};
+#elif defined SAVVY128
+		    PGM_P welcome = {"ATmegaBOOT / Savvy128 - (C) J.P.Kyle, E.Lins - 050815\n\r"};
+#endif
+
+		    /* turn on LED */
+		    LED_DDR |= _BV(LED);
+		    LED_PORT &= ~_BV(LED);
+
+		    /* print a welcome message and command overview */
+		    for(i=0; welcome[i] != '\0'; ++i) {
+			putch(welcome[i]);
+		    }
+
+		    /* test for valid commands */
+		    for(;;) {
+			putch('\n');
+			putch('\r');
+			putch(':');
+			putch(' ');
+
+			ch = getch();
+			putch(ch);
+
+			/* toggle LED */
+			if(ch == 't') {
+			    if(bit_is_set(LED_PIN,LED)) {
+				LED_PORT &= ~_BV(LED);
+				putch('1');
+			    } else {
+				LED_PORT |= _BV(LED);
+				putch('0');
+			    }
+
+			} 
+
+			/* read byte from address */
+			else if(ch == 'r') {
+			    ch = getch(); putch(ch);
+			    addrh = gethex();
+			    addrl = gethex();
+			    putch('=');
+			    ch = *(uint8_t *)((addrh << 8) + addrl);
+			    puthex(ch);
+			}
+
+			/* write a byte to address  */
+			else if(ch == 'w') {
+			    ch = getch(); putch(ch);
+			    addrh = gethex();
+			    addrl = gethex();
+			    ch = getch(); putch(ch);
+			    ch = gethex();
+			    *(uint8_t *)((addrh << 8) + addrl) = ch;
+
+			}
+
+			/* read from uart and echo back */
+			else if(ch == 'u') {
+			    for(;;) {
+				putch(getch());
+			    }
+			}
+#ifdef __AVR_ATmega128__
+			/* external bus loop  */
+			else if(ch == 'b') {
+			    putch('b');
+			    putch('u');
+			    putch('s');
+			    MCUCR = 0x80;
+			    XMCRA = 0;
+			    XMCRB = 0;
+			    extaddr = 0x1100;
+			    for(;;) {
+				ch = *(volatile uint8_t *)extaddr;
+				if(++extaddr == 0) {
+				    extaddr = 0x1100;
+				}
+			    }
+			}
+#endif
+
+			else if(ch == 'j') {
+			    app_start();
+			}
+
+		    }
+		    /* end of monitor functions */
+
+		}
+	    }
+	}
+	/* end of monitor */
+#endif
+	else if (++error_count == MAX_ERROR_COUNT) {
+	    app_start();
+	}
+    }
+    /* end of forever loop */
+
+}
+
+
+char gethex(void) {
+    char ah,al;
+
+    ah = getch(); putch(ah);
+    al = getch(); putch(al);
+    if(ah >= 'a') {
+	ah = ah - 'a' + 0x0a;
+    } else if(ah >= '0') {
+	ah -= '0';
+    }
+    if(al >= 'a') {
+	al = al - 'a' + 0x0a;
+    } else if(al >= '0') {
+	al -= '0';
+    }
+    return (ah << 4) + al;
+}
+
+
+void puthex(char ch) {
+    char ah,al;
+
+    ah = (ch & 0xf0) >> 4;
+    if(ah >= 0x0a) {
+	ah = ah - 0x0a + 'a';
+    } else {
+	ah += '0';
+    }
+    al = (ch & 0x0f);
+    if(al >= 0x0a) {
+	al = al - 0x0a + 'a';
+    } else {
+	al += '0';
+    }
+    putch(ah);
+    putch(al);
+}
+
+
+void putch(char ch)
+{
+#ifdef __AVR_ATmega128__
+    if(bootuart == 1) {
+	while (!(UCSR0A & _BV(UDRE0)));
+	UDR0 = ch;
+    }
+    else if (bootuart == 2) {
+	while (!(UCSR1A & _BV(UDRE1)));
+	UDR1 = ch;
+    }
+#elif defined __AVR_ATmega168__
+    while (!(UCSR0A & _BV(UDRE0)));
+    UDR0 = ch;
+#else
+    /* m8,16,32,169,8515,8535,163 */
+    while (!(UCSRA & _BV(UDRE)));
+    UDR = ch;
+#endif
+}
+
+
+char getch(void)
+{
+#ifdef __AVR_ATmega128__
+    if(bootuart == 1) {
+	while(!(UCSR0A & _BV(RXC0)));
+	return UDR0;
+    }
+    else if(bootuart == 2) {
+	while(!(UCSR1A & _BV(RXC1)));
+	return UDR1;
+    }
+    return 0;
+#elif defined __AVR_ATmega168__
+    uint32_t count = 0;
+    while(!(UCSR0A & _BV(RXC0))){
+    	/* 20060803 DojoCorp:: Addon coming from the previous Bootloader*/               
+    	/* HACKME:: here is a good place to count times*/
+    	count++;
+    	if (count > MAX_TIME_COUNT)
+    		app_start();
+     }
+    return UDR0;
+#else
+    /* m8,16,32,169,8515,8535,163 */
+    uint32_t count = 0;
+    while(!(UCSRA & _BV(RXC))){
+    	/* 20060803 DojoCorp:: Addon coming from the previous Bootloader*/               
+    	/* HACKME:: here is a good place to count times*/
+    	count++;
+    	if (count > MAX_TIME_COUNT)
+    		app_start();
+     }
+    return UDR;
+#endif
+}
+
+
+void getNch(uint8_t count)
+{
+    uint8_t i;
+    for(i=0;i<count;i++) {
+#ifdef __AVR_ATmega128__
+	if(bootuart == 1) {
+	    while(!(UCSR0A & _BV(RXC0)));
+	    UDR0;
+	} 
+	else if(bootuart == 2) {
+	    while(!(UCSR1A & _BV(RXC1)));
+	    UDR1;
+	}
+#elif defined __AVR_ATmega168__
+	while(!(UCSR0A & _BV(RXC0)));
+	UDR0;
+#else
+	/* m8,16,32,169,8515,8535,163 */
+   	/* 20060803 DojoCorp:: Addon coming from the previous Bootloader*/               
+	//while(!(UCSRA & _BV(RXC)));
+	//UDR;
+    uint8_t i;
+    for(i=0;i<count;i++) {
+    	getch(); // need to handle time out
+    }
+#endif		
+    }
+}
+
+
+void byte_response(uint8_t val)
+{
+    if (getch() == ' ') {
+	putch(0x14);
+	putch(val);
+	putch(0x10);
+    } else {
+	if (++error_count == MAX_ERROR_COUNT)
+	    app_start();
+    }
+}
+
+
+void nothing_response(void)
+{
+    if (getch() == ' ') {
+	putch(0x14);
+	putch(0x10);
+    } else {
+	if (++error_count == MAX_ERROR_COUNT)
+	    app_start();
+    }
+}
+
+void flash_led(uint8_t count)
+{
+    /* flash onboard LED three times to signal entering of bootloader */
+	/* l needs to be volatile or the delay loops below might get
+	optimized away if compiling with optimizations (DAM). */
+    volatile uint32_t l;
+
+    if (count == 0) {
+      count = 3;
+    }
+    
+    for (i = 0; i < count; ++i) {
+	LED_PORT |= _BV(LED);
+	for(l = 0; l < (F_CPU / 1000); ++l);
+	LED_PORT &= ~_BV(LED);
+	for(l = 0; l < (F_CPU / 1000); ++l);
+    }
+}
+
+
+/* end of file ATmegaBOOT.c */
diff --git a/bootloaders/atmega168/ATmegaBOOT_168_diecimila.hex b/bootloaders/atmega168/ATmegaBOOT_168_diecimila.hex
new file mode 100644
index 0000000..26bf3e5
--- /dev/null
+++ b/bootloaders/atmega168/ATmegaBOOT_168_diecimila.hex
@@ -0,0 +1,117 @@
+:103800000C94341C0C944F1C0C944F1C0C944F1CA7
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diff --git a/bootloaders/atmega168/ATmegaBOOT_168_ng.hex b/bootloaders/atmega168/ATmegaBOOT_168_ng.hex
new file mode 100644
index 0000000..0cb6879
--- /dev/null
+++ b/bootloaders/atmega168/ATmegaBOOT_168_ng.hex
@@ -0,0 +1,117 @@
+:103800000C94341C0C944F1C0C944F1C0C944F1CA7
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diff --git a/bootloaders/atmega168/Makefile b/bootloaders/atmega168/Makefile
new file mode 100755
index 0000000..669879b
--- /dev/null
+++ b/bootloaders/atmega168/Makefile
@@ -0,0 +1,92 @@
+# Makefile for ATmegaBOOT
+# E.Lins, 18.7.2005
+# $Id$
+
+# Instructions
+#
+# To build the bootloader for the Diecimila:
+# make diecimila
+#
+# To build the bootloader for the NG/Mini:
+# make ng
+#
+# To burn the bootloader:
+# make TARGET=diecimila isp
+# make TARGET=ng isp
+
+# program name should not be changed...
+PROGRAM    = ATmegaBOOT_168
+
+# enter the target CPU frequency
+AVR_FREQ   = 16000000L
+
+# enter the parameters for the avrdude isp tool
+ISPTOOL	   = stk500v2
+ISPPORT	   = usb
+ISPSPEED   = -b 115200
+
+MCU_TARGET = atmega168
+LDSECTION  = --section-start=.text=0x3800
+
+# the efuse should really be 0xf8; since, however, only the lower
+# three bits of that byte are used on the atmega168, avrdude gets
+# confused if you specify 1's for the higher bits, see:
+# http://tinker.it/now/2007/02/24/the-tale-of-avrdude-atmega168-and-extended-bits-fuses/
+#
+# similarly, the lock bits should be 0xff instead of 0x3f (to
+# unlock the bootloader section) and 0xcf instead of 0x0f (to
+# lock it), but since the high two bits of the lock byte are
+# unused, avrdude would get confused.
+ISPFUSES    = avrdude -c $(ISPTOOL) -p m168 -P $(ISPPORT) $(ISPSPEED) -e -u -U lock:w:0x3f:m -U efuse:w:0x00:m -U hfuse:w:0xdd:m -U lfuse:w:0xff:m
+ISPFLASH    = avrdude -c $(ISPTOOL) -p m168 -P $(ISPPORT) $(ISPSPEED) -U flash:w:$(PROGRAM)_$(TARGET).hex -U lock:w:0x0f:m
+
+
+OBJ        = $(PROGRAM).o
+OPTIMIZE   = -O2
+
+DEFS       = 
+LIBS       =
+
+CC         = avr-gcc
+
+
+# Override is only needed by avr-lib build system.
+
+override CFLAGS        = -g -Wall $(OPTIMIZE) -mmcu=$(MCU_TARGET) -DF_CPU=$(AVR_FREQ) $(DEFS)
+override LDFLAGS       = -Wl,$(LDSECTION)
+#override LDFLAGS       = -Wl,-Map,$(PROGRAM).map,$(LDSECTION)
+
+OBJCOPY        = avr-objcopy
+OBJDUMP        = avr-objdump
+
+all:
+
+diecimila: TARGET = diecimila
+diecimila: CFLAGS += '-DMAX_TIME_COUNT=F_CPU>>4' '-DNUM_LED_FLASHES=1'
+diecimila: $(PROGRAM)_diecimila.hex
+
+ng: TARGET = ng
+ng: CFLAGS += '-DMAX_TIME_COUNT=F_CPU>>1' '-DNUM_LED_FLASHES=3'
+ng: $(PROGRAM)_ng.hex
+
+isp: $(PROGRAM)_$(TARGET).hex
+	$(ISPFUSES)
+	$(ISPFLASH)
+
+%.elf: $(OBJ)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
+
+clean:
+	rm -rf *.o *.elf *.lst *.map *.sym *.lss *.eep *.srec *.bin *.hex
+
+%.lst: %.elf
+	$(OBJDUMP) -h -S $< > $@
+
+%.hex: %.elf
+	$(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.srec: %.elf
+	$(OBJCOPY) -j .text -j .data -O srec $< $@
+
+%.bin: %.elf
+	$(OBJCOPY) -j .text -j .data -O binary $< $@
diff --git a/bootloaders/atmega8/ATmegaBOOT.c b/bootloaders/atmega8/ATmegaBOOT.c
new file mode 100755
index 0000000..17977e6
--- /dev/null
+++ b/bootloaders/atmega8/ATmegaBOOT.c
@@ -0,0 +1,507 @@
+/**********************************************************/
+/* Serial Bootloader for Atmel mega8 AVR Controller       */
+/*                                                        */
+/* ATmegaBOOT.c                                           */
+/*                                                        */
+/* Copyright (c) 2003, Jason P. Kyle                      */
+/*                                                        */
+/* Hacked by DojoCorp - ZGZ - MMX - IVR                   */
+/* Hacked by David A. Mellis                              */
+/*                                                        */
+/* 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 2 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, write  */
+/* to the Free Software Foundation, Inc.,                 */
+/* 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA */
+/*                                                        */
+/* Licence can be viewed at                               */
+/* http://www.fsf.org/licenses/gpl.txt                    */
+/*                                                        */
+/* Target = Atmel AVR m8                                  */
+/**********************************************************/
+
+#include <inttypes.h>
+#include <avr/io.h>
+#include <avr/pgmspace.h>
+#include <avr/eeprom.h>
+#include <avr/interrupt.h>
+#include <avr/delay.h>
+
+//#define F_CPU			16000000
+
+/* We, Malmoitians, like slow interaction
+ * therefore the slow baud rate ;-)
+ */
+//#define BAUD_RATE		9600
+
+/* 6.000.000 is more or less 8 seconds at the
+ * speed configured here
+ */
+//#define MAX_TIME_COUNT	6000000
+#define MAX_TIME_COUNT (F_CPU>>1)
+///#define MAX_TIME_COUNT_MORATORY	1600000
+
+/* SW_MAJOR and MINOR needs to be updated from time to time to avoid warning message from AVR Studio */
+#define HW_VER	 0x02
+#define SW_MAJOR 0x01
+#define SW_MINOR 0x12
+
+// AVR-GCC compiler compatibility
+// avr-gcc compiler v3.1.x and older doesn't support outb() and inb()
+//      if necessary, convert outb and inb to outp and inp
+#ifndef outb
+	#define outb(sfr,val)  (_SFR_BYTE(sfr) = (val))
+#endif
+#ifndef inb
+	#define inb(sfr) _SFR_BYTE(sfr)
+#endif
+
+/* defines for future compatibility */
+#ifndef cbi
+	#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
+#endif
+#ifndef sbi
+	#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
+#endif
+
+/* Adjust to suit whatever pin your hardware uses to enter the bootloader */
+#define eeprom_rb(addr)   eeprom_read_byte ((uint8_t *)(addr))
+#define eeprom_rw(addr)   eeprom_read_word ((uint16_t *)(addr))
+#define eeprom_wb(addr, val)   eeprom_write_byte ((uint8_t *)(addr), (uint8_t)(val))
+
+/* Onboard LED is connected to pin PB5 */
+#define LED_DDR  DDRB
+#define LED_PORT PORTB
+#define LED_PIN  PINB
+#define LED      PINB5
+
+
+#define SIG1	0x1E	// Yep, Atmel is the only manufacturer of AVR micros.  Single source :(
+#define SIG2	0x93
+#define SIG3	0x07
+#define PAGE_SIZE	0x20U	//32 words
+
+
+void putch(char);
+char getch(void);
+void getNch(uint8_t);
+void byte_response(uint8_t);
+void nothing_response(void);
+
+union address_union {
+  uint16_t word;
+  uint8_t  byte[2];
+} address;
+
+union length_union {
+  uint16_t word;
+  uint8_t  byte[2];
+} length;
+
+struct flags_struct {
+  unsigned eeprom : 1;
+  unsigned rampz  : 1;
+} flags;
+
+uint8_t buff[256];
+//uint8_t address_high;
+
+uint8_t pagesz=0x80;
+
+uint8_t i;
+//uint8_t bootuart0=0,bootuart1=0;
+
+
+void (*app_start)(void) = 0x0000;
+
+int main(void)
+{
+  uint8_t ch,ch2;
+  uint16_t w;
+
+  //cbi(BL_DDR,BL);
+  //sbi(BL_PORT,BL);
+
+  asm volatile("nop\n\t");
+
+  /* check if flash is programmed already, if not start bootloader anyway */
+  //if(pgm_read_byte_near(0x0000) != 0xFF) {
+
+    /* check if bootloader pin is set low */
+    //if(bit_is_set(BL_PIN,BL)) app_start();
+  //}
+
+  /* initialize UART(s) depending on CPU defined */
+  /* m8 */
+  UBRRH = (((F_CPU/BAUD_RATE)/16)-1)>>8; 	// set baud rate
+  UBRRL = (((F_CPU/BAUD_RATE)/16)-1);
+  UCSRB = (1<<RXEN)|(1<<TXEN);  // enable Rx & Tx
+  UCSRC = (1<<URSEL)|(1<<UCSZ1)|(1<<UCSZ0);  // config USART; 8N1
+
+  //UBRRL = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
+  //UBRRH = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
+  //UCSRA = 0x00;
+  //UCSRC = 0x86;
+  //UCSRB = _BV(TXEN)|_BV(RXEN);
+
+
+  /* this was giving uisp problems, so I removed it; without it, the boot
+     works on with uisp and avrdude on the mac (at least). */
+  //putch('\0');
+
+  //uint32_t l;
+  //uint32_t time_count;
+  //time_count=0;
+
+  /* set LED pin as output */
+  sbi(LED_DDR,LED);
+	for (i = 0; i < 16; i++) {
+		outb(LED_PORT, inb(LED_PORT) ^ _BV(LED));
+		_delay_loop_2(0);
+	}
+	
+	//for (l=0; l<40000000; l++)
+		//outb(LED_PORT, inb(LED_PORT) ^= _BV(LED));
+
+  /* flash onboard LED three times to signal entering of bootloader */
+  //for(i=0; i<3; ++i) {
+    //for(l=0; l<40000000; ++l);
+    //sbi(LED_PORT,LED);
+    //for(l=0; l<40000000; ++l);
+    //cbi(LED_PORT,LED);
+  //}
+
+ /* see comment at previous call to putch() */
+ //putch('\0'); // this line is needed for the synchronization of the programmer
+
+  /* forever */
+  for (;;) {
+    //if((inb(UCSRA) & _BV(RXC))){
+    /* get character from UART */
+		ch = getch();
+		
+		/* A bunch of if...else if... gives smaller code than switch...case ! */
+	
+		/* Hello is anyone home ? */ 
+		if(ch=='0') {
+		  nothing_response();
+		}
+	
+		/* Request programmer ID */
+		/* Not using PROGMEM string due to boot block in m128 being beyond 64kB boundry  */
+		/* Would need to selectively manipulate RAMPZ, and it's only 9 characters anyway so who cares.  */
+		else if(ch=='1') {
+			if (getch() == ' ') {
+				putch(0x14);
+				putch('A');
+				putch('V');
+				putch('R');
+				putch(' ');
+				putch('I');
+				putch('S');
+				putch('P');
+				putch(0x10);
+		  }
+		}
+	
+		/* AVR ISP/STK500 board commands  DON'T CARE so default nothing_response */
+		else if(ch=='@') {
+		  ch2 = getch();
+		  if (ch2>0x85) getch();
+		  nothing_response();
+		}
+	
+		/* AVR ISP/STK500 board requests */
+		else if(ch=='A') {
+		  ch2 = getch();
+		  if(ch2==0x80) byte_response(HW_VER);		// Hardware version
+		  else if(ch2==0x81) byte_response(SW_MAJOR);	// Software major version
+		  else if(ch2==0x82) byte_response(SW_MINOR);	// Software minor version
+		  //else if(ch2==0x98) byte_response(0x03);		// Unknown but seems to be required by avr studio 3.56
+		  else byte_response(0x00);				// Covers various unnecessary responses we don't care about
+		}
+	
+		/* Device Parameters  DON'T CARE, DEVICE IS FIXED  */
+		else if(ch=='B') {
+		  getNch(20);
+		  nothing_response();
+		}
+	
+		/* Parallel programming stuff  DON'T CARE  */
+		else if(ch=='E') {
+		  getNch(5);
+		  nothing_response();
+		}
+	
+		/* Enter programming mode  */
+		else if(ch=='P') {
+		  nothing_response();
+		  // FIXME: modified only here by DojoCorp, Mumbai, India, 20050626
+		  //time_count=0; // exted the delay once entered prog.mode
+		}
+	
+		/* Leave programming mode  */
+		else if(ch=='Q') {
+		  nothing_response();
+		  //time_count=MAX_TIME_COUNT_MORATORY; 	// once the programming is done, 
+												// we should start the application
+												// but uisp has problems with this,
+												// therefore we just change the times
+												// and give the programmer 1 sec to react
+		}
+	
+		/* Erase device, don't care as we will erase one page at a time anyway.  */
+		else if(ch=='R') {
+		  nothing_response();
+		}
+	
+		/* Set address, little endian. EEPROM in bytes, FLASH in words  */
+		/* Perhaps extra address bytes may be added in future to support > 128kB FLASH.  */
+		/* This might explain why little endian was used here, big endian used everywhere else.  */
+		else if(ch=='U') {
+		  address.byte[0] = getch();
+		  address.byte[1] = getch();
+		  nothing_response();
+		}
+	
+		/* Universal SPI programming command, disabled.  Would be used for fuses and lock bits.  */
+		else if(ch=='V') {
+		  getNch(4);
+		  byte_response(0x00);
+		}
+	
+		/* Write memory, length is big endian and is in bytes  */
+		else if(ch=='d') {
+		  length.byte[1] = getch();
+		  length.byte[0] = getch();
+		  flags.eeprom = 0;
+		  if (getch() == 'E') flags.eeprom = 1;
+		  for (w=0;w<length.word;w++) {
+		    buff[w] = getch();	                        // Store data in buffer, can't keep up with serial data stream whilst programming pages
+		  }
+		  if (getch() == ' ') {
+				if (flags.eeprom) {		                //Write to EEPROM one byte at a time
+					for(w=0;w<length.word;w++) {
+						eeprom_wb(address.word,buff[w]);
+						address.word++;
+					}			
+				} else {					        //Write to FLASH one page at a time
+					//if (address.byte[1]>127) address_high = 0x01;	//Only possible with m128, m256 will need 3rd address byte. FIXME
+					//else address_high = 0x00;
+			
+					//address.word = address.word << 1;	        //address * 2 -> byte location
+					//if ((length.byte[0] & 0x01)) length.word++;	//Even up an odd number of bytes
+					cli();					//Disable interrupts, just to be sure
+					while(bit_is_set(EECR,EEWE));			//Wait for previous EEPROM writes to complete
+					asm volatile(
+							 "clr	r17		\n\t"	//page_word_count
+							 "lds	r30,address	\n\t"	//Address of FLASH location (in words)
+							 "lds	r31,address+1	\n\t"
+							 "lsl r30				\n\t"  //address * 2 -> byte location
+							 "rol r31				\n\t" 
+							 "ldi	r28,lo8(buff)	\n\t"	//Start of buffer array in RAM
+							 "ldi	r29,hi8(buff)	\n\t"
+							 "lds	r24,length	\n\t"	//Length of data to be written (in bytes)
+							 "lds	r25,length+1	\n\t"
+							 "sbrs r24,0		\n\t"  //Even up an odd number of bytes
+							 "rjmp length_loop		\n\t"
+							 "adiw r24,1		\n\t"
+							 "length_loop:		\n\t"	//Main loop, repeat for number of words in block							 							 
+							 "cpi	r17,0x00	\n\t"	//If page_word_count=0 then erase page
+							 "brne	no_page_erase	\n\t"						 
+							 "rcall  wait_spm		\n\t"
+//							 "wait_spm1:		\n\t"
+//							 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+//							 "andi	r16,1           \n\t"
+//							 "cpi	r16,1           \n\t"
+//							 "breq	wait_spm1       \n\t"
+							 "ldi	r16,0x03	\n\t"	//Erase page pointed to by Z
+							 "sts	%0,r16		\n\t"
+							 "spm			\n\t"							 
+							 "rcall  wait_spm		\n\t"
+//							 "wait_spm2:		\n\t"
+//							 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+//							 "andi	r16,1           \n\t"
+//							 "cpi	r16,1           \n\t"
+//							 "breq	wait_spm2       \n\t"									 
+							 "ldi	r16,0x11	\n\t"	//Re-enable RWW section
+							 "sts	%0,r16		\n\t"						 			 
+							 "spm			\n\t"
+							 "no_page_erase:		\n\t"							 
+							 "ld	r0,Y+		\n\t"	//Write 2 bytes into page buffer
+							 "ld	r1,Y+		\n\t"							 
+										 
+							 "rcall  wait_spm		\n\t"
+//							 "wait_spm3:		\n\t"
+//							 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+//							 "andi	r16,1           \n\t"
+//							 "cpi	r16,1           \n\t"
+//							 "breq	wait_spm3       \n\t"
+							 "ldi	r16,0x01	\n\t"	//Load r0,r1 into FLASH page buffer
+							 "sts	%0,r16		\n\t"
+							 "spm			\n\t"
+										 
+							 "inc	r17		\n\t"	//page_word_count++
+							 "cpi r17,%1	        \n\t"
+							 "brlo	same_page	\n\t"	//Still same page in FLASH
+							 "write_page:		\n\t"
+							 "clr	r17		\n\t"	//New page, write current one first
+							 "rcall  wait_spm		\n\t"
+//							 "wait_spm4:		\n\t"
+//							 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+//							 "andi	r16,1           \n\t"
+//							 "cpi	r16,1           \n\t"
+//							 "breq	wait_spm4       \n\t"
+							 "ldi	r16,0x05	\n\t"	//Write page pointed to by Z
+							 "sts	%0,r16		\n\t"
+							 "spm			\n\t"
+							 "rcall  wait_spm		\n\t"
+//							 "wait_spm5:		\n\t"
+//							 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+//							 "andi	r16,1           \n\t"
+//							 "cpi	r16,1           \n\t"
+//							 "breq	wait_spm5       \n\t"									 
+							 "ldi	r16,0x11	\n\t"	//Re-enable RWW section
+							 "sts	%0,r16		\n\t"						 			 
+							 "spm			\n\t"					 		 
+							 "same_page:		\n\t"							 
+							 "adiw	r30,2		\n\t"	//Next word in FLASH
+							 "sbiw	r24,2		\n\t"	//length-2
+							 "breq	final_write	\n\t"	//Finished
+							 "rjmp	length_loop	\n\t"
+							 
+							 "wait_spm:  \n\t"
+							 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+							 "andi	r16,1           \n\t"
+							 "cpi	r16,1           \n\t"
+							 "breq	wait_spm       \n\t"
+							 "ret			\n\t"
+							 
+							 "final_write:		\n\t"
+							 "cpi	r17,0		\n\t"
+							 "breq	block_done	\n\t"
+							 "adiw	r24,2		\n\t"	//length+2, fool above check on length after short page write
+							 "rjmp	write_page	\n\t"
+							 "block_done:		\n\t"
+							 "clr	__zero_reg__	\n\t"	//restore zero register
+							 : "=m" (SPMCR) : "M" (PAGE_SIZE) : "r0","r16","r17","r24","r25","r28","r29","r30","r31");
+			
+					/* Should really add a wait for RWW section to be enabled, don't actually need it since we never */
+					/* exit the bootloader without a power cycle anyhow */
+				}
+				putch(0x14);
+				putch(0x10);
+			}		
+		}
+	
+		/* Read memory block mode, length is big endian.  */
+		else if(ch=='t') {
+		  length.byte[1] = getch();
+		  length.byte[0] = getch();
+		  if (getch() == 'E') flags.eeprom = 1;
+		  else {
+				flags.eeprom = 0;
+				address.word = address.word << 1;	        // address * 2 -> byte location
+		  }
+		  if (getch() == ' ') {		                // Command terminator
+				putch(0x14);
+				for (w=0;w < length.word;w++) {		        // Can handle odd and even lengths okay
+					if (flags.eeprom) {	                        // Byte access EEPROM read
+						putch(eeprom_rb(address.word));
+						address.word++;
+					} else {	
+						if (!flags.rampz) putch(pgm_read_byte_near(address.word));
+						address.word++;
+					}
+				}
+				putch(0x10);
+		  }
+		}
+	
+		/* Get device signature bytes  */
+		else if(ch=='u') {
+		  if (getch() == ' ') {
+				putch(0x14);
+				putch(SIG1);
+				putch(SIG2);
+				putch(SIG3);
+				putch(0x10);
+		  }
+		}
+	
+		/* Read oscillator calibration byte */
+		else if(ch=='v') {
+		  byte_response(0x00);
+		}
+//    } else {
+//			time_count++;
+//			if (time_count>=MAX_TIME_COUNT) {
+//				app_start();
+//			}
+//		}
+	} /* end of forever loop */
+}
+
+void putch(char ch)
+{
+  /* m8 */
+  while (!(inb(UCSRA) & _BV(UDRE)));
+  outb(UDR,ch);
+}
+
+char getch(void)
+{
+  /* m8 */
+	uint32_t count = 0;
+  while(!(inb(UCSRA) & _BV(RXC))) {
+		/* HACKME:: here is a good place to count times*/
+		count++;
+		if (count > MAX_TIME_COUNT)
+			app_start();
+  }
+  return (inb(UDR));
+}
+
+void getNch(uint8_t count)
+{
+  uint8_t i;
+  for(i=0;i<count;i++) {
+    /* m8 */
+    //while(!(inb(UCSRA) & _BV(RXC)));
+    //inb(UDR);
+		getch(); // need to handle time out
+  }
+}
+
+void byte_response(uint8_t val)
+{
+  if (getch() == ' ') {
+    putch(0x14);
+    putch(val);
+    putch(0x10);
+  }
+}
+
+void nothing_response(void)
+{
+  if (getch() == ' ') {
+    putch(0x14);
+    putch(0x10);
+  }
+}
+
+/* end of file ATmegaBOOT.c */
+
+
+
diff --git a/bootloaders/atmega8/ATmegaBOOT.hex b/bootloaders/atmega8/ATmegaBOOT.hex
new file mode 100644
index 0000000..6190d48
--- /dev/null
+++ b/bootloaders/atmega8/ATmegaBOOT.hex
@@ -0,0 +1,66 @@
+:101C000012C02BC02AC029C028C027C026C025C0AA
+:101C100024C023C022C021C020C01FC01EC01DC0C0
+:101C20001CC01BC01AC011241FBECFE5D4E0DEBF0C
+:101C3000CDBF10E0A0E6B0E0E8EEFFE102C0059005
+:101C40000D92A236B107D9F711E0A2E6B0E001C0CB
+:101C50001D92AA36B107E1F74FC0D2CFEF92FF92A3
+:101C60000F931F93EE24FF24870113C00894E11CF7
+:101C7000F11C011D111D81E0E81682E1F8068AE7DA
+:101C8000080780E0180728F0E0916200F0916300F7
+:101C900009955F9BEBCF8CB1992787FD90951F919C
+:101CA0000F91FF90EF9008955D9BFECF8CB9089542
+:101CB000D5DF803221F484E1F7DF80E1F5DF08959C
+:101CC0001F93182FCBDF803231F484E1EDDF812FB9
+:101CD000EBDF80E1E9DF1F9108951F93CF93DF933E
+:101CE000182FC0E0D0E002C0B9DF2196C117E0F3A1
+:101CF000DF91CF911F910895CFE5D4E0DEBFCDBF36
+:101D0000000010BC83E389B988E18AB986E880BD08
+:101D1000BD9A1092680130E2E0E0F0E02FE088B375
+:101D2000832788BBCF010197F1F7215027FFF7CF19
+:101D300020E12093680192DF803381F1813399F4AF
+:101D40008DDF8032C1F784E1AFDF81E4ADDF86E56E
+:101D5000ABDF82E5A9DF80E2A7DF89E4A5DF83E5C9
+:101D6000A3DF80E5C7C0803429F478DF8638B0F07F
+:101D700075DF14C0813471F471DF803811F482E0B2
+:101D80001DC1813811F481E019C1823809F015C1F3
+:101D900082E114C1823421F484E19FDF89DFCBCF5B
+:101DA000853411F485E0F9CF8035C1F38135B1F385
+:101DB0008235A1F3853539F451DF809364004EDF1D
+:101DC00080936500EBCF863519F484E086DFF5C09B
+:101DD000843609F093C042DF809367013FDF809330
+:101DE0006601809169018E7F8093690137DF8534B8
+:101DF00029F480916901816080936901C0E0D0E09D
+:101E000006E610E005C02ADFF80181938F012196D4
+:101E10008091660190916701C817D907A0F31EDF72
+:101E2000803209F088CF8091690180FF1FC020E0D7
+:101E300030E0E6E6F0E012C0A0916400B0916500E9
+:101E40008191082EC5D08091640090916500019623
+:101E500090936500809364002F5F3F4F80916601EF
+:101E6000909167012817390738F343C0F894E19936
+:101E7000FECF1127E0916400F0916500EE0FFF1F87
+:101E8000C6E6D0E0809166019091670180FF01C0B5
+:101E90000196103051F422D003E000935700E895EA
+:101EA0001DD001E100935700E8950990199016D0D4
+:101EB00001E000935700E8951395103258F0112770
+:101EC0000DD005E000935700E89508D001E100939C
+:101ED0005700E8953296029739F0DBCF0091570012
+:101EE00001700130D9F30895103011F00296E7CF58
+:101EF000112484E1D9DE80E1D7DE1DCF843709F0DB
+:101F00004BC0ACDE80936701A9DE80936601A6DE3C
+:101F100090916901853421F49160909369010DC01D
+:101F20009E7F909369018091640090916500880F75
+:101F3000991F909365008093640090DE803209F0D1
+:101F4000FACE84E1B1DEC0E0D0E01EC0809169012C
+:101F500080FF07C0A0916400B091650031D0802D52
+:101F600008C081FD07C0E0916400F0916500E49134
+:101F70008E2F9ADE80916400909165000196909377
+:101F800065008093640021968091660190916701BD
+:101F9000C817D907D8F2AFCF853761F45FDE80323A
+:101FA00009F0C9CE84E180DE8EE17EDE83E97CDE4D
+:101FB00087E0A0CF863709F0BECE80E081DEBBCEC1
+:101FC000E199FECFBFBBAEBBE09A11960DB208956A
+:101FD000E199FECFBFBBAEBB0DBA11960FB6F89418
+:081FE000E29AE19A0FBE089598
+:021FE800800077
+:0400000300001C00DD
+:00000001FF
diff --git a/bootloaders/atmega8/Makefile b/bootloaders/atmega8/Makefile
new file mode 100644
index 0000000..8c0edd3
--- /dev/null
+++ b/bootloaders/atmega8/Makefile
@@ -0,0 +1,88 @@
+# Makefile for ATmegaBOOT
+# E.Lins, 2004-10-14
+
+# program name should not be changed...
+PROGRAM    = ATmegaBOOT
+
+PRODUCT=atmega8
+
+# enter the parameters for the UISP isp tool
+ISPPARAMS  = -dprog=stk500 -dserial=$(SERIAL) -dspeed=115200
+
+
+#DIRAVR = /usr/local/avr
+DIRAVRBIN = $(DIRAVR)/bin
+DIRAVRUTILS = $(DIRAVR)/utils/bin
+DIRINC = $(DIRAVR)/include
+DIRLIB = $(DIRAVR)/avr/lib
+
+
+MCU_TARGET = atmega8
+LDSECTION  = --section-start=.text=0x1c00
+FUSE_L     = 0xdf
+FUSE_H     = 0xca
+ISPFUSES   = $(DIRAVRBIN)/uisp -dpart=ATmega8 $(ISPPARAMS) --wr_fuse_l=$(FUSE_L) --wr_fuse_h=$(FUSE_H)
+ISPFLASH   = $(DIRAVRBIN)/uisp -dpart=ATmega8 $(ISPPARAMS) --erase --upload if=$(PROGRAM).hex -v
+
+
+OBJ        = $(PROGRAM).o
+OPTIMIZE   = -Os
+
+DEFS       = -DF_CPU=16000000 -DBAUD_RATE=19200
+LIBS       =
+
+CC         = $(DIRAVRBIN)/avr-gcc
+
+
+# Override is only needed by avr-lib build system.
+
+override CFLAGS        = -g -Wall $(OPTIMIZE) -mmcu=$(MCU_TARGET) -D$(PRODUCT) $(DEFS) -I$(DIRINC)
+override LDFLAGS       = -Wl,-Map,$(PROGRAM).map,$(LDSECTION)
+
+OBJCOPY        = $(DIRAVRBIN)/avr-objcopy
+OBJDUMP        = $(DIRAVRBIN)/avr-objdump
+SIZE           = $(DIRAVRBIN)/avr-size
+
+all: $(PROGRAM).elf lst text asm size
+
+isp: $(PROGRAM).hex
+	$(ISPFUSES)
+	$(ISPFLASH)
+
+$(PROGRAM).elf: $(OBJ)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
+
+clean:
+	rm -rf *.s
+	rm -rf *.o *.elf
+	rm -rf *.lst *.map
+
+asm: $(PROGRAM).s
+
+%.s: %.c
+	$(CC) -S $(CFLAGS) -g1 $^
+
+lst:  $(PROGRAM).lst
+
+%.lst: %.elf
+	$(OBJDUMP) -h -S $< > $@
+
+size: $(PROGRAM).hex
+	$(SIZE) $^
+
+# Rules for building the .text rom images
+
+text: hex bin srec
+
+hex:  $(PROGRAM).hex
+bin:  $(PROGRAM).bin
+srec: $(PROGRAM).srec
+
+%.hex: %.elf
+	$(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.srec: %.elf
+	$(OBJCOPY) -j .text -j .data -O srec $< $@
+
+%.bin: %.elf
+	$(OBJCOPY) -j .text -j .data -O binary $< $@
diff --git a/bootloaders/bt/ATmegaBOOT_168.c b/bootloaders/bt/ATmegaBOOT_168.c
new file mode 100644
index 0000000..a85dc9a
--- /dev/null
+++ b/bootloaders/bt/ATmegaBOOT_168.c
@@ -0,0 +1,1032 @@
+/**********************************************************/
+/* Serial Bootloader for Atmel megaAVR Controllers        */
+/*                                                        */
+/* tested with ATmega8, ATmega128 and ATmega168           */
+/* should work with other mega's, see code for details    */
+/*                                                        */
+/* ATmegaBOOT.c                                           */
+/*                                                        */
+/* build: 050815                                          */
+/* date : 15.08.2005                                      */
+/*                                                        */
+/* 20060802: hacked for Arduino by D. Cuartielles         */
+/*           based on a previous hack by D. Mellis        */
+/*           and D. Cuartielles                           */
+/*                                                        */
+/* Monitor and debug functions were added to the original */
+/* code by Dr. Erik Lins, chip45.com. (See below)         */
+/*                                                        */
+/* Thanks to Karl Pitrich for fixing a bootloader pin     */
+/* problem and more informative LED blinking!             */
+/*                                                        */
+/* For the latest version see:                            */
+/* http://www.chip45.com/                                 */
+/*                                                        */
+/* ------------------------------------------------------ */
+/*                                                        */
+/* based on stk500boot.c                                  */
+/* Copyright (c) 2003, Jason P. Kyle                      */
+/* All rights reserved.                                   */
+/* see avr1.org for original file and information         */
+/*                                                        */
+/* 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 2 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, write  */
+/* to the Free Software Foundation, Inc.,                 */
+/* 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA */
+/*                                                        */
+/* Licence can be viewed at                               */
+/* http://www.fsf.org/licenses/gpl.txt                    */
+/*                                                        */
+/* Target = Atmel AVR m128,m64,m32,m16,m8,m162,m163,m169, */
+/* m8515,m8535. ATmega161 has a very small boot block so  */
+/* isn't supported.                                       */
+/*                                                        */
+/* Tested with m128,m8,m163 - feel free to let me know    */
+/* how/if it works for you.                               */
+/*                                                        */
+/**********************************************************/
+
+
+/* some includes */
+#include <inttypes.h>
+#include <avr/io.h>
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+#include <avr/wdt.h>               
+
+
+#define set_output(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
+#define set_input(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
+
+
+#define high(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
+#define low(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
+
+
+
+
+/* the current avr-libc eeprom functions do not support the ATmega168 */
+/* own eeprom write/read functions are used instead */
+#ifndef __AVR_ATmega168__
+#include <avr/eeprom.h>
+#endif
+
+/* define F_CPU according to AVR_FREQ set in Makefile */
+/* Is there a better way to pass such a parameter from Makefile to source code ? */
+
+#define F_CPU     16000000L
+
+#include <util/delay.h> 
+
+
+/* 20060803: hacked by DojoCorp */
+/* set the waiting time for the bootloader */
+#define MAX_TIME_COUNT (F_CPU>>1)
+
+/* set the UART baud rate */
+/* 20060803: hacked by DojoCorp */
+#define BAUD_RATE   115200
+
+
+/* SW_MAJOR and MINOR needs to be updated from time to time to avoid warning message from AVR Studio */
+/* never allow AVR Studio to do an update !!!! */
+#define HW_VER	 0x02
+#define SW_MAJOR 0x01
+#define SW_MINOR 0x0f
+
+
+/* Adjust to suit whatever pin your hardware uses to enter the bootloader */
+/* ATmega128 has two UARTS so two pins are used to enter bootloader and select UART */
+/* BL0... means UART0, BL1... means UART1 */
+#ifdef __AVR_ATmega128__
+#define BL_DDR  DDRF
+#define BL_PORT PORTF
+#define BL_PIN  PINF
+#define BL0     PINF7
+#define BL1     PINF6
+#else
+/* other ATmegas have only one UART, so only one pin is defined to enter bootloader */
+#define BL_DDR  DDRD
+#define BL_PORT PORTD
+#define BL_PIN  PIND
+#define BL      PIND6
+#endif
+
+
+/* onboard LED is used to indicate, that the bootloader was entered (3x flashing) */
+/* if monitor functions are included, LED goes on after monitor was entered */
+#ifdef __AVR_ATmega128__
+/* Onboard LED is connected to pin PB7 (e.g. Crumb128, PROBOmega128, Savvy128) */
+#define LED_DDR  DDRB
+#define LED_PORT PORTB
+#define LED_PIN  PINB
+#define LED      PINB7
+#else
+/* Onboard LED is connected to pin PB2 (e.g. Crumb8, Crumb168) */
+#define LED_DDR  DDRB
+#define LED_PORT PORTB
+#define LED_PIN  PINB
+/* 20060803: hacked by DojoCorp, LED pin is B5 in Arduino */
+/* #define LED      PINB2 */
+#define LED      PINB5
+#endif
+
+
+/* monitor functions will only be compiled when using ATmega128, due to bootblock size constraints */
+#ifdef __AVR_ATmega128__
+#define MONITOR
+#endif
+
+
+/* define various device id's */
+/* manufacturer byte is always the same */
+#define SIG1	0x1E	// Yep, Atmel is the only manufacturer of AVR micros.  Single source :(
+
+#if defined __AVR_ATmega128__
+#define SIG2	0x97
+#define SIG3	0x02
+#define PAGE_SIZE	0x80U	//128 words
+
+#elif defined __AVR_ATmega64__
+#define SIG2	0x96
+#define SIG3	0x02
+#define PAGE_SIZE	0x80U	//128 words
+
+#elif defined __AVR_ATmega32__
+#define SIG2	0x95
+#define SIG3	0x02
+#define PAGE_SIZE	0x40U	//64 words
+
+#elif defined __AVR_ATmega16__
+#define SIG2	0x94
+#define SIG3	0x03
+#define PAGE_SIZE	0x40U	//64 words
+
+#elif defined __AVR_ATmega8__
+#define SIG2	0x93
+#define SIG3	0x07
+#define PAGE_SIZE	0x20U	//32 words
+
+#elif defined __AVR_ATmega88__
+#define SIG2	0x93
+#define SIG3	0x0a
+#define PAGE_SIZE	0x20U	//32 words
+
+#elif defined __AVR_ATmega168__
+#define SIG2	0x94
+#define SIG3	0x06
+#define PAGE_SIZE	0x40U	//64 words
+
+#elif defined __AVR_ATmega162__
+#define SIG2	0x94
+#define SIG3	0x04
+#define PAGE_SIZE	0x40U	//64 words
+
+#elif defined __AVR_ATmega163__
+#define SIG2	0x94
+#define SIG3	0x02
+#define PAGE_SIZE	0x40U	//64 words
+
+#elif defined __AVR_ATmega169__
+#define SIG2	0x94
+#define SIG3	0x05
+#define PAGE_SIZE	0x40U	//64 words
+
+#elif defined __AVR_ATmega8515__
+#define SIG2	0x93
+#define SIG3	0x06
+#define PAGE_SIZE	0x20U	//32 words
+
+#elif defined __AVR_ATmega8535__
+#define SIG2	0x93
+#define SIG3	0x08
+#define PAGE_SIZE	0x20U	//32 words
+#endif
+
+
+/* function prototypes */
+void putch(char);
+char getch(void);
+void getNch(uint8_t);
+void byte_response(uint8_t);
+void nothing_response(void);
+char gethex(void);
+void puthex(char);
+void flash_led(uint8_t);
+
+/* some variables */
+union address_union {
+    uint16_t word;
+    uint8_t  byte[2];
+} address;
+
+union length_union {
+    uint16_t word;
+    uint8_t  byte[2];
+} length;
+
+struct flags_struct {
+    unsigned eeprom : 1;
+    unsigned rampz  : 1;
+} flags;
+
+uint8_t buff[256];
+uint8_t address_high;
+
+uint8_t pagesz=0x80;
+
+uint8_t i;
+uint8_t bootuart = 0;
+
+void (*app_start)(void) = 0x0000;
+
+
+/* main program starts here */
+int main(void)
+{
+    uint8_t ch,ch2;
+    uint16_t w;
+
+    asm volatile("nop\n\t");
+
+    /* set pin direction for bootloader pin and enable pullup */
+    /* for ATmega128, two pins need to be initialized */
+#ifdef __AVR_ATmega128__
+    BL_DDR &= ~_BV(BL0);
+    BL_DDR &= ~_BV(BL1);
+    BL_PORT |= _BV(BL0);
+    BL_PORT |= _BV(BL1);
+#else
+    BL_DDR &= ~_BV(BL);
+    BL_PORT |= _BV(BL);
+#endif
+
+
+#ifdef __AVR_ATmega128__
+    /* check which UART should be used for booting */
+    if(bit_is_clear(BL_PIN, BL0)) {
+      bootuart = 1;
+    }
+    else if(bit_is_clear(BL_PIN, BL1)) {
+      bootuart = 2;
+    }
+#endif
+
+    /* check if flash is programmed already, if not start bootloader anyway */
+    if(pgm_read_byte_near(0x0000) != 0xFF) {
+
+#ifdef __AVR_ATmega128__
+	/* no UART was selected, start application */
+	if(!bootuart) {
+          app_start();
+	}
+#else
+	/* check if bootloader pin is set low */
+	/* we don't start this part neither for the m8, nor m168 */
+	//if(bit_is_set(BL_PIN, BL)) {
+    //      app_start();
+    //    }
+#endif
+    }
+
+#ifdef __AVR_ATmega128__    
+    /* no bootuart was selected, default to uart 0 */
+    if(!bootuart) {
+      bootuart = 1;
+    }
+#endif
+
+
+    /* initialize UART(s) depending on CPU defined */
+#ifdef __AVR_ATmega128__
+    if(bootuart == 1) {
+	UBRR0L = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
+	UBRR0H = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
+	UCSR0A = 0x00;
+	UCSR0C = 0x06;
+	UCSR0B = _BV(TXEN0)|_BV(RXEN0);
+    }
+    if(bootuart == 2) {
+	UBRR1L = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
+	UBRR1H = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
+	UCSR1A = 0x00;
+	UCSR1C = 0x06;
+	UCSR1B = _BV(TXEN1)|_BV(RXEN1);
+    }
+#elif defined __AVR_ATmega163__
+    UBRR = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
+    UBRRHI = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
+    UCSRA = 0x00;
+    UCSRB = _BV(TXEN)|_BV(RXEN);	
+#elif defined __AVR_ATmega168__  
+	UBRR0H = ((F_CPU / 16 + BAUD_RATE / 2) / BAUD_RATE - 1) >> 8;
+	UBRR0L = ((F_CPU / 16 + BAUD_RATE / 2) / BAUD_RATE - 1);
+
+
+    //UBRR0L = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
+    //UBRR0H = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
+    UCSR0B = (1<<RXEN0) | (1<<TXEN0);
+    UCSR0C = (1<<UCSZ00) | (1<<UCSZ01);
+#elif defined __AVR_ATmega8__
+  /* m8 */
+  UBRRH = (((F_CPU/BAUD_RATE)/16)-1)>>8; 	// set baud rate
+  UBRRL = (((F_CPU/BAUD_RATE)/16)-1);
+  UCSRB = (1<<RXEN)|(1<<TXEN);  // enable Rx & Tx
+  UCSRC = (1<<URSEL)|(1<<UCSZ1)|(1<<UCSZ0);  // config USART; 8N1
+#else
+    /* m16,m32,m169,m8515,m8535 */
+    UBRRL = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
+    UBRRH = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
+    UCSRA = 0x00;
+    UCSRC = 0x06;
+    UCSRB = _BV(TXEN)|_BV(RXEN);
+#endif
+
+    /* set LED pin as output */
+    LED_DDR |= _BV(LED);
+              
+
+     
+      set_output(DDRD,PIND7);
+	  high(PORTD,PD7);    
+	  for (i = 0; i < 16; i++) {
+		 
+			_delay_loop_2(0);
+	  }
+	
+	
+	  low(PORTD,PD7);
+
+
+    /* flash onboard LED to signal entering of bootloader */
+#ifdef __AVR_ATmega128__
+    // 4x for UART0, 5x for UART1
+    flash_led(3 + bootuart);
+#else
+    flash_led(3);
+#endif
+    
+    /* 20050803: by DojoCorp, this is one of the parts provoking the
+                 system to stop listening, cancelled from the original */
+    //putch('\0');
+        
+
+   //message("SET BT PAGEMODE 3 2000 1");    
+putch('S');
+putch('E');
+putch('T');
+putch(' ');
+putch('B');
+putch('T');
+putch(' ');
+putch('P');
+putch('A');
+putch('G');
+putch('E');
+putch('M');
+putch('O');
+putch('D');
+putch('E');
+putch(' ');
+putch('3');
+putch(' ');
+putch('2');
+putch('0');
+putch('0');
+putch('0');
+putch(' ');
+putch('1');
+putch(0x0D);
+
+  
+	  //put_s("SET BT ROLE 0 f 7d00");  
+	putch('S');
+	putch('E');
+	putch('T');
+	putch(' ');
+	putch('B');
+	putch('T');
+	putch(' ');
+	putch('R');
+	putch('O');
+	putch('L');
+	putch('E');
+	putch(' ');
+	putch('0');
+	putch(' ');
+	putch('f');
+	putch(' ');
+	putch('7');
+	putch('d');
+	putch('0');
+	putch('0');
+	putch(0x0D);
+
+
+
+
+
+
+    /* forever loop */
+    for (;;) {
+
+	/* get character from UART */
+	ch = getch();
+
+	/* A bunch of if...else if... gives smaller code than switch...case ! */
+
+	/* Hello is anyone home ? */ 
+	if(ch=='0') {
+	    nothing_response();
+	}
+
+
+	/* Request programmer ID */
+	/* Not using PROGMEM string due to boot block in m128 being beyond 64kB boundry  */
+	/* Would need to selectively manipulate RAMPZ, and it's only 9 characters anyway so who cares.  */
+	else if(ch=='1') {
+	    if (getch() == ' ') {
+		putch(0x14);
+		putch('A');
+		putch('V');
+		putch('R');
+		putch(' ');
+		putch('I');
+		putch('S');
+		putch('P');
+		putch(0x10);
+	    }
+	}
+
+
+	/* AVR ISP/STK500 board commands  DON'T CARE so default nothing_response */
+	else if(ch=='@') {
+	    ch2 = getch();
+	    if (ch2>0x85) getch();
+	    nothing_response();
+	}
+
+
+	/* AVR ISP/STK500 board requests */
+	else if(ch=='A') {
+	    ch2 = getch();
+	    if(ch2==0x80) byte_response(HW_VER);		// Hardware version
+	    else if(ch2==0x81) byte_response(SW_MAJOR);	// Software major version
+	    else if(ch2==0x82) byte_response(SW_MINOR);	// Software minor version
+	    else if(ch2==0x98) byte_response(0x03);		// Unknown but seems to be required by avr studio 3.56
+	    else byte_response(0x00);				// Covers various unnecessary responses we don't care about
+	}
+
+
+	/* Device Parameters  DON'T CARE, DEVICE IS FIXED  */
+	else if(ch=='B') {
+	    getNch(20);
+	    nothing_response();
+	}
+
+
+	/* Parallel programming stuff  DON'T CARE  */
+	else if(ch=='E') {
+	    getNch(5);
+	    nothing_response();
+	}
+
+
+	/* Enter programming mode  */
+	else if(ch=='P') {
+	    nothing_response();
+	}
+
+
+	/* Leave programming mode  */
+	else if(ch=='Q') {
+	    nothing_response();
+	}
+
+
+	/* Erase device, don't care as we will erase one page at a time anyway.  */
+	else if(ch=='R') {
+	    nothing_response();
+	}
+
+
+	/* Set address, little endian. EEPROM in bytes, FLASH in words  */
+	/* Perhaps extra address bytes may be added in future to support > 128kB FLASH.  */
+	/* This might explain why little endian was used here, big endian used everywhere else.  */
+	else if(ch=='U') {
+	    address.byte[0] = getch();
+	    address.byte[1] = getch();
+	    nothing_response();
+	}
+
+
+	/* Universal SPI programming command, disabled.  Would be used for fuses and lock bits.  */
+	else if(ch=='V') {
+	    getNch(4);
+	    byte_response(0x00);
+	}
+
+
+	/* Write memory, length is big endian and is in bytes  */
+	else if(ch=='d') {
+	    length.byte[1] = getch();
+	    length.byte[0] = getch();
+	    flags.eeprom = 0;
+	    if (getch() == 'E') flags.eeprom = 1;
+	    for (w=0;w<length.word;w++) {
+		buff[w] = getch();	                        // Store data in buffer, can't keep up with serial data stream whilst programming pages
+	    }
+	    if (getch() == ' ') {
+		if (flags.eeprom) {		                //Write to EEPROM one byte at a time
+		    for(w=0;w<length.word;w++) {
+#ifdef __AVR_ATmega168__
+			while(EECR & (1<<EEPE));
+			EEAR = (uint16_t)(void *)address.word;
+			EEDR = buff[w];
+			EECR |= (1<<EEMPE);
+			EECR |= (1<<EEPE);
+#else
+			eeprom_write_byte((void *)address.word,buff[w]);
+#endif
+			address.word++;
+		    }			
+		}
+		else {					        //Write to FLASH one page at a time
+		    if (address.byte[1]>127) address_high = 0x01;	//Only possible with m128, m256 will need 3rd address byte. FIXME
+		    else address_high = 0x00;
+#ifdef __AVR_ATmega128__
+		    RAMPZ = address_high;
+#endif
+		    address.word = address.word << 1;	        //address * 2 -> byte location
+		    /* if ((length.byte[0] & 0x01) == 0x01) length.word++;	//Even up an odd number of bytes */
+		    if ((length.byte[0] & 0x01)) length.word++;	//Even up an odd number of bytes
+		    cli();					//Disable interrupts, just to be sure
+			// HACKME: EEPE used to be EEWE
+		    while(bit_is_set(EECR,EEPE));			//Wait for previous EEPROM writes to complete
+		    asm volatile(
+				 "clr	r17		\n\t"	//page_word_count
+				 "lds	r30,address	\n\t"	//Address of FLASH location (in bytes)
+				 "lds	r31,address+1	\n\t"
+				 "ldi	r28,lo8(buff)	\n\t"	//Start of buffer array in RAM
+				 "ldi	r29,hi8(buff)	\n\t"
+				 "lds	r24,length	\n\t"	//Length of data to be written (in bytes)
+				 "lds	r25,length+1	\n\t"
+				 "length_loop:		\n\t"	//Main loop, repeat for number of words in block							 							 
+				 "cpi	r17,0x00	\n\t"	//If page_word_count=0 then erase page
+				 "brne	no_page_erase	\n\t"						 
+				 "wait_spm1:		\n\t"
+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+				 "andi	r16,1           \n\t"
+				 "cpi	r16,1           \n\t"
+				 "breq	wait_spm1       \n\t"
+				 "ldi	r16,0x03	\n\t"	//Erase page pointed to by Z
+				 "sts	%0,r16		\n\t"
+				 "spm			\n\t"							 
+#ifdef __AVR_ATmega163__
+				 ".word 0xFFFF		\n\t"
+				 "nop			\n\t"
+#endif
+				 "wait_spm2:		\n\t"
+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+				 "andi	r16,1           \n\t"
+				 "cpi	r16,1           \n\t"
+				 "breq	wait_spm2       \n\t"									 
+
+				 "ldi	r16,0x11	\n\t"	//Re-enable RWW section
+				 "sts	%0,r16		\n\t"						 			 
+				 "spm			\n\t"
+#ifdef __AVR_ATmega163__
+				 ".word 0xFFFF		\n\t"
+				 "nop			\n\t"
+#endif
+				 "no_page_erase:		\n\t"							 
+				 "ld	r0,Y+		\n\t"	//Write 2 bytes into page buffer
+				 "ld	r1,Y+		\n\t"							 
+							 
+				 "wait_spm3:		\n\t"
+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+				 "andi	r16,1           \n\t"
+				 "cpi	r16,1           \n\t"
+				 "breq	wait_spm3       \n\t"
+				 "ldi	r16,0x01	\n\t"	//Load r0,r1 into FLASH page buffer
+				 "sts	%0,r16		\n\t"
+				 "spm			\n\t"
+							 
+				 "inc	r17		\n\t"	//page_word_count++
+				 "cpi r17,%1	        \n\t"
+				 "brlo	same_page	\n\t"	//Still same page in FLASH
+				 "write_page:		\n\t"
+				 "clr	r17		\n\t"	//New page, write current one first
+				 "wait_spm4:		\n\t"
+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+				 "andi	r16,1           \n\t"
+				 "cpi	r16,1           \n\t"
+				 "breq	wait_spm4       \n\t"
+#ifdef __AVR_ATmega163__
+				 "andi	r30,0x80	\n\t"	// m163 requires Z6:Z1 to be zero during page write
+#endif							 							 
+				 "ldi	r16,0x05	\n\t"	//Write page pointed to by Z
+				 "sts	%0,r16		\n\t"
+				 "spm			\n\t"
+#ifdef __AVR_ATmega163__
+				 ".word 0xFFFF		\n\t"
+				 "nop			\n\t"
+				 "ori	r30,0x7E	\n\t"	// recover Z6:Z1 state after page write (had to be zero during write)
+#endif
+				 "wait_spm5:		\n\t"
+				 "lds	r16,%0		\n\t"	//Wait for previous spm to complete
+				 "andi	r16,1           \n\t"
+				 "cpi	r16,1           \n\t"
+				 "breq	wait_spm5       \n\t"									 
+				 "ldi	r16,0x11	\n\t"	//Re-enable RWW section
+				 "sts	%0,r16		\n\t"						 			 
+				 "spm			\n\t"					 		 
+#ifdef __AVR_ATmega163__
+				 ".word 0xFFFF		\n\t"
+				 "nop			\n\t"
+#endif
+				 "same_page:		\n\t"							 
+				 "adiw	r30,2		\n\t"	//Next word in FLASH
+				 "sbiw	r24,2		\n\t"	//length-2
+				 "breq	final_write	\n\t"	//Finished
+				 "rjmp	length_loop	\n\t"
+				 "final_write:		\n\t"
+				 "cpi	r17,0		\n\t"
+				 "breq	block_done	\n\t"
+				 "adiw	r24,2		\n\t"	//length+2, fool above check on length after short page write
+				 "rjmp	write_page	\n\t"
+				 "block_done:		\n\t"
+				 "clr	__zero_reg__	\n\t"	//restore zero register
+#if defined __AVR_ATmega168__
+				 : "=m" (SPMCSR) : "M" (PAGE_SIZE) : "r0","r16","r17","r24","r25","r28","r29","r30","r31"
+#else
+				 : "=m" (SPMCR) : "M" (PAGE_SIZE) : "r0","r16","r17","r24","r25","r28","r29","r30","r31"
+#endif
+				 );
+		    /* Should really add a wait for RWW section to be enabled, don't actually need it since we never */
+		    /* exit the bootloader without a power cycle anyhow */
+		}
+		putch(0x14);
+		putch(0x10);
+	    }		
+	}
+    
+
+        /* Read memory block mode, length is big endian.  */
+        else if(ch=='t') {
+	    length.byte[1] = getch();
+	    length.byte[0] = getch();
+#if defined __AVR_ATmega128__
+	    if (address.word>0x7FFF) flags.rampz = 1;		// No go with m256, FIXME
+	    else flags.rampz = 0;
+#endif
+	    if (getch() == 'E') flags.eeprom = 1;
+	    else {
+		flags.eeprom = 0;
+		address.word = address.word << 1;	        // address * 2 -> byte location
+	    }
+	    if (getch() == ' ') {		                // Command terminator
+		putch(0x14);
+		for (w=0;w < length.word;w++) {		        // Can handle odd and even lengths okay
+		    if (flags.eeprom) {	                        // Byte access EEPROM read
+#ifdef __AVR_ATmega168__
+			while(EECR & (1<<EEPE));
+			EEAR = (uint16_t)(void *)address.word;
+			EECR |= (1<<EERE);
+			putch(EEDR);
+#else
+			putch(eeprom_read_byte((void *)address.word));
+#endif
+			address.word++;
+		    }
+		    else {
+
+			if (!flags.rampz) putch(pgm_read_byte_near(address.word));
+#if defined __AVR_ATmega128__
+			else putch(pgm_read_byte_far(address.word + 0x10000));
+			// Hmmmm, yuck  FIXME when m256 arrvies
+#endif
+			address.word++;
+		    }
+		}
+		putch(0x10);
+	    }
+	}
+
+
+        /* Get device signature bytes  */
+        else if(ch=='u') {
+	    if (getch() == ' ') {
+		putch(0x14);
+		putch(SIG1);
+		putch(SIG2);
+		putch(SIG3);
+		putch(0x10);
+	    }
+	}
+
+
+        /* Read oscillator calibration byte */
+        else if(ch=='v') {
+	    byte_response(0x00);
+	}
+
+
+#ifdef MONITOR
+
+	/* here come the extended monitor commands by Erik Lins */
+
+	/* check for three times exclamation mark pressed */
+	else if(ch=='!') {
+	    ch = getch();
+	    if(ch=='!') {
+		ch = getch();
+		if(ch=='!') {
+
+#ifdef __AVR_ATmega128__
+		    uint16_t extaddr;
+#endif
+		    uint8_t addrl, addrh;
+
+#ifdef CRUMB128
+		    PGM_P welcome = {"ATmegaBOOT / Crumb128 - (C) J.P.Kyle, E.Lins - 050815\n\r"};
+#elif defined PROBOMEGA128
+		    PGM_P welcome = {"ATmegaBOOT / PROBOmega128 - (C) J.P.Kyle, E.Lins - 050815\n\r"};
+#elif defined SAVVY128
+		    PGM_P welcome = {"ATmegaBOOT / Savvy128 - (C) J.P.Kyle, E.Lins - 050815\n\r"};
+#endif
+
+		    /* turn on LED */
+		    LED_DDR |= _BV(LED);
+		    LED_PORT &= ~_BV(LED);
+
+		    /* print a welcome message and command overview */
+		    for(i=0; welcome[i] != '\0'; ++i) {
+			putch(welcome[i]);
+		    }
+
+		    /* test for valid commands */
+		    for(;;) {
+			putch('\n');
+			putch('\r');
+			putch(':');
+			putch(' ');
+
+			ch = getch();
+			putch(ch);
+
+			/* toggle LED */
+			if(ch == 't') {
+			    if(bit_is_set(LED_PIN,LED)) {
+				LED_PORT &= ~_BV(LED);
+				putch('1');
+			    } else {
+				LED_PORT |= _BV(LED);
+				putch('0');
+			    }
+
+			} 
+
+			/* read byte from address */
+			else if(ch == 'r') {
+			    ch = getch(); putch(ch);
+			    addrh = gethex();
+			    addrl = gethex();
+			    putch('=');
+			    ch = *(uint8_t *)((addrh << 8) + addrl);
+			    puthex(ch);
+			}
+
+			/* write a byte to address  */
+			else if(ch == 'w') {
+			    ch = getch(); putch(ch);
+			    addrh = gethex();
+			    addrl = gethex();
+			    ch = getch(); putch(ch);
+			    ch = gethex();
+			    *(uint8_t *)((addrh << 8) + addrl) = ch;
+
+			}
+
+			/* read from uart and echo back */
+			else if(ch == 'u') {
+			    for(;;) {
+				putch(getch());
+			    }
+			}
+#ifdef __AVR_ATmega128__
+			/* external bus loop  */
+			else if(ch == 'b') {
+			    putch('b');
+			    putch('u');
+			    putch('s');
+			    MCUCR = 0x80;
+			    XMCRA = 0;
+			    XMCRB = 0;
+			    extaddr = 0x1100;
+			    for(;;) {
+				ch = *(volatile uint8_t *)extaddr;
+				if(++extaddr == 0) {
+				    extaddr = 0x1100;
+				}
+			    }
+			}
+#endif
+
+			else if(ch == 'j') {
+			    app_start();
+			}
+
+		    }
+		    /* end of monitor functions */
+
+		}
+	    }
+	}
+	/* end of monitor */
+#endif
+
+
+    }
+    /* end of forever loop */
+
+}
+
+
+char gethex(void) {
+    char ah,al;
+
+    ah = getch(); putch(ah);
+    al = getch(); putch(al);
+    if(ah >= 'a') {
+	ah = ah - 'a' + 0x0a;
+    } else if(ah >= '0') {
+	ah -= '0';
+    }
+    if(al >= 'a') {
+	al = al - 'a' + 0x0a;
+    } else if(al >= '0') {
+	al -= '0';
+    }
+    return (ah << 4) + al;
+}
+
+
+void puthex(char ch) {
+    char ah,al;
+
+    ah = (ch & 0xf0) >> 4;
+    if(ah >= 0x0a) {
+	ah = ah - 0x0a + 'a';
+    } else {
+	ah += '0';
+    }
+    al = (ch & 0x0f);
+    if(al >= 0x0a) {
+	al = al - 0x0a + 'a';
+    } else {
+	al += '0';
+    }
+    putch(ah);
+    putch(al);
+}
+
+
+void putch(char ch)
+{
+#ifdef __AVR_ATmega128__
+    if(bootuart == 1) {
+	while (!(UCSR0A & _BV(UDRE0)));
+	UDR0 = ch;
+    }
+    else if (bootuart == 2) {
+	while (!(UCSR1A & _BV(UDRE1)));
+	UDR1 = ch;
+    }
+#elif defined __AVR_ATmega168__
+    while (!(UCSR0A & _BV(UDRE0)));
+    UDR0 = ch;
+#else
+    /* m8,16,32,169,8515,8535,163 */
+    while (!(UCSRA & _BV(UDRE)));
+    UDR = ch;
+#endif
+}
+
+
+char getch(void)
+{
+#ifdef __AVR_ATmega128__
+    if(bootuart == 1) {
+	while(!(UCSR0A & _BV(RXC0)));
+	return UDR0;
+    }
+    else if(bootuart == 2) {
+	while(!(UCSR1A & _BV(RXC1)));
+	return UDR1;
+    }
+    return 0;
+#elif defined __AVR_ATmega168__
+    uint32_t count = 0;
+    while(!(UCSR0A & _BV(RXC0))){
+    	/* 20060803 DojoCorp:: Addon coming from the previous Bootloader*/               
+    	/* HACKME:: here is a good place to count times*/
+    	count++;
+    	if (count > MAX_TIME_COUNT)
+    		app_start();
+     }
+    return UDR0;
+#else
+    /* m8,16,32,169,8515,8535,163 */
+    uint32_t count = 0;
+    while(!(UCSRA & _BV(RXC))){
+    	/* 20060803 DojoCorp:: Addon coming from the previous Bootloader*/               
+    	/* HACKME:: here is a good place to count times*/
+    	count++;
+    	if (count > MAX_TIME_COUNT)
+    		app_start();
+     }
+    return UDR;
+#endif
+}
+
+
+void getNch(uint8_t count)
+{
+    uint8_t i;
+    for(i=0;i<count;i++) {
+#ifdef __AVR_ATmega128__
+	if(bootuart == 1) {
+	    while(!(UCSR0A & _BV(RXC0)));
+	    UDR0;
+	} 
+	else if(bootuart == 2) {
+	    while(!(UCSR1A & _BV(RXC1)));
+	    UDR1;
+	}
+#elif defined __AVR_ATmega168__
+	while(!(UCSR0A & _BV(RXC0)));
+	UDR0;
+#else
+	/* m8,16,32,169,8515,8535,163 */
+   	/* 20060803 DojoCorp:: Addon coming from the previous Bootloader*/               
+	//while(!(UCSRA & _BV(RXC)));
+	//UDR;
+    uint8_t i;
+    for(i=0;i<count;i++) {
+    	getch(); // need to handle time out
+    }
+#endif		
+    }
+}
+
+
+void byte_response(uint8_t val)
+{
+    if (getch() == ' ') {
+	putch(0x14);
+	putch(val);
+	putch(0x10);
+    }
+}
+
+
+void nothing_response(void)
+{
+    if (getch() == ' ') {
+	putch(0x14);
+	putch(0x10);
+    }
+}
+
+void flash_led(uint8_t count)
+{
+    /* flash onboard LED three times to signal entering of bootloader */
+    uint32_t l;
+
+    if (count == 0) {
+      count = 3;
+    }
+    
+    for (i = 0; i < count; ++i) {
+	LED_PORT |= _BV(LED);
+	for(l = 0; l < (2 * F_CPU); ++l);
+	LED_PORT &= ~_BV(LED);
+	for(l = 0; l < (F_CPU / 5); ++l);
+    }
+}
+
+
+/* end of file ATmegaBOOT.c */
diff --git a/bootloaders/bt/ATmegaBOOT_168.hex b/bootloaders/bt/ATmegaBOOT_168.hex
new file mode 100644
index 0000000..036ae54
--- /dev/null
+++ b/bootloaders/bt/ATmegaBOOT_168.hex
@@ -0,0 +1,121 @@
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