diff --git a/comcom.sh b/comcom.sh
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+#!/bin/sh
+#
+name="\"comcom\" - AVR Shellscript for JTAG"
+# Author: Buchberger Florian
+version="2.2.3.5"
+# Date: 01. 06. 2012
+# Description: 
+#   Shellscript to convert C++ and assambler files to hexadecimal files for µ-processors over a JTAG ICE emulator.
+#
+# Changelog:
+#	2.2.3.5:	better source code, device type parmeter is avrdude device partno, if not supported by this script
+#	2.2.3.4:	device type parameter (atmega8, 16, 32, 64, 128, attiny10, 13, 15) 
+#	2.2.3.3:	better source code
+#	2.2.3.2:	better cl help
+#	2.2.3.1:	cl help updated
+#	2.2.3:		multible c files
+#	2.2.2:		liunx installer
+#	2.2.1:		os cl option
+#	2.2: 	  	mac version
+# 2.1: 	  	cl options
+#	2.0:	  	hex input
+#	1.9:	  	asm input
+#	1.4:	  	better error messages
+#	1.0:	  	first version		
+#
+#
+# exit codes:
+# 0  : no error
+# 1  : argument error
+# 2  : compiling error
+# 3  : conversion error
+# 4  : removing error
+# 5  : comunitating error
+# 6x : programs not found
+#    : 1  : avr-gcc
+#    : 2  : avr-asm
+#    : 3  : objcopy
+#    : 4  : rm
+#    : 5  : cp
+#    : 6  : avrdude
+# 7  : os error
+
+################################
+# variables
+################################
+
+# constant definitions
+
+defInputC=""
+defInputAsm=$defInputC
+defInputHex=""
+defTmpObj=$defInputC.$$.obj
+defOutputHex=$defInputC.hex
+defDev="/dev/ttyUSB0"
+defAtType="atmega16"
+
+# basic variables (parameter)
+inputC=$defInputC
+inputAsm=$defInputAsm
+inputHex=$defInputHex
+tmpObj=$defTmpObj
+outputHex=$defOutputHex
+dev=$defDev
+atType=$defAtType
+
+# type selection variables
+usingC=0
+usingAsm=0;
+usingHex=0
+
+# C++ compiler & arguments
+compiler="/usr/bin/avr-g++"
+compilerArgsT="-g -Os -Wall -mcall-prologues -mmcu="
+compilerO="-o"
+
+# if compiler isn't found, then get path
+if test ! -f $compiler ;then
+	compiler=`which avr-g++`
+fi 
+
+# assambler & arguments
+asm="/usr/bin/avr-as"
+asmO="-o"
+asmT="-mmcu"
+
+# if compiler isn't found, then get path
+if test ! -f $asm ;then
+	asm=`which avr-as`
+fi 
+
+# obj2hex program & arguments
+objcopys="/usr/bin/avr-objcopy"
+objcopyArgs="-R .eeprom -O ihex"
+
+# if program isn't found, then get path
+if test ! -f $objcopys ;then
+	objcopys=`which avr-objcopy`
+fi 
+
+# remove
+remove="/bin/cp"
+
+# if program isn't found, then get path
+if test ! -f $copy ;then
+	copy=`which cp`
+fi 
+
+# copy
+remove="/bin/rm"
+
+# if program isn't found, then get path
+if test ! -f $remove ;then
+	remove=`which rm`
+fi 
+
+# programmer (here jtag1 -> JTAG ICE)
+prog="jtag1"
+
+# avrdude & arguments
+dude="/usr/bin/avrdude"
+dudeT="-p"
+dudeD="-P"
+dudeP="-c"
+dudeHex="-U flash:w:"
+
+# if program isn't found, then get path
+if test ! -f $dude ;then
+	dude=`which avrdude`
+fi 
+
+# temporary variables & time variables
+
+eTmp=0
+
+# start time in s & ns
+sTimeN=`date +%N`
+sTimeS=`date +%s`
+
+# end time in s & ns (not defined yet)
+eTimeN=0;
+eTimeS=0;
+
+# deference time (eTime - sTime)
+dTimeN=0;
+dTimeS=0;
+
+# user specified os
+uos=0;
+
+# only output file
+outputOnly=0
+
+################################
+# texts
+################################
+
+error="Error occurred!"
+ec="Exiting with error code"
+helptext="
+$name
+Version $version 
+by Buchberger Florian
+
+Usage: $0 [options]
+
+Options:
+--output [file] or -o [file]
+	: filename for compiled file
+--c-input [files] or -ic [files]
+	: filenames for a c or c++ coded source file
+--asm-input [file] or -ia [file]
+	: filename for a assambler coded source file
+--hex-input [file] or -ih [file]
+	: filename for a compliled hex source file
+--temp-file [file] or -tf [file]
+	: filename for a temporary output file
+--os [type]
+	: specify operating system 
+	: possibilitys for [type]:
+	: : macosx
+	: : linux
+--device [file] or -d [file]
+	: filename of device (default: /dev/ttyUSB0)
+--type [type] or -t [type]
+	: device type (default: atmega16)
+--help or -h
+	: displays this help text"
+
+
+################################
+# installation function
+################################
+
+install() {
+	case $1 in
+		"linux")
+			echo "This skript needs root rights for installing necessary programs."
+			# download programs via apt-get
+			sudo apt-get install gcc-avr binutils-avr avrdude 
+			;;
+		"macosx")
+			echo "Mac installer not finished yet."
+			# todo
+			;;
+		*)
+			return 1
+	esac
+	return 0
+}
+
+################################
+# interpret arguments
+################################
+
+# which other parameter is needed (out, asm, hex, tmp, dev, type, os, c or empty ())
+needString=""
+
+# parameter error
+parameterE=""
+
+# should the cl help text be displeyed?
+useHelp=0
+
+# should the installer be started?
+install=0
+
+# is next parameter a option or a file/type? (0 -> option, 1 -> file/type)
+next=0
+
+# for ervery parameter do
+for i in $* ;do
+
+	case $needString in
+	
+		# outfile
+		"out") 
+			outputHex=$i 
+			needString="" 
+			;;
+		
+		# infile is an asambler file
+		"asm")
+			inputAsm=$i
+			usingAsm=1
+			needString="" 
+			;;
+			
+		# infile is a hex file
+		"hex")
+			inputHex=$i
+			usingHex=1
+			needString=""
+			;;
+			
+		# tmp file
+		"tmp") 
+			tmpObj=$i 
+			needString="" 
+			;;
+			
+		# specified device (default: /dev/ttyUSB0)
+		"dev") 
+			dev=$i 
+			needString="" 
+			;;
+			
+		# controller type (default: atmega16)
+		"type") 
+			atType=$i 
+			needString="" 
+			;;
+			
+		# operating system
+		"os")
+			uos=$i
+			needString="" 
+			;;
+			
+		# infile(s) is/are c files
+		"c")
+			# if file exists then ad file to list of c files
+			if test -f $i ;then
+				inputC="$inputC $i"
+				usingC=`echo "scale=0; ($usingC + 1)" | bc`
+			
+			# else no other strings will be used for this option
+			# this parameter $i is also used for interpreting options
+			else
+				needString=""
+				next=1
+			fi
+			;;
+			
+		# if no string is needed ($needString = "") this parameter is used for interpreting options
+		*)
+			next=1
+			;;
+	esac
+	
+	# if parameter is used for interprting options
+	if test $next = 1 ;then
+		case $i in
+			"-o" | "--output")
+				needString="out" ;;
+			"-ic" | "--c-input")
+				needString="c" ;;
+			"-ia" | "--asm-input")
+				needString="asm" ;;
+			"-tf" | "--temp-file")
+				needString="tmp" ;;
+			"-d" | "--device")
+				needString="dev" ;;
+			"-t" | "--type")
+				needString="type" ;;
+			"-h" | "--help")
+				useHelp=1 ;;
+			"--os")
+				needString="os" ;;
+			"-ih" | "--hex-input")
+				needString="hex" ;;
+			"-oo" | "--output-only")
+				outputOnly=1 ;;
+			"--install")
+				install=1 ;;
+			*)
+				parameterE="Invalid Argument $i. \nUse '--help' to get a list of parameters." ;;
+		esac
+		next=0
+	fi
+done
+
+# if number of args = 0 display error
+if test $# = 0 ;then
+	echo $error
+	echo "$ec 1..."
+	echo "No arguments specified!"
+	echo "Use '--help' to get a list of parameters."
+	exit 1
+fi
+
+# if help text is used ... ehm yeah...
+if test $useHelp = 1 ;then
+	echo "$helptext"
+	exit 0
+fi
+
+# if install should be startet
+if test $install = 1 ;then
+	
+	# if no operating system is specified then abort
+	if test $uos = 0 ;then
+		echo $error
+		echo "$ec 7..."
+		echo "No Operating System specified!"
+		exit 7
+	fi
+	
+	# start install function
+	install $uos
+	
+	# if function return error 1 then abort
+	if test $? = 1 ;then
+		echo $error
+		echo "$ec 7..."
+		echo "Operating System not supported!"
+		exit 7	
+	fi
+	exit 0
+fi
+
+tmp=0;
+
+tmp=`echo "scale=0; ($usingAsm + $usingC + $usingHex)" | bc`
+
+# number of different types of input files should be exact 1
+if test $tmp != 1 ;then
+	parameterE="Invalid number of input files!"
+fi
+
+# if another parameter is needed 
+# and needed parameter is not c file
+# and there is at least 1 c file
+if test \( "$needString" != "" \) -a \( "$needString" != "c" \) -a \( $usingC = 0 \) ;then
+	parameterE="Expression missing!"
+fi
+
+# if error is set display error message
+if test "$parameterE" != "" ;then
+	echo $error
+	echo "$ec 1..."
+	echo $parameterE
+	exit 1
+fi
+
+# if no tmp file is specified a new file name will be set
+if test "$tmpObj" = "$defTmpObj" ;then
+	tmpObj=$$.obj
+fi
+
+# if no output file name is specified the file name will be set
+if test "$outputHex" = "$defOutputHex" ;then
+	input=""
+	if test $usingC = 1 ;then
+		input=$inputC
+	fi
+	if test $usingHex = 1 ;then
+		input=$inputHex
+	fi
+	if test $usingAsm = 1 ;then
+		input=$inputAsm
+	fi
+	fname=`echo $input | awk '{print $1}'`
+	outputHex=$fname.hex
+fi
+
+################################
+# check operating system
+################################
+
+# is the operation system Linux?
+oos=`uname -a | awk "/Linux/{print $1}"`
+
+os=0
+
+# if operating system is linux
+if test $oos != "" ;then
+	os=1
+fi
+
+# if --os parameter is specified
+if test $uos != 0 ;then
+	case $uos in 
+		"macosx")
+			def="/dev/cu.usbserial-000012FD"
+			os=1 
+			;;
+		"linux")
+			os=1
+			;;
+		*)
+			os=0 ;;
+	esac
+fi
+
+# if still os unknown
+if test $os = 0 ;then
+	echo $error
+	echo "$ec 7..."
+	echo "Unknown Operating System!"
+	echo "Please use --help to get advice."
+	exit 7
+fi
+
+################################
+# testing program installation
+################################
+# testing all programs if they exist
+
+if test ! -f $compiler ;then
+	echo $error
+	echo "$ec 61..."
+	echo "Program not found."
+	echo "Please install avr-gcc or start with parameter \"--install\"."
+	exit 61
+fi
+if test ! -f $asm ;then
+	echo $error
+	echo "$ec 62..."
+	echo "Program not found."
+	echo "Please install avr-as or start with parameter \"--install\"."
+	exit 62
+fi
+if test ! -f $objcopys ;then
+	echo $error
+	echo "$ec 63..."
+	echo "Program not found."
+	echo "Please install avr-objcopy or start with parameter \"--install\"."
+	exit 63
+fi
+if test ! -f $remove ;then
+	echo $error
+	echo "$ec 64..."
+	echo "Program not found."
+	echo "Please install rm or start with parameter \"--install\"."
+	exit 64
+fi
+if test ! -f $copy ;then
+	echo $error
+	echo "$ec 65..."
+	echo "Program not found."
+	echo "Please install cp or start with parameter \"--install\"."
+	exit 65
+fi
+if test ! -f $dude ;then
+	echo $error
+	echo "$ec 66..."
+	echo "Program not found."
+	echo "Please install avrdude or start with parameter \"--install\"."
+	exit 66
+fi
+
+################################
+# program
+################################
+
+# if not hex input
+if test $usingHex = 0 ;then
+
+	# if c, compile c files to $tmpObj
+	if test $usingC = 1 ;then
+		$compiler $compilerArgsT$compilerArgsTp$atType $inputC $compilerO $tmpObj 
+	fi
+
+	# if asm, compile asm files to $tmpObj
+	if test $usingAsm = 1 ;then
+		$asm $asmO $tmpObj $asmT$atType $inputAsm
+	fi
+
+	eTmp=$?
+
+	# if compiler returns error, display error and abort
+	if test ! \( $eTmp = 0 \) ;then
+		echo $error
+		if test $usingC = 1 ;then
+			echo "$compiler returned $eTmp"
+		else 
+			echo "$asm returned $eTmp"
+		fi
+		echo "Aborting..."
+		echo "$ec 2..."
+		exit 2
+	fi
+
+	# if tmpObj not exists
+	if test ! \( -f $tmpObj \) ;then 
+		echo $error 
+		echo "Unable to create temporary object file!"
+		echo "$ec 2..."
+		exit 2
+	fi
+
+	# copy tmpObj to $ouputhex
+	$objcopys $objcopyArgs $tmpObj $outputHex
+
+	eTmp=$?
+
+	# if objcopy returns error, display error and abort
+	if test ! \( $eTmp = 0 \) ;then
+		echo $error
+		echo "$objcopys returned $eTmp"
+		echo "Aborting..."
+		echo "$ec 3..."
+		exit 3
+	fi
+
+	# if $outputHex not exists
+	if test ! -f $outputHex ;then 
+		echo $error 
+		echo "Unable to create .hex - file!"
+		echo "$ec 3..."
+		exit 3
+	fi
+
+	# remove tmp file
+	$remove $tmpObj
+
+	eTmp=$?
+
+	# if rm returns an error, display error and abort
+	if test ! \( $eTmp = 0 \) ;then
+		echo $error
+		echo "$remove returned $eTmp"
+		echo "Aborting..."
+		echo "$ec 4..."
+	fi
+
+	# if tmpObj still exists, display error
+	if test -f $tmpObj ;then
+		echo $error
+		echo "Unable to delete temporary object file!"
+		echo "$ec 4..."
+		exit 4
+	fi
+
+else
+	# if hex input file does not exist
+	if test ! \( -f $inputHex \) ;then
+		echo $error
+		echo "Input file not found!"
+		echo "$ec 1..."
+		exit 1
+	fi
+
+	# copy input hex to output hex
+	$copy $inputHex $outputHex
+
+fi
+
+# if output only parameter isn't set
+if test $outputOnly = 0 ;then
+
+	# convert name into partno parameter for avrdude
+	case $atType in
+		"atmega8") dAtType="m8" ;;
+		"atmega16") dAtType="m16" ;;
+		"atmega32") dAtType="m32" ;;
+		"atmega64") dAtType="m64" ;;
+		"atmega128") dAtType="m128" ;;
+		
+		"attiny10") dAtType="t10" ;;
+		"attiny13") dAtType="t13" ;;
+		"attiny15") dAtType="t15" ;;
+		
+		# if name isn't supported, partno parmeter is type argument
+		*) dAtType=$atType ;;
+	esac
+
+	# execute avrdude
+	$dude $dudeT $dAtType $dudeD $dev $dudeP $prog $dudeHex$outputHex 
+
+	eTmp=$?
+
+	# if avrdude retruns an error, display error and abort
+	if test ! \( $eTmp = 0 \) ;then
+		echo $error
+		echo "$dude returned $eTmp"
+		echo "Aborting..."
+		echo "Unable to send hex file to $atType"
+		echo "$ec 5..."
+		exit 5
+	fi
+fi
+
+# set end time
+eTimeN=`date +%N`
+eTimeS=`date +%s`
+
+# calculate time difference
+dTimeN=`echo "scale=0; ($eTimeN - $sTimeN) / 1000000" | bc`
+dTimeS=`echo "scale=0; ($eTimeS - $sTimeS)" | bc`
+
+################################
+# summary
+################################
+
+echo "\n"
+
+echo "Summary:"
+if test $usingC ;then
+	echo " Source(s): $inputC"
+fi
+if test $usingAsm ;then
+	echo "Source(s): $inputAsm"
+fi
+echo " Hex-File: $outputHex"
+echo " Device: $dev"
+echo " Programmer: $prog"
+echo " Compiler: $compiler"
+echo " Hex-File-Coder: $objcopys"
+echo " Driver: $dude"
+echo " Time: $dTimeS s $dTimeN ms"
+echo ""
+
+echo "Writing successfully!"
+
+
+exit 0