diff --git a/software/tools/assemble_rfs.sh b/software/tools/assemble_rfs.sh
new file mode 100755
index 0000000..8d33210
--- /dev/null
+++ b/software/tools/assemble_rfs.sh
@@ -0,0 +1,64 @@
+#!/bin/bash
+#########################################################################################################
+##
+## Name:            assemble_roms.sh
+## Created:         August 2018
+## Author(s):       Philip Smart
+## Description:     Sharp MZ series ROM assembly tool
+##                  This script takes Sharp MZ ROMS in assembler format and compiles/assembles them
+##                  into a ROM file using the GLASS Z80 assembler.
+##
+## Credits:         
+## Copyright:       (c) 2018 Philip Smart <philip.smart@net2net.org>
+##
+## History:         August 2018   - Initial script written.
+##
+#########################################################################################################
+## This source file is free software: you can redistribute it and#or modify
+## it under the terms of the GNU General Public License as published
+## by the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This source file is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#########################################################################################################
+
+TOOLDIR=../../tools
+JARDIR=../../tools
+ASM=glass.jar
+BUILDROMLIST="rfs rfs_mrom"
+BUILDMZFLIST=""
+ASMDIR=../software/asm
+INCDIR=../software/asm/include
+ROMDIR=../software/roms
+MZFDIR=../software/mzf
+
+# Go through list and build image.
+#
+for f in ${BUILDROMLIST} ${BUILDMZFLIST}
+do
+    echo "Assembling: $f..."
+
+    # Assemble the source.
+    echo "java -jar ${JARDIR}/${ASM} ${ASMDIR}/${f}.asm ${ASMDIR}/${f}.obj ${ASMDIR}/${f}.sym"
+    java -jar ${JARDIR}/${ASM} ${ASMDIR}/${f}.asm ${ASMDIR}/${f}.obj ${ASMDIR}/${f}.sym -I ${INCDIR}
+
+    # On successful compile, perform post actions else go onto next build.
+    #
+    if [ $? = 0 ]
+    then
+        # The object file is binary, no need to link, copy according to build group.
+        if [[ ${BUILDROMLIST} = *"${f}"* ]]; then
+            echo "Copy ${ASMDIR}/${f}.obj to ${ROMDIR}/${f}.rom"
+            cp ${ASMDIR}/${f}.obj ${ROMDIR}/${f}.rom
+        else
+            echo "Copy ${ASMDIR}/${f}.obj to ${MZFDIR}/${f}.mzf"
+            cp ${ASMDIR}/${f}.obj ${MZFDIR}/${f}.mzf
+        fi
+    fi
+done
diff --git a/software/tools/assemble_roms.sh b/software/tools/assemble_roms.sh
new file mode 100755
index 0000000..cf69cde
--- /dev/null
+++ b/software/tools/assemble_roms.sh
@@ -0,0 +1,64 @@
+#!/bin/bash
+#########################################################################################################
+##
+## Name:            assemble_roms.sh
+## Created:         August 2018
+## Author(s):       Philip Smart
+## Description:     Sharp MZ series ROM assembly tool
+##                  This script takes Sharp MZ ROMS in assembler format and compiles/assembles them
+##                  into a ROM file using the GLASS Z80 assembler.
+##
+## Credits:         
+## Copyright:       (c) 2018 Philip Smart <philip.smart@net2net.org>
+##
+## History:         August 2018   - Initial script written.
+##
+#########################################################################################################
+## This source file is free software: you can redistribute it and#or modify
+## it under the terms of the GNU General Public License as published
+## by the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This source file is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#########################################################################################################
+
+TOOLDIR=../../tools
+JARDIR=../../tools
+ASM=glass.jar
+BUILDROMLIST="rfs rfs_mrom IPL monitor_SA1510 monitor_80c_SA1510 monitor_mz-1r12 quickdisk_mz-1e05 quickdisk_mz-1e14 monitor_1Z-013A monitor_80c_1Z-013A"
+BUILDMZFLIST="hi-ramcheck sharpmz-test"
+ASMDIR=../software/asm
+INCDIR=../software/asm/include
+ROMDIR=../software/roms
+MZFDIR=../software/mzf
+
+# Go through list and build image.
+#
+for f in ${BUILDROMLIST} ${BUILDMZFLIST}
+do
+    echo "Assembling: $f..."
+
+    # Assemble the source.
+    echo "java -jar ${JARDIR}/${ASM} ${ASMDIR}/${f}.asm ${ASMDIR}/${f}.obj ${ASMDIR}/${f}.sym"
+    java -jar ${JARDIR}/${ASM} ${ASMDIR}/${f}.asm ${ASMDIR}/${f}.obj ${ASMDIR}/${f}.sym -I ${INCDIR}
+
+    # On successful compile, perform post actions else go onto next build.
+    #
+    if [ $? = 0 ]
+    then
+        # The object file is binary, no need to link, copy according to build group.
+        if [[ ${BUILDROMLIST} = *"${f}"* ]]; then
+            echo "Copy ${ASMDIR}/${f}.obj to ${ROMDIR}/${f}.rom"
+            cp ${ASMDIR}/${f}.obj ${ROMDIR}/${f}.rom
+        else
+            echo "Copy ${ASMDIR}/${f}.obj to ${MZFDIR}/${f}.mzf"
+            cp ${ASMDIR}/${f}.obj ${MZFDIR}/${f}.mzf
+        fi
+    fi
+done
diff --git a/software/tools/mzftool.pl b/software/tools/mzftool.pl
new file mode 100755
index 0000000..aa70ada
--- /dev/null
+++ b/software/tools/mzftool.pl
@@ -0,0 +1,665 @@
+#! /usr/bin/perl
+#########################################################################################################
+##
+## Name:            mzftool.pl
+## Created:         August 2018
+## Author(s):       Philip Smart
+## Description:     Sharp MZ series MZF (Sharp Tape File)  management tool.
+##                  This script identifies the type of MZF file and can add or delete headers as required.
+##                  Useful for seperating MZF compilations into Basic/Pascal/Machine Code etc.
+##                  Also useful to add headers to homegrow machine code programs.
+##
+## Credits:         
+## Copyright:       (c) 2018 Philip Smart <philip.smart@net2net.org>
+##
+## History:         August 2018   - Initial script written.
+##
+#########################################################################################################
+## This source file is free software: you can redistribute it and#or modify
+## it under the terms of the GNU General Public License as published
+## by the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This source file is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#########################################################################################################
+
+# Title and Versioning.
+#
+$TITLE                  = "MZF Tool";
+$VERSION                = "0.1";
+$VERSIONDATE            = "25.09.2018";
+
+# Global Modules.
+#
+#use strict
+use Getopt::Long;
+use IO::File;
+use File::stat;
+use File::Copy;
+use Time::localtime;
+use POSIX qw(tmpnam);
+use Env qw(KPLUSHOME3 SYBASE SYBASE_OCS DSQUERY);
+use sigtrap qw(die normal-signals);
+
+# Error return codes.
+#
+$ERR_BADFILENAME        = 1;
+$ERR_BADFILEDATA        = 2;
+$ERR_BADFILECREATE      = 3;
+$ERR_BADFUNCARGS        = 4;
+$ERR_BADSYSCALL         = 5;
+$ERR_BADCHECK           = 6;
+$ERR_BADENV             = 7;
+$ERR_SYBSERVER          = 8;
+$ERR_BADARGUMENTS       = 9;
+
+# Run-time constants.
+#
+$PROGNAME               = $0;
+
+# Run-time globals. Although in Perl you can just specify variables, keeping with most
+# high-order languages it is good practise to  specify non-local variables in a global header
+# which aids visual variable tracking etc.
+#
+$dbh                    = 0;                        # Handle to a Sybase object.
+$logh                   = 0;                        # Handle to open log file.
+$logName                = "";                       # Temporary name of log file.
+$logMode                = "terminal";               # Default logging mode for logger.
+
+
+# Configurables!!
+#
+$SENDMAIL               = "/usr/lib/sendmail -t";
+@errorMailRecipients    = ( "philip.smart\@net2net.org" );
+$errorMailFrom          = "error\@localhost";
+$errorMailSubject       = "MZF Tool Errors...";
+$PERL                   = "perl";
+$PERLFLAGS              = "";
+
+
+##################################################################################
+# GENERIC SUB-ROUTINES
+##################################################################################
+
+# Sub-routine to close the log file and email its contents to required participants.
+#
+sub logClose
+{
+    # Locals.
+    local( $idx, $line, @mailRecipients, $mailFrom, $mailSubject, $mailHeader );
+
+    # No point closing log if one wasnt created!!
+    #
+    if($logName eq "" || $sendEmail == 0)
+    {
+        return;
+    }
+
+    # Back to beginning of file, to copy into email.
+    #
+    seek($logh, 0, 0);
+
+    # Build up an email to required recipients and send.
+    #
+    open(SENDMAIL, "|$SENDMAIL") or die "Cannot open $SENDMAIL: $!";
+    for($idx=0; $idx < @errorMailRecipients; $idx++)
+    {
+        print SENDMAIL "To: $errorMailRecipients[$idx]\n";
+    }
+    print SENDMAIL "Reply-to: $errorMailFrom\n";
+    print SENDMAIL "From: $errorMailFrom\n";
+    print SENDMAIL "Subject: $errorMailSubject\n";
+    print SENDMAIL "Content-type: text/plain\n\n";
+    while( $line = <$logh> )
+    {
+        chomp($line);
+        print SENDMAIL "$line\n";
+    }
+    close(SENDMAIL);
+
+    # Delete the logfile, not needed.
+    #
+    unlink($logName) or die "Couldn't unlink Error File $logName : $!";
+}
+
+# Function to write a message into a log file. The logfile is a temporary buffer, used
+# to store all messages until program end. Upon completion, the buffer is emailed to required
+# participants.
+#
+sub logWrite
+{
+    # Get parameters, define locals.
+    local( $mode, $text ) = @_;
+    local( $date );
+
+    # Get current date and time for timestamping the log message.
+    #
+    $date = `date +'%Y.%m.%d %H:%M:%S'`;
+    chomp($date);
+
+    # In terminal mode (=interactive mode), always log to STDOUT.
+    #
+    if($logMode eq "terminal")
+    {
+        if(index($mode, "ND") == -1)
+        {
+            print "$date ";
+        }
+        print "$text";
+        if(index($mode, "NR") == -1)
+        {
+            print "\n";
+        }
+
+        # Die if required.
+        #
+        if (index($mode, 'die') != -1)
+        {
+            print "$date Terminating at program request.\n";
+            exit 1;
+        }
+        return;
+    }
+
+    # If the logfile hasnt been opened, open it.
+    #
+    if($logName eq "")
+    {
+        # Try new temporary filenames until we get one that doesnt already exist.
+        do {
+            $logName = tmpnam();
+        } until $logh = IO::File->new($logName, O_RDWR|O_CREAT|O_EXCL);
+
+        # Automatically flush out log.
+        $logh->autoflush(1);
+
+        # Only send email if we explicitly die.
+        #
+        $sendEmail = 0;
+
+        # Install an atexit-style handler so that when we exit or die,
+        # we automatically dispatch the log.
+        END { logClose($logh, $logName); }
+    }
+
+    # Print to log with date and time stamp.
+    #
+    print $logh "$date $text\n";
+
+    # Print to stdout for user view if in debug mode.
+    #
+    if($debugMode > 0)
+    {
+        print "$date $text\n";
+    }
+
+    # If requested, log termination message and abort program.
+    #
+    if (index($mode, 'die') != -1)
+    {
+        print $logh "$date Terminating at program request.\n";
+        $sendEmail = 1;
+        exit 1;
+    }
+}
+
+# Sub-routine to truncate whitespace at the front (left) of a string, returning the
+# truncated string.
+#
+sub cutWhiteSpace
+{
+    local( $srcString ) = @_;
+    local( $c, $dstString, $idx );
+    $dstString = "";
+
+    for($idx=0; $idx < length($srcString); $idx++)
+    {
+        # If the character is a space or tab, delete.
+        #
+        $c = substr($srcString, $idx, 1);
+        if(length($dstString) == 0)
+        {
+            if($c ne " " && $c ne "\t")
+            {
+                $dstString = $dstString . $c;
+            }
+        } else
+        {
+            $dstString = $dstString . $c;
+        }
+    }
+    return($dstString);
+}
+
+# Perl trim function to remove whitespace from the start and end of the string
+#
+sub trim($)
+{
+    my $string = shift;
+    $string =~ s/^\s+//;
+    $string =~ s/\s+$//;
+    return $string;
+}
+
+# Left trim function to remove leading whitespace
+#
+sub ltrim($)
+{
+    my $string = shift;
+    $string =~ s/^\s+//;
+    return $string;
+}
+
+# Right trim function to remove trailing whitespace
+#
+sub rtrim($)
+{
+    my $string = shift;
+    $string =~ s/\s+$//;
+    return $string;
+}
+
+# Sub-routine to test if a string is empty, and if so, replace
+# with an alternative string. The case of the returned string
+# can be adjusted according to the $convertCase parameter.
+#
+sub trString
+{
+    local( $tstString, $replaceString, $convertCase ) = @_;
+    local( $dstString );
+
+    $tstString=cutWhitespace($tstString);
+    $replaceString=cutWhitespace($replaceString);
+    if($tstString eq "")
+    {
+        $dstString = $replaceString;
+    } else
+    {
+        $dstString = $tstString;
+    }
+
+    # Convert to Lower Case?
+    #
+    if($convertCase == 1)
+    {
+        $dstString =~ lc($dstString);
+    }
+    # Convert to Upper Case?
+    #
+    elsif($convertCase == 2)
+    {
+        $dstString =~ uc($dstString);
+    }
+    return($dstString);
+}
+
+# Sub-routine to test if a numeric is empty, and if so, set to a
+# given value.
+#
+sub trNumeric
+{
+    local( $tstNumber, $replaceNumber ) = @_;
+    local( $dstNumber );
+
+    if(!defined($tstNumber) || $tstNumber eq "" || cutWhitespace($tstNumber) eq "")
+    {
+        $dstNumber = $replaceNumber;
+    } else
+    {
+        $dstNumber = $tstNumber;
+    }
+
+    return($dstNumber);
+}
+
+# Function to look at a string and decide wether its contents
+# indicate Yes or No. If the subroutine cannot determine a Yes,
+# then it defaults to No.
+#
+sub yesNo
+{
+    local( $srcString ) = @_;
+    local( $dstString, $yesNo );
+    $yesNo = "N";
+
+    $dstString=lc(cutWhiteSpace($srcString));
+    if($dstString eq "y" || $dstString eq "yes" || $dstString eq "ye")
+    {
+        $yesNo = "Y";
+    }
+    return( $yesNo );
+}
+
+# Sub-routine to encrypt an input string, typically a password,
+# using the Collateral Management Encrypt utility.
+#
+sub encrypt
+{
+    local( $srcPasswd ) = @_;
+    local( $encPasswd );
+    $encPasswd="";
+
+    # Call external function to perform the encryption.
+    #
+    if($srcPasswd ne "")
+    {
+        $encPasswd=`$PROG_ENCRYPT -p $srcPasswd 2>&1`;
+        chomp($encPasswd);
+    }
+    return($encPasswd);
+}
+
+# Sub-routine to test if a string is empty, and if so, replace
+# with an alternative string. The case of the returned string
+# can be adjusted according to the $convertCase parameter.
+#
+sub testAndReplace
+{
+    local( $tstString, $replaceString, $convertCase ) = @_;
+    local( $dstString );
+#printf("Input:$tstString,$replaceString\n");
+    $tstString=cutWhiteSpace($tstString);
+    $replaceString=cutWhiteSpace($replaceString);
+    if($tstString eq "")
+    {
+        $dstString = $replaceString;
+    } else
+    {
+        $dstString = $tstString;
+    }
+
+    # Convert to Lower Case?
+    #
+    if($convertCase == 1)
+    {
+        $dstString =~ lc($dstString);
+    }
+    # Convert to Upper Case?
+    #
+    elsif($convertCase == 2)
+    {
+        $dstString =~ uc($dstString);
+    }
+#printf("Output:$dstString:\n");
+    return($dstString);
+}
+
+# Subroutine to generate a unique name by adding 2 digits onto the end of it. A hash of existing
+# names is given to compare the new value against.
+#
+sub getUniqueName
+{
+    local( $cnt, $uniqueName ) = ( 0, "" );
+    local( $startName, $maxLen, $usedNames ) = @_;
+
+    # Go through looping, adding a unique number onto the end of the string, then looking it
+    # up to see if it already exists.
+    #
+    $uniqueName = substr($startName, 0, $maxLen);
+    while(defined($$usedNames{$uniqueName}))
+    {
+        $uniqueName = substr($uniqueName, 0, $maxLen-2) . sprintf("%02d", $cnt);
+        $cnt++;
+        if($cnt > 99)
+        {
+            logWrite("die", "Unique identifier > 99: $uniqueName");
+        }
+    }
+
+    # Return unique name.
+    #
+    return($uniqueName);
+}
+
+# Sub-routine to process command line arguments. New style POSIX argument format used.
+#
+sub argOptions
+{
+    local ( $writeUsage, $msg, $exitCode ) = @_;
+
+    if( $writeUsage == 1 )
+    {
+        print STDOUT "Usage: $PROGNAME <commands> [<options>]                                     \n";
+        print STDOUT "           commands= --help                                                |\n";
+        print STDOUT "                     --verbose                                             |\n";
+        print STDOUT "                     --command=<IDENT|ADDHEADER|DELHEADER>                 |\n";
+        print STDOUT "                     --mzffile=<file>          {IDENT|ADDHEADER|DELHEADER} |\n";
+        print STDOUT "                     --srcfile=<file>                        {ADDHEADER}   |\n";
+        print STDOUT "                     --dstfile=<file>                        {DELHEADER}   |\n";
+        print STDOUT "                     --filename=<name of tape file>          (ADDHEADER}   |\n";
+        print STDOUT "                     --loadaddr=<addr tape should load @>    (ADDHEADER}   |\n";
+        print STDOUT "                     --execaddr=<auto exec addr>             (ADDHEADER}   |\n";
+        print STDOUT "                     --tapetype=<1 byte type value>          (ADDHEADER}   |\n";
+        print STDOUT "                     --comment=<comment string>              (ADDHEADER}   |\n";
+        print STDOUT "           options = --debug=<1=ON, 0=OFF>\n";
+        print STDOUT "\n";
+    }
+    if($msg ne "")
+    {
+        print STDOUT "Error: $msg\n";
+    }
+    exit( $exitCode );
+}
+
+
+##################################################################################
+# END OF GENERIC SUB-ROUTINES
+##################################################################################
+
+
+##################################################################################
+#
+# MAIN PROGRAM
+#
+##################################################################################
+
+# Locals.
+#
+local( $time, $date, $mzfExists, $a_mromExists, $b_mromExists, $k_mromExists, $m7_mromExists, $m8_mromExists, $m12_mromExists, $m20_mromExists,
+       $a_80c_mromExists, $b_80c_mromExists, $k_80c_mromExists, $m7_80c_mromExists, $m8_80c_mromExists, $m12_80c_mromExists, $m20_80c_mromExists,
+       $mzf_type, $mzf_filename, $mzf_size, $mzf_loadaddr, $mzf_execaddr, $mzf_comment);
+
+# Get current time and date.
+#
+$time = `date +'%H:%M:%S'`;
+$date = `date +'%d.%m.%Y'`;
+chomp($time);
+chomp($date);
+
+# Sign-on.
+#
+print STDOUT "$TITLE (v$VERSION) \@ ${VERSIONDATE}\n\n";
+
+# Parse arguments and put into required variables.
+#
+$verbose = 0;
+$fileName = "";
+$s_loadAddr = "";
+$s_execAddr = "";
+$s_tapeType = "";
+$comment = "";
+GetOptions( "debug=n"               => \$debugMode,            # Debug Mode?
+            "verbose"               => \$verbose,              # Show details?
+            "mzffile=s"             => \$mzfFile,              # MZF file.
+            "dstfile=s"             => \$dstFile,              # Destination file (for header removal).
+            "srcfile=s"             => \$srcFile,              # Source file (for header adding).
+            "filename=s"            => \$fileName,             # Filename to insert into header.
+            "loadaddr=s"            => \$s_loadAddr,           # Tape load address.
+            "execaddr=s"            => \$s_execAddr,           # Tape execution address.
+            "tapetype=s"            => \$s_tapeType,           # Tape type (ie. 01 = Machine Code).
+            "comment=s"             => \$comment,              # Tape comment string.
+            "command=s"             => \$command,              # Command to execute.
+            "help"                  => \$help,                 # Help required on commands/options?
+          );
+
+# Help required?
+#
+if(defined($help))
+{
+    argOptions(1, "");
+} 
+
+# Convert number arguments from string to decimal.
+#
+if($s_loadAddr ne "")
+{
+    $loadAddr = oct($s_loadAddr);
+}
+if($s_execAddr ne "")
+{
+    $execAddr = oct($s_execAddr);
+}
+if($s_tapeType ne "")
+{
+    $tapeType = oct($s_tapeType);
+}
+
+# Verify command.
+#
+if($command eq "IDENT" || $command eq "ADDHEADER" || $command eq "DELHEADER")
+{
+    1;
+}
+else
+{
+    argOptions(1, "Illegal command given on command line:$command.\n",$ERR_BADARGUMENTS);
+}
+
+# Check that the additional parameters have been provided for the ADDHEADER command.
+if($command eq "ADDHEADER" && ($fileName eq "" || !defined($loadAddr) || !defined($execAddr) || !defined($tapeType)) )
+{
+    argOptions(3, "ADDHEADER command requires the following parameters to be provided: --filename, --loadaddr, --execaddr, --tapetype\n",$ERR_BADARGUMENTS);
+}
+
+# For ident or delete header commands, we need to open and read the mzf file.
+#
+if(($command eq "IDENT" || $command eq "DELHEADER") && defined($mzfFile) && $mzfFile ne "")
+{
+    # If defined, can we open it?
+    #
+    if( ! open(MZFFILE, "<".$mzfFile) )
+    {
+        argOptions(1, "Cannot open MZF file: $mzfFile.\n",$ERR_BADFILENAME);
+    }
+
+    @MZF = ();
+    binmode(MZFFILE); 
+    local $/ = \1;
+    $cnt = 0;
+    $skip = 0;
+    while ( my $byte = <MZFFILE> )
+    {
+        $MZF[$cnt] = $byte;
+        $cnt++;
+    }
+    $MZF_SIZE = $cnt;
+
+    # Once the MZF is in memory, analyse the details and output.
+    #
+    $mzf_header = pack('a'x128, @MZF);
+    ($mzf_type, $mzf_filename, $mzf_size, $mzf_loadaddr, $mzf_execaddr, $mzf_comment) = unpack 'c1 a17 v4 v4 v4 a104', $mzf_header;
+    $mzf_filename =~ s/\r|\n//g;
+
+    # Output detail if requested.
+    #
+    if($verbose)
+    {
+        printf STDOUT "File Name          : %s\n",   $mzf_filename;
+        printf STDOUT "File Type          : %02x\n", $mzf_type;
+        printf STDOUT "File Size          : %04x\n", $mzf_size;
+        printf STDOUT "File Load Address  : %04x\n", $mzf_loadaddr;
+        printf STDOUT "File Exec Address  : %04x\n", $mzf_execaddr;
+        printf STDOUT "Comment            : %s\n",   $mzf_comment;
+    }
+
+    # For the DELHEADER command, a destination needs to be provided and opened.
+    if($command eq "DELHEADER" && defined($dstFile) && $dstFile ne "")
+    {
+        if( ! open(DSTFILE, ">".$dstFile) )
+        {
+            argOptions(1, "Cannot open the destination file: $dstFile.\n",$ERR_BADFILENAME);
+        }
+    }
+} 
+elsif($command eq "ADDHEADER" && defined($mzfFile) && $mzfFile ne "") 
+{
+    # If defined, can we create it?
+    #
+    if( ! open(MZFFILE, ">".$mzfFile) )
+    {
+        argOptions(1, "Cannot create MZF file: $mzfFile.\n",$ERR_BADFILENAME);
+    }
+
+    # For this command, a source file needs to exist and opened.
+    if(defined($srcFile) && $srcFile ne "")
+    {
+        if( ! open(SRCFILE, "<".$srcFile) )
+        {
+            argOptions(1, "Cannot open the source file: $srcFile.\n",$ERR_BADFILENAME);
+        }
+
+        @SRC = ();
+        binmode(SRCFILE); 
+        local $/ = \1;
+        $cnt = 0;
+        $skip = 0;
+        while ( my $byte = <SRCFILE> )
+        {
+            $SRC[$cnt] = $byte;
+            $cnt++;
+        }
+        $SRC_SIZE = $cnt;
+    }
+}
+else
+{
+    argOptions(2, "No MZF file given, use --mzffile=<file>.\n");
+}
+
+# Process command as necessary.
+#
+if($command eq "ADDHEADER")
+{
+    # Build the header based on given information and size of src file.
+    $mzf_size = scalar @SRC;
+    $mzf_type = $tapeType; # For exit code.
+    $mzf_header  = pack('c1 a17 v v v', $tapeType, $fileName, $mzf_size, $loadAddr, $execAddr);
+    $mzf_header .=  pack('a104', $comment) ;
+
+    # Store in file.
+    print MZFFILE $mzf_header;
+    
+    # Now add the source data.
+    foreach my $byte (@SRC) { print MZFFILE $byte; }
+
+    # All done.
+    close MZFFILE;
+
+    # Output detail if requested.
+    #
+    if($verbose)
+    {
+        printf STDOUT "File Name          : %s\n",   $fileName;
+        printf STDOUT "File Type          : %02x\n", $tapeType;
+        printf STDOUT "File Size          : %04x\n", $mzf_size;
+        printf STDOUT "File Load Address  : %04x\n", $loadAddr;
+        printf STDOUT "File Exec Address  : %04x\n", $execAddr;
+        printf STDOUT "Comment            : %s\n",   $comment;
+    }
+}
+# For delete, simply write out the tape contents less the header (first 128 bytes).
+elsif($command eq "DELHEADER")
+{
+    my $cnt = 0;
+    foreach my $byte (@MZF) { if($cnt++ >= 128) { print DSTFILE $byte; } }
+    close DSTFILE;
+}
+
+# Exit code is the type of MZF file.
+exit $mzf_type;