#!/bin/bash


if [ "$#" -ne 2 ]; then
	echo "Usage: $0 <kick13.rom> <output.rom>"
	exit 1
fi

kick=$1
outfile=$2

md5=($(md5sum $kick))

if [ "$md5" != "82a21c1890cae844b3df741f2762d48d" ]; then
	echo "Error: $kick is not the right Kickstart ROM."
	echo "We need Kickstart 1.3 revision 34.5 (md5sum: 82a21c1890cae844b3df741f2762d48d)."
	echo
	echo "Aborted."
	exit 1
fi

echo "OK: $kick seems to be the right version."
echo "Writing $outfile..."
dd if=$kick bs=1 count=165558 of=$outfile
echo -n -e '\x01\x80' >> $outfile
dd if=$kick bs=1 skip=165560 count=122 >> $outfile
tail -n +52 $0 | base64 -d >> $outfile 
dd if=$kick bs=1 skip=166956 count=95188 >> $outfile
echo "Done."
echo

size=$(wc -c <"$outfile")

if [ "$size" = "262144" ]; then
	echo "OK: File size 262144"
else
	echo "Error: File size ($size) not as expected (262144)"
fi

md5=($(md5sum $outfile))

if [ "$md5" = "e463f714fe4dfba6ed02dc6e472136e5" ]; then
	echo "OK: Patched file looking good (md5sum as expected)" 
else
	echo "Error: File contents seem off (expected md5sum: e463f714fe4dfba6ed02dc6e472136e5)"
fi


exit 0


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