# Download hp41uc-code-3.00-dm41.patch.gz and Makefile
git clone git://git.code.sf.net/p/hp41uc/code hp41uc-code
cd hp41uc-code
git checkout 2b6cfc0
zcat ../hp41uc-code-3.00-dm41.patch.gz | patch -p1
cp ../Makefile .
make