95/12/22 v1.0.0      Initial release
95/12/29 v1.0.1  395 Cleaned to be able to compile other compiler than GCC
96/11/25 v1.1.0      Add LBP-2030 support (msatoh@mrit.mei.co.jp)
97/04/01 v1.2.0      gs4.03 support and bug fix
