| 摘要 |
PURPOSE:To prevent the normal reading of a program written in a floppy disk medium through a conversion adaptor which converts a control signal without allowing the program to be transmitted through the conversion adaptor. CONSTITUTION:This system is equipped with a conversion adaptor 2 which code-converts at least one signal among plural interface signals from a host device 1 to a floppy disk drive 3 at the time of storing the program from the host device 1 through the floppy disk drive 3 in the floppy disk medium. At the time of reading the program from the floppy disk medium, the host device 1 is connected through the conversion adaptor 2 to the floppy disk drive 3. |
