| 摘要 |
PURPOSE:To enable a personal computer operator to select an operating system OS which is actuated by a personal computer with no complicated operation, by using a system file storing plural systems OS to attain the rise of a personal computer system. CONSTITUTION:A system file FD14 stores plural operating systems OS, and a slide switch 1 is set to send the selection signal to a CPU circuit 3 of a personal computer for selection of an OS. The power supply of the personal computer is applied after the switch 1 is set. Then a floppy disk FD is loaded to an FD device. A program address for rise of a personal computer system corresponding to an OS type set previously by the switch 1 is selected by an address switching circuit 5. Then the designated OS is read out of a BIOS storing circuit 6 by said program address. The circuit 3 rises the system with the designated OS and executes a program.
|
