METHOD FOR INTEGRATING SOURCE PROGRAM INTO MICROPROCESSOR AND MICROPROCESSOR INCORPORATED WITH SAFETY PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a method for integrating a safe program into a CPU to be connected to a memory containing plural storage areas in a microprocessor card. ;SOLUTION: Series of predetermined address functions directly executable for a CPU 1 are stored in a 1st storage area 3 so that write in the 1st storage area can be protected. Further, a program in the form of series of instructions for activating the functions executable in a 2nd storage area 4 or included in the 1st storage area is stored in the 2nd storage area 4 to keep the program safe.;COPYRIGHT: (C)1997,JPO