CONTROL UNIT AND METHOD OF PROTECTING COMPUTER VIRUS

摘要

The method that adds the virus preventing program to interrupt 13H that accesses data in the hard disk and processes this prevention program by the option ROM. This method can detect new virus program to prevent the virus. This controller comprises a ROM (10) in which computer virus program is saved, a SRAM (20) that executes the control program, an address decoder (30) that designates SRAM and ROM as the address from the CPU (40).