Designing method for computer CPU anti-interference

Abstract

The invention relates to a designing method for anti-interference property of computer CPU, comprising adding program tracking address register (PTAR), program tracking flag register (PTFR) and program interference flag register (PIFR) and additionally adding three select two counter (CPC), three select two instruction register (ICR) and adding nonscreened interruption (NSI). And a computer designed by this method can both effectively monitor program counter (PC) interference and instruction interference and records the interference interruption point and restoration interruption of the program, therefore provided with the characters of stronger anti-interference property, more accurate and reliable interference judgment, more effective failure treatment as well as real-time property, repairability and scientificalness.

Description

technical field [0001] The invention relates to a computer CPU anti-interference design method. Background technique [0002] The anti-interference of computer control system is an important issue that must be considered in its software and hardware design, and the anti-interference problem of program counter PC, commonly known as "program runaway", is one of the main problems to be solved in the design. The existing common method to solve "program running away" is to set "Watchdog" monitor, although it can reset the system when the program is disturbed, enters an endless loop or hardware failure, but there is a problem that the CPU failure cannot be found in time; the program is complicated It is not easy to determine the location of the "Watchdog" instruction in the software; it cannot play a role when it enters an infinite loop; it is usually suitable for a series of defects such as small computer control systems; The design method of " (patent number is 99115776.1) has ...

AI Technical Summary

Problems solved by technology

[0004] It can be seen from the above analysis that the invention patent of "A Design Method for Anti-interference of CPU Program Counter" (Patent No. 99115776.1) still has the following shortcomings: 1. It only solves the situation when the program counter PC is disturbed, but fails to solve the problem. The problem of data interference during the transmission of instructions; 2. Due to the addition of hardware and corresponding software in this invention patent, the anti-interference to the program counter PC is more complicated, and the compatibility of the computer designed by it is limited; 3. Existing technology It is only to judge the system error, that is, to judge whether it is disturbed, but it cannot record the specific "location" when the program instruction is disturbed, and cannot recover to the "breakpoint" before the disturbance. Therefore, the system can only be realized after the disturbance is discovered. Reset, the method of interference processing is not scientific