Processor system and method using multi memory of start-up procedure

Abstract

This invention discloses a kind of processor system and startup method by using multiple boot program memorize. The processor system comprises: processor unit, selection signal generating unit, at least two-boot program memorize that connect with processor unit through data bus and address bus. The selection signal-generating unit connects with the processor unit and at least two-boot program memorize. It features that it comprises the selection signal generation control unit, which connects with processor unit and selection signal generating unit; the non-volatile alterative memory that connects with the said selection signal generation control unit. The processor system doesn't need added content error detection apparatus. The processor doesn't need content error detection. It can identify the error of boot program automatically. It resets automatically and switches to another boot program memory to startup under the situation of cannot start.

Description

technical field [0001] The invention relates to a processor system, in particular to a processor system including two boot program memories and a boot method thereof. Background technique [0002] Processor systems are widely used in many fields including embedded applications and traditional computer fields. In a processor system, a boot program is the basic software of the processor system. The main function of the startup program is to initialize the processor system and make the system start and run. In a traditional computer, it is called the Basic Input-Output System (BIOS), which mainly provides the most basic hardware test when the computer is running, defines the characteristics of the computer and handles basic work. The startup program is generally stored in a non-volatile, electrically rewritable memory, such as Flash memory, E 2 PROM, etc., can retain the content in the case of power failure to ensure that it can be started normally when the next power is tur...

AI Technical Summary

Problems solved by technology

The defect of the technology is that there is an additional error detection circuit, which is difficult to realize, and at the same time, a BIOS storage device cannot be programmed

All the above-mentioned technologies also have a big defect, that is, there is a master-slave setting in the boot program memory. After power failure, it must start from a boot program memory by default. There is a greater risk when the default boot program memory fails.

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