Special instruction set processor based on scalable processor architecture and its implementation method

Abstract

The invention discloses an ASIP based on an extensible processor architecture and a realizing method thereof, which mainly solve the problem of high circuit complexity and large resource consumption in the prior art. Aiming at the extensible processor architecture after optimization, the invention adopts a five-level-pipeline realizing method, and adopts a data orientation technology and a branch non-execution strategy to solve data hazards and control hazards in pipeline treatment respectively. The ASIP comprises an instruction fetch unit, a decoding unit, an execution unit, a memory access unit, a write-back unit, a pipeline control unit, a timer and an interrupt controller. According to the ASIP and the method, the characteristics of a pipeline processor and an FPGA (field-programmable gate array) are considered sufficiently, the pipeline structure is partitioned reasonably, and the hardware resources of the FPGA are utilized to the utmost extent; and the ASIP and the method have the advantages of simple circuit design, low resource consumption, high processor performance and low power consumption, and are highly suitable for large-scale parallel processing.

Description

technical field [0001] The invention belongs to the field of electronic technology, and further relates to a special-purpose instruction set processor based on an extensible processor architecture in the field of reduced instruction set microprocessor technology and an implementation method thereof. The invention can be applied to embedded processors, especially in aerospace image processing to realize large-scale parallel processing. Background technique [0002] Application-specific instruction set processor technology is a processor specially designed for a specific application and a certain field of application. It satisfies the required performance, cost and power requirements by studying certain characteristics of the application. General-purpose processors are a balance between these two extremes. Special instruction set processors are widely used in digital signal processing, audio and video processing, image processing and other fields due to their strong specifici...

AI Technical Summary

Problems solved by technology

The disadvantage of this patent application is that the proposed four-stage pipeline structure cannot be applied to the addressing mode of base address plus index, and this patent application does not have typical processor architecture support. In addition, this patent application does not implement floating-point arithmetic , timer and interrupt management and other commonly used functions, the function is relatively single, and it is greatly limited in practical applications

The disadvantage of this patented technology is that the whole system is too complex, consumes a lot of hardware resources, and is not suitable for large-scale parallel processing of processors.

Images