Instruction extension method and system for singlechip microcomputer

Abstract

The invention provides an instruction extension method and an instruction extension system for a singlechip microcomputer. The method comprises the following steps: identifying a used instruction set and a non-used instruction set in a singlechip microcomputer assembly instruction set, determining an occupied space of the non-used instruction set in the singlechip microcomputer assembly instruction set, designing an instruction for processing 16-bit data in the occupied space of the non-used instruction set to obtain a 16-bit extension instruction, and integrating the used instruction set and the 16-bit extension instruction by a macro definition mode to obtain an integrated assembly instruction set. In the whole process, an instruction optimizing method aiming at multi-bit data is provided, so that no more instructions for decomposing operation are needed, and the instruction execution period is shortened to 1 period; meanwhile, the usability and the execution efficiency of a code space are improved; under the condition that a 16-bit CPU is not replaced, a demand can be met, and the cost is reduced; furthermore, the multi-bit data processing capacity of an 8-bit CPU is improved, and the operating efficiency of the singlechip microcomputer can be effectively promoted to be further improved.

Description

technical field [0001] The invention relates to the technical field of single-chip microcomputers, in particular to a single-chip microcomputer instruction extension method and system. Background technique [0002] Single-chip microcomputer, the full name of single-chip microcomputer, also known as microcontroller, is a microcomputer that integrates a central processing unit, memory, timer / counter, and various input and output interfaces on an integrated circuit chip. Compared with general-purpose microprocessors used in personal computers, it places more emphasis on self-supply (no external hardware) and cost savings. Its biggest advantage is that it is small in size and can be placed inside the instrument, but it has small storage capacity, simple input and output interfaces, and low functions. [0003] In order to meet people's continuous needs, researchers have developed some single-chip microcomputers with strong computing power, such as the existing 8051 single-chip m...

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Problems solved by technology

[0004] Based on this, it is necessary to provide a single-chip instruction extension method and system that can promote the further improvement of single-chip operating efficiency for the problem that the general single-chip instruction extension method restricts the further improvement of the single-chip operating efficiency

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