Method for realizing online debugging on application codes of 51 soft core

Abstract

The invention provides a method for realizing online debugging on application codes of a 51 soft core. The method comprises the following steps: by modification of the 51 soft core and a Monitor-51, merging an independent external data space of the 51 soft core with a code space to form a unified readable-writable external memory space RAMx and generate an FPGA (field programmable gate array) configuration data file containing the 51 soft core; downloading the FPGA configuration data file containing the 51 soft core into an FPGA, thereby realizing online debugging on the application codes of the 51 soft core. The method is practical and feasible; the development period of a programmable system-on-chip based on the 51 soft core is shortened greatly; and the method is applicable to MC8051 cores and other 51 soft cores.

Description

technical field [0001] The invention relates to electronic computer technology, in particular to single-chip microcomputer debugging technology. Background technique [0002] With the development of Field Programmable Logic Array (FPGA) and Electronic Design Automation (EDA) technologies, million-gate FPGAs, reconfigurable embedded MCUs, complex IP cores (Intellectual Property cores) and various functions The emergence of powerful EDA tools has made it possible to integrate MCU, memory and some peripheral circuits into one chip. With the application of IP core technology in FPCA, especially the development of MCU IP core technology. Various embedded MCU soft cores with different performances have appeared. [0003] MCS-51 series MCU is currently the most powerful 8-bit MCU with the longest application time, the most popular, and the most available application materials. The establishment of 8051MCU's comprehensive IP core has greatly promoted the application of various em...

AI Technical Summary

Problems solved by technology

[0010] It can be seen from the above development process that the development process of the MC8051 core in practical applications is time-consuming and laborious:

[0011] 1) Any small change in the code requires the developer to start over from the first step to generate the hex file;

[0012] 2) There are too many intermediate steps. If there is an error, it is difficult to judge which step in the development process is wrong.

It may also be an error in the MCU code, or a file conversion error, or an error in the FPGA code

[0013] 3) Developers cannot monitor the changes of 8051 internal registers and variables in real time, which makes it difficult to find software errors

[0014] 4) The requirements for developers are high, and developers need to master not only the use of 51 development tools, but also the use of FPGA development tools

And 51 soft cores such as MC8051 core are different from the 51 single-chip microcomputers of general entities because they are the nature of the soft MCU core. The existing Monitor-51 online debugging method for 51 single-chip microcomputers cannot be used for 51 soft cores

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