Electronic system programe loading method

An electronic system and program loading technology, applied in the field of electronics, can solve problems such as lack of flexibility, and achieve the effects of great flexibility, easy operation, and saving CPU area.

Active Publication Date: 2008-03-12
HANGZHOU NATCHIP SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that it lacks flexibility, and once the non-volatile memory that requires a different loading protocol is replaced, this method will fail

Method used

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  • Electronic system programe loading method
  • Electronic system programe loading method
  • Electronic system programe loading method

Examples

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Embodiment Construction

[0037] A specific embodiment of the present invention will be described below in conjunction with accompanying drawings 6 and 7 of the description.

[0038] This specific embodiment relates to a router whose hardware structure includes a CPU 801 , a non-volatile memory 802 , an RS232 serial communication interface 803 , an SDRAM 806 and several Ethernet ports 807 .

[0039] In this embodiment, a personal computer 805 is used as an external device.

[0040] When designing the CPU, part A of the start-up program is solidified in the CPU. The detailed flow of part A is shown as 711-717 in FIG. 7 and will be described later.

[0041] When designing the circuit board, select SDRAM and non-volatile memory with specific capacity and brand model according to product positioning and device price. And write the application program and boot program part B for that specific capacity and brand model of SDRAM and non-volatile memory.

[0042] During the maintenance and upgrade process, lo...

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PUM

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Abstract

This invention discloses a loading method used in electronic system program. The startup program consists of two parts; one was integrated into the CPU and the other was obtained from exterior equipment via serial interface. The advantages are as follows: no conversion circuit was needed in the loading process owing to the serial interface instead of JTAG interface; the method is flexible.

Description

technical field [0001] The invention belongs to the field of electronic technology, in particular to a method for loading electronic system programs. Background technique [0002] Modern electronic systems generally include parts such as CPU, non-volatile memory and communication interface. The application program is stored in non-volatile memory. During the production, maintenance and upgrade of the equipment, the application program needs to be loaded into the non-volatile memory. [0003] There are currently five loading methods as follows. [0004] Existing method 1: as shown in FIG. 1 , use a programmer to load the application program into the non-volatile memory 102, and then install the non-volatile memory 102 into the device. The disadvantage is that if you need to reload the application program to the non-volatile memory during the maintenance and upgrade of the device, you need to open the device shell, remove the non-volatile memory, load the application progra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/445
Inventor 梁坚曾荣跃黄智杰
Owner HANGZHOU NATCHIP SCI & TECH
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