Dawning Information Industry Co., Ltd.

Tianjin Hospital

Ying Wang

Hui Wang

Jianxiong Ma

Yan Li

Lei Sun

Chenming Zheng

Shengjie Liu

Zhibin Hao

Zongyou Shao

Faqing Liang

Wenhao Yao

Xinchun Liu

Xiaojun Yang

Bin Lu

Haohao Bai

Zhichao Wu

Xinlong Ma

Hongzhen Jin

The present invention discloses a method and a device to debug the Loongson CPU (a MIPS-structure CPU) and bridge chips. The device, including HT bus interfaces and the corresponding switches, connects the Loongson CPU and bridge chips through HT bus interfaces. Southbridge chips and northbridge chips with HT buses are selected in the following order: introducing the pins on the Loongson CPU and bridge chips into the debug device; debugging the pins on the Loongson CPU to identify whether there are any bugs with the pins; connecting the pins from the CPU and bridge chips to debug them. If the HT bus of the Loongson CPU fails to accord with the standard protocol, the problematic signal can be identified and further adjusted to improve the CPU. With the help of FPGA, multiple HT bus interfaces can be simulated. As a result, multiple chipsets can be linked to the Loongson CPU, which may be debugged simultaneously.

Method and device for debugging a MIPS-structure CPU with southbridge and northbridge chipsets

Growing community of inventors

Tianjin, China

Ying Wang