C6678软件仿真错误

使用C6678使用自带的helloworld进行软件仿真时，遇到了如下错误：

[TMS320C66x_0] Invalid CIO command (255) in the CIO buffer at address (0xC3173C0) was not recognized. Please check the device and program memory maps.
[TMS320C66x_1] Invalid CIO command (255) in the CIO buffer at address (0xC3173C0) was not recognized. Please check the device and program memory maps.

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请问这是怎么回事？

下面是target设置和测试时的情况

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