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TMS320C6748: mailbox消息地址不可读

Part Number: TMS320C6748

您好,我在使用C6748的芯片中使用一个软中断post了一个邮箱信息,在Task中pend邮箱消息,邮箱max number为100,但是在post完第23条消息的时候,task中pend接收完的消息显示

Memory Map Prevented reading 0x00000001

Memory Map Prevented reading 0x00000005

Memory Map Prevented reading 0x00000007

当我把max number改大之后 问题似乎不见了。

请问是哪里出现了问题??