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IPC例程中问题



在IPC例程中有如下代码

interruptCfg intInfo[MAX_SYSTEM_VECTOR] =
{
    /* core   event   vector*/
    {  0,     90,     CSL_INTC_VECTID_4, &IPC_ISR},
    {  1,     90,     CSL_INTC_VECTID_4, &IPC_ISR},
    {  2,     90,     CSL_INTC_VECTID_4, &IPC_ISR},
    {  3,     90,     CSL_INTC_VECTID_4, &IPC_ISR},
    {  0,     63,     CSL_INTC_VECTID_5, &Test_ISR},
};

其中event都是设置的90,而6678参考手册上却是91号,如下图所示,请问这是为什么呢?

注:把代码中90号改成91号,程序是有问题的。