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1. RAMGS15 分配给CPU2，CPU2有读写权限，而CPU1只读权限。 CPU1如果对此RAM空间写入数据是无效的，但编译器不会提示错误，CPU有没有办法做保护。
2. 如果CPU1和CPU2同时访问RAMGS15会怎样，优先级低的CPU会出现什么情况？
3. IPC模块通信时间大概多少？
