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TMS320F28335: RPT #(N−1) || PREAD *XAR2++,*XAR7 运行时间

Part Number: TMS320F28335

TMS320F28335仿真中

 RPT #10

|| PREAD *XAR2++,*XAR7 

 RPT #10

|| PREAD *XAR2++,*XAR7 

这两个指令执行时间相差3cycle

根据TMS320C28x CPU and Instruction Set (Rev. F)手册的368页描述两者相差1cycle。

仿真结果与手册出现差别的原因是什么