稍微简单的一种模式是相对寻址模式，它会根据当前程序计数器来计算地址。
A similar mode is relative addressing mode, which calculates the address based on the current program counter.
因此需要相对的寻址偏移(offset addressing)。
一种按固定长度数据块来存储数据的磁盘存储设备，这些数据块按相对于某文件开始的块号进行寻址。
A disk storage device that stores data in blocks of fixed size; these blocks are addressed by block number relative to the beginning of the particular file.
但由于这些微处理器系统的运行速度、寻址能力和功耗等问题，已较难满足相对复杂的嵌入式应用场合。
But because these microprocessor operation speed , seek location ability and consumption , etc. it has been more difficult to be satisfied and relatively complicated to use the occasion embeddedly.
相对于计算机内存，虚拟化是指使用软件，以允许程序能够寻址的内存比实际能使用的要大得多。
Relative to computer memory, virtualization is the use of software to allow a program to address a much larger amount of memory than is actually available.
相对于计算机内存，虚拟化是指使用软件，以允许程序能够寻址的内存比实际能使用的要大得多。
Relative to computer memory, virtualization is the use of software to allow a program to address a much larger amount of memory than is actually available.
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