Here, there are three entities: one is the base address, the second is the index register, and the third is the multiplier. 这里有三项数据:一个是基地址,第二个是索引寄存器,第三个是乘数。
Thirdly, when token packet transmitted, "Remapping Specific I/ O Regions" technique is used to allow user accessing device's base address register directly and avoid the unnecessary expense that would be caught in frequently access kernel. 当传输信令帧时通过I/O域重映射技术,由用户程序直接对网络设备的基地址寄存器进行读写,减少了频繁陷入内核带来的开销。