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Ultra DMA硬盘模式是97年由Quantum和Intel公司联合提出,由计算机硬件领域的几个“龙头老大”-Seagate公司、Intel公司和Quantum公司共同设计和开发的.现在,这种模式已被硬盘厂商广泛采用.Ultra DMA(以后简称DMA)模式确立了新的性能走向,并具有多种优秀的性能.该模式充分利用了硬盘上的DMA控制器,使硬盘在数据传输过程中无需CPU的过多介入,从而使得CPU可以一心一意地处理其它事务.而且DMA模式还能让IDE时序中的时钟脉冲的正负两项同时工作,一改过去的单项工
The Ultra DMA model was co-authored by Quantum and Intel Corp. in 1997 and was co-designed and developed by several leading chipmakers in the field of computer hardware-Seagate Inc., Intel Corp., and Quantum Inc. Now that this model has been adopted by hard drive manufacturers Widely used.Ultra DMA (hereinafter referred to as DMA) mode to establish a new performance trend, and has a variety of excellent performance.This mode takes full advantage of the DMA controller on the hard disk so that the hard disk in the data transfer process without CPU too much Intervention, so that the CPU can wholeheartedly handle other transactions.And DMA mode also allows the clock timing of the IDE timing positive and negative two work at the same time, changing the past single