Because DMA frees the processor from involvement in the transfer process, it tends to be faster than PIO (Programmed Input/Output) mode.2. With an ISA (Industry Standard Architecture) bus, DMA is channels used by communications devices, such as SCSI (Small Computer System Interface), sound ...
Usually, a specified portion of memory is designated as an area to be used for direct memory access. For example, in theIndustry Standard Architecturebus standard, up to 16 MB of memory can be addressed for DMA. Other bus standards might allow access to the full range of memory addresses. ...
参考文献 [1] Tang Dan,Bao Yungang,Hu Weiwu,et al.DMA cache:using on-chip storage to architecturally separate I/O data from CPU data for improving I/O performance[C].High Performance Computer Architecture(HPCA),2010 IEEE 16th International Symposium.Bangalore,India.January 9-14.2010:1-12. [2...
Lecture Notes in Computer Science The input/output memory management unit (IOMMU) was recently introduced into mainstream computer architecture when both Intel and AMD added IOMMUs to their... N Amit,M Ben-Yehuda,BA Yassour - International Conference on Computer Architecture 被引量: 17发表: 2010...
In this chapter we discuss the Direct Memory Access (DMA) functionality of the Cell architecture. Sender and receiver initiated DMA plays a significant rol... L Number 被引量: 5发表: 2004年 What is Direct Memory Access (DMA)? In this chapter we discuss the Direct Memory Access (DMA) func...
选用AMBA(Advanced Microcontroller Bus Architecture)总线连接各IP核。其中,AXI(Advanced Extensible Interface)总线是一种高性能、高带宽、低延迟的片内总线[6]。它的地址/控制和数据相位是分离的,支持不对齐的数据传输,同时在突发传输中,只需要首地址。支持分离的读写数据通道、并支持显著传输访问和乱序访问,更加容易...
DE10048072A1 2000年9月28日 2001年4月26日 Infineon Technologies Corp Direct memory access (DMA) descriptor architecture for access to computer storage devices has increased access speed by enabling one DMA descriptor to contain more that one data pointer...
640 KB to 1 MB in all IBM-compatible PCs: the physical addresses exist but they are reserved, and the corresponding page frames cannot be used by the operating system. 3 Additional page frames within the first megabyte may be reserved by specific computer models. For ...
A cluster of PCs architecture suggests that interconnections get faster and overhead and latency in networks go down while operating system operations get slower. In clusters these factors are very important because an intensive data transfer between hosts. These trends imply that a DMA operation ...
DMA experimental tests in the context of the Cell processor architecture, and perform mathematical analysis to setup a unified formula on the average bandwidth of DMA by means of exponential fitting, which describes that SPE amount and DMA block size take main effects on DMA bandwidth in quantity...