Logical vs physical address 1) Anaddress generated by the CPUis a logical address. Whereas, anaddress seen by the memory unit, that is, the one loaded into the memory-address register of the memory, is aphysical address. 2) The user program never sees the physical addresses. The program ...
DMA操作前需要分配物理地址连续的一个Buffer,AllocateCommonBuffer函数提供了这个功能,该函数原型如下: PVOID AllocateCommonBuffer( _In_ PDMA_ADAPTER DmaAdapter, _In_ ULONG Length, _Out_ PPHYSICAL_ADDRESS LogicalAddress, _In_ BOOLEAN CacheEnabled ); 第三个参数有点不是很能理解,PPHYSICAL_ADDRESS Logical...
由此个人认为PPHYSICAL_ADDRESS LogicalAddress 这种定义只是微软命名习惯上的差异,这里的LogicalAddress就是物理地址而并非传统意义上的逻辑地址。
第三个参数有点不是很能理解,PPHYSICAL_ADDRESS LogicalAddress,至少从定义的变量名上看,微软似乎在暗示我:逻辑地址和物理地址是相同的这样一个事实。 虚拟地址到物理地址的转化方法是与体系结构相关的。有分段、分页两种方式。x86 cpu下分段分页都是支持的。MMU负责从虚拟地址到物理地址的转化。逻辑地址是段标识+段...
物理地址逻辑地址虚拟地址的概念(Physicaladdress,logicaladdress,virtualaddress)I.conceptPhysicaladdress(physical,address)Usedformemorycellleveladdressing,correspondingtotheaddressbusconnectedtotheprocessorandtheCPU.Thisconceptshouldbeoneofthebestunderstandingoftheconceptsof,butitisworthmentioningthat,althoughthephysicaladdr...
Logical Address: It Can be changed as you like,used for assigning a ip address to clients. Was this answer useful? Yes 1 Replykalyan raghavan Jan 23rd, 2006 A Physical address is a 48-bit flat address burned into the ROM of the NIC card which is a Layer1 device of the OSI mo...
A port address is an address assigned by the CPU (0-FFFF) that can be accessed for i/o read/write like RAM. Consider this analogy: Physical address - GPS coordinates: longitude / latitude; native assignment like MAC address (although this can be spoofed/changed)Logical address - Street ...
logical vs. physical Dictionary Thesaurus Medical Legal Financial High-level versus low-level. Logical implies a higher view than the physical. Users relate to data logically by data element name; however, the actual fields of data are physically located in sectors on a disk. For example, to ...
PURPOSE:To speed up address conversion by providing the logical address (LA)/physical address(PA) converter with a memory for storing the LA and PA of a defective boundary normal sector having a PA larger than the PA of a defective and most close to it. CONSTITUTION:The memory 15 stores ...
In ___, a table associating a logical address with a physical address is updated manually. A. static mapping B. dynamic mapping C. physical mapping D. none of the above 相关知识点: 试题来源: 解析 static mapping 反馈 收藏