How does a primary memory interact with a CPU?
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There are 4 steps of excuting every command in computer. Fetch , Decode , Excute , Store . In first step binary codes come to CPU from Ram.It's just one of them.If you want to know more it's my Id: amirhesam_kh@yahoo.com i can help you more.
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http://en.wikipedia.org/wiki/Virtual_memory\nVirtual memory or virtual memory addressing is a memory management technique, used by multitasking computer operating systems wherein non-contiguous memory is presented to a software application (aka process) as contiguous memory. The contiguous memory is referred to as the virtual address space.\n\nVirtual memory addressing is typically used in paged memory systems. This in turn is often combined with memory swapping, whereby memory pages stored in primary storage are written to secondary storage, thus freeing faster primary storage for other processes to use.\n\nThe term "virtual memory" is often confused with "memory swapping" (or "page/swap file" use), probably due in part to the Microsoft Windows family of operating systems referring to the enabling/disabling of memory swapping as virtual memory. In fact, Windows uses paged memory and virtual memory addressing, even if the so called "virtual memory" is disabled.\n\nIn technical terms, virtual memory allows software to run in a memory address space whose size and addressing are not necessarily tied to the computer's physical memory. To properly implement virtual memory the CPU (or a device attached to it) must provide a way for the operating system to map virtual memory to physical memory and for it to detect when an address is required that does not currently relate to main memory so that the needed data can be swapped in. While it would certainly be possible to provide virtual memory without the CPU's assistance it would essentially require emulating a CPU that did provide the needed features.\n--x--\nIt can sometimes help to increase it.
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Imagine a block of memory from 0 to N. A cyclic buffer fills from 0 towards N, and when it reaches N it starts back at 0 again.\nThis kind of buffer needs to be "serviced" (have the data removed) before new data overwrites data that hasn't been removed yet.\nThere is normally an "in" pointer for incoming data, and an "out" pointer for outgoing data, If the "out" pointer reaches the "in" pointer, the buffer is empty again. If the "in" pointer reaches the "out" pointer, you've overflowed the cyclic buffer!
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Use CPU-Z to see all the information about the processor (and not only). It's freeware
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Nothing.\n\nA multiprocessor system IS a multi-tasking operating system.\n\nBut a multi-tasking system isn't always a multi-processor system.
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www.crucial.com\nsome of the memory may be diverted over for video memory.  There may be a setting in the BIOS.
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If you are asking about RAM memory, it depends on what your BIOS (Basic Input/Output System) specifies (oversimplified: it's how much memory your computer will recognize).  If you are asking about hard drive memory (which is entirely different from RAM memory), that is limited only by the number of physical drives you have and how large each drive is.  There are many more types of memory that your computer uses. If you are interested, visit the link I've provided.
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Virtual Memory System.
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"register" declares a variable to be stored in a CPU register rather than RAM.\n\nIt is a hangover from the olden days when the memory CPU bus interface was slow by todays standards. It allowed for faster execution by storing a variable directly into a CPU register instead of RAM eliminating the data fetch execute cycle associated with decoding the address of the data and moving the data in and out of a CPU  register.\n\nThis type is more or less defunct in modern C programming. One of the mostly widely used compilers Microsofts Visual C++ no longer implements this, although it still supports the declaration for backward compatibility. \n\nIn fact when it sees a register variable it just converts it into a normal variable store in RAM. In MS Visual C++ you can even use & on a register variable to get its address which you shouldn't be able to do in ANSI C as an internal CPU register has no address! \n\nModern compilers like Visual C++  automatically use CPU registers if the relevant optimisation is turned on in the compiler flags. Therfore there is no longer any requirements for the programmer to implement low level optimisation using register variables. You could use any alternate data type that suits your needs. e.g. (short) int, long
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You know this topic is too extensive to cover here. \n\nThere is some good reference material covering both types of processors here: http://ourworld.compuserve.com/homepages/r_harvey/doc_cpu.htm \n\nIn Pentium class processors, there also model-specific registers  http://ourworld.compuserve.com/homepages/r_harvey/doc_cpu.htm
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A processor is made up of hardware. In it, it has a program to control this hardware.\n\nAs a processor whole it controls the other software program
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it is a feature of the x86 series of the processors that allows upto 64GB of physical memory compatible to the 32bit processor based computers. provided there is a compatible operating system support. it is supported by most of the intel and AMD processors, there is an assinment of a CPU-ID flag for the purpose of the identification of the processors supporting the feature.
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You are going to need to provide more information about your question.  I don't believe anyone is going to have enough context to answer it.  Where are you seeing "PROCESSOR_LEVEL=15"?  What type of mapping is going on?  \n\nSorry I can't answer your question, but at least I can let you know that you're not being ignored.
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Do you mean cache memory?\nCache is a special static memory built inside the processor. Typically there are two kind of cache, first is L1 cache that is located inside the CPU chip. This cache is very fast, providing space for storing instructions for the CPU to execute. Usually it is 32Kb to 64Kb in size.\nThe second one is L2 cache that is located outside the CPU chip but still in the processor area. This act as the secondary cache supplying L1 cache with more instructions. This type is larger in size ranging from 256Kb to 2Mb.\nRegister is an internal circuit in CPU built to store instructions, address, temporary results and operands. When processing an instruction, a CPU needs space to store information that is needed to perform calculation of the instruction like operands, jump address, modulus etc. This is where registers are used. The size of a register is very small, about 16bits to 64bits. A CPU can have many register, usually 16 to 32 registers.
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Cache memory is placed between the processor and the main memory. To increase the efficiency of ur computer.
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http://computer.howstuffworks.com/ram.htm
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Two threads can share a common address-space(memory area in RAM).\nBut 2 process NEVER share address space. Each process has different address space.