3ddr ram

1. Starting from the ibm pc xt architecture... In the initial PC design, CPU, ram, and I/O are connected by a bus, and all components must work in the synchronous mode, the CPU determines the frequency at which other devices operate. This will bring about a locked to each other effect, that is, everyone is limited to a universal clock frequency (clock frequency) that all devices can withstand, the overall performance of the system is not high. 2. Th

This article Reprinted from http://chenyq2008.spaces.live.com/blog/Both are file system drivers. Can read the ROM file system. The difference is: in addition to being able to read ROM disks, the former also constructs a ramdisk. (Because file system is very confusing, I call it ROM disk and ramdisk ).This article Reprinted from http://chenyq2008.spaces.live.com/blog/What does ramdisk mean? Is a virtual disk in the ram space. Let's talk a little bit of

In a recent project, I learned about the external Ram Extension of the AVR microcontroller, which is recorded here. In this paper, we use a single-chip microcomputer with a single-chip microcomputer as the testing platform and expanded 74hc573 (AHC series are used in the data section. However, I used the HC series to configure the fastest access speed under the 16 m crystal oscillator and did not find anything wrong, of course this is not a rigorous d

The idea is to first obtain the file type and select different webpage player codes according to the type .. 3, 5, go, 2 ..... at the same time, in order to reuse the code in the future, a general call function is written. facilitate future calls in other systems .. The source code is as follows: Copy codeThe Code is as follows: Sub SelPlay (strUrl, strWidth, StrHeight) Dim Exts, isExt If strUrl IsExt = LCase (Mid (strUrl, limit Rev (strUrl, ".") + 1 )) Else IsExt = "" End If Exts = "avi, wmv, a

The assembler code primarily initializes some registers, shuts down the dog, initializes the clock, initializes the storage Manager to access the memory, and then copies the 4k RAM data on the SOC to the SDRAM, then runs inside the SRAM, and then uses Jlinkexe to debug because the code does not run properly. Jlinkexe Specifies a command file: jlinkexe-commandfile./cmd.jlink , the Cmd.jlink file contains the following:1 R 2 0x0 3 0x0 a S 4 0x0A problem

The following error occurred at compile time after recently using 2-port RAM in the Quartus II 9.0sp2 Web Edition selection ep2c5q208c8n chip compilation project:ERROR:M4K memory block WYSIWYG primitive "Vram8k:vram8k_inst|altsyncram:altsyncram_componen t|altsyncram_3s62:auto_ Generated|ram_block1a0 "utilizes the Dual-port dual-clock mode. However, this mode isn't supported in Cyclone II device family in this version fo QuartusWorkaround:1.Open the pr

DVD-RAM off disk formatting failed. . disable the CD copy function of Windows XP, and then format or INCD format. b. use the Nero software for formatting. c. update the DVD-RAM driver Program . after the installation is complete, go to the following URL to download the latest update: http://www.bhacorp.com/download/utilities/dvdram.html ultra video Joiner ultra video joiner is a tool that helps you c

Android Studio startup AVD simulator exception: cannot set up guest memory #39; pc. ram #39;An error occurred while starting the AVD simulator: Cannot set up guest memory 'pc. ram' error message: HAX is working and emulator runs in fast virt modeCannot set up guest memory 'pc.ram': Invalid argumentError accepting connectAnalysis If you have not found the same problem on the Internet, you can find a simila

RAM: Run-time memory. Equivalent to the memory storage of the PC, used to store various objects and variable constants when the application runs, the main role is to improve the speed of operation. Is the only memory that the data clears after a power outage.Body Memory: Equivalent to PC hard drive. It consists of three areas: ROM, internal memory and external memory.ROM: Read-only memory. This section of the file can only be read, non-erasable, such

We introduce a very interesting software RAM disk, it can turn memory into a hard disk to use, is always relatively advanced use methods. Of course, the capacity of the hard disk is much larger than memory, why should the memory when the hard disk use it? This is because the memory read and write speed, is hard drive read and write speed of more than 10 times times. If we set the browser's cache Temp folder to memory, it can effectively improve the b

　　The Action that can authorize an ECS resource in RAM In RAM, an ECS resource can be authorized to perform the following Action. Allocatepublicipaddress Attachdisk Authorizesecuritygroup Createdisk CreateImage CreateInstance Createsecuritygroup CreateSnapshot Deletedisk DeleteImage Deleteinstance Deletesecuritygroup Deletesnapshot Describeautosnapshotpolicy Describedisks Describeimages De

　　Authorized ECS resource types in RAM Currently, the types of resources that you can authorize in RAM and how they are described are shown in the following table: Resource description in the Resource type authorization policy instance acs:ecs: $regionid: $accountid: instance/$instanceid acs:ecs:$ RegionID: $accountid: instance/* acs:ecs:*: $accountid: instance/*

Using Microsoft's ReadyBoost technology, we can increase the main memory of our computer, flash memory (USB memory) into virtual main memory. This feature is available in Windows Vista and Windows 7. Using this feature, we can speed up our computer with the help of additional virtual main memory. We can not use ReadyBoost with all kinds of USB memory on our computer. It should meet some minimum requirements to make ReadyBoost technology. System requires USB memory to be used as virtual system

Tags: another error prompt maximum NFA Add errors use Create fieldMONGO in the use of the process encountered a problem, the need is to MONGO library query to the data paging, MONGO library we know that will store large volumes of data, if there is more data in the library, this will be reported a query failed with error code, and ER ROR message ' Executor error during find Command:OperationFailed:Sort operation used more than the maximum 33554432 bytes of R