ryzen processor

Mutex is a multi-processor. Program The most common collaboration method in design. We put a resource into the critical section: A single point of time can only be executed by one thread. This feature is called mutex. The standard method for implementing mutex is to use an ilock object with the following interfaces. Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Public Interface Ilock{ Voi

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[Disclaimer: All Rights Reserved. You are welcome to reprint it. Do not use it for commercial purposes. Contact Email: feixiaoxing @ 163.com] Before I started working in a chip company, I knew very little about the chip design. I knew a lot about the chip company datasheet. There is no such resource, and there is no such requirement. However, when I came to a new company, especially after I realized the open-source CPU, everything had changed. Open-source CPU-based code, open-source code compil

Author: Tian kaiwenDate: 2011-6-6 14:59:16PS: I will summarize it for future reference. If it is reproduced, please indicate the sourceQQ: 1324343063 Recently, we have analyzed the cpu_init.s of 6410 in uboot. This is the configuration of DDR. Because DDR is an update of SDRAM, we will first look at the SDRAM. The following is a recent summary. See: This is 64 m (32 m + 32 m), the principle of SDRAM 1. Why does the address line 2440 or 2410 start to be connected from addr2? The address line

A foreign hacker named Dmitry grberger tried to create an eight-bit simple computer micro-control device and run Linux on it. He wrote an ARM Simulator: Two hours after the startup, he saw the command line prompt (init =/bin/bash). Four hours later, he saw the Ubuntu logon page. After logging on, the system is still available to some extent. after entering a command, you can see the response within one minute. Generally, Linux does not run on systems with less than 32 bits. Therefore, grbe

The ultimate goal is to design a CPU with a sequential nature.The CPU reschedules the computing phase, moves PC computing to the fetch phase, and obtains SEQ +CPU. SEQ +:Reschedule the computing phase ---- Re-adjust the activity of the update PC phase at the beginning of a clock cycle so that it can calculate the PC value of the current command. This is the difference between SEQ and SEQ + PC computing. In SEQ +, to calculate the current PC, you need to use registers to save the signals ge

Dynamically concatenate SQL statements in the project and use union all to connect the result set. Each query statement uses in (hundreds of values ). Statement: Select aa from T1 WHERE aa IN (1, 2, 3, 4 ..............................) union allselect aa from T2 WHERE aa IN (1, 2, 3, 4 ..............................) When there are many in and union all operations, an exception occurs.The query processor has exhausted internal resources and cannot g

commands, variable instruction lengths, and multiple addressing methods. These are also the disadvantages of CISC, because they greatly increase the difficulty of decoding, however, with the current high-speed hardware development, the speed improvement caused by complex commands is far less than a waste of time on decoding. In addition to the x86 instruction sets used in the personal PC market, CISC is no longer needed for servers and larger systems. The reason why x86 still exists is to be co

mutex Based on the default attributePthread_mutex_lock ( mutex); // lock the mutex variable... // Critical resourcePhtread_mutex_unlock ( mutex); // unlock the mutex variable Synchronization means that the thread waits for an event. The thread continues to execute only when the waiting event occurs. Otherwise, the thread suspends and discards the processor. When multiple threads collaborate, the interaction tasks must be synchronized under certain co

It is easy to think of two points, the problem is with the feasibility of judging a solution. Greedy, up to 20,000 points in time, you can simulate each point in time, sort events by start time,Each time you prioritize a task that has already started and the earliest end time, if a task does not end before deadline, it is not feasible to indicate the current solution.The upper bounds of R are not well estimated, (far from the sum, but larger than MAXW, because the task overlaps in time), slightl

When Xcode compiler prompts undefined symbol for architecture x86_64, the current framework does not support 64-bit systems, and to use the framework, only the project settings need to be modified.Open the Build Settings, select the Architecture tab, and follow the image settings below: Add _32_bit after Archs_standardCopyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.(83) Third-party class libraries do not support 64-bit

The NAND boot steps:The Sector Media boot steps:(Sector Media devices include SD, SDHC, MMC and Movinand)1.A2S/A2M 硬件启动程序boot-strap在片上ROM。2.boot-strapper初始化sector media devices(上电启动配置选中的设备)3.boot-strapper从sector media中读取DRAM配置，初始化DDR2控制器及DRAM设备。4.boot-strapper从sector media 的 sector1读取配置，并加载boot-loader到DRAM，最后将PC置到boot-loader。5.boot-loader初始化MMU及分页表。6.boot-loader从sector media主分区中读取 RTOS/APP raw image至DRAM，并解压的最终地址（DRAM）。7.boot-loader从sector media的DSP分区中 读取并解压 DSP微程序。8.boot-lodaer跳入 RTOS/APP 代码并完成

Synchronization transformation can be interrupted to initiate a synchronous conversion of the injected group.(8) Mixed synchronization rule + alternating trigger mode: The Rule Group Synchronization transformation can be interrupted to initiate an injection group alternating trigger transformation. Shows a rule that the synchronous transition is interrupted by an alternating trigger.(9) Mixed synchronous injection + Crossover mode: An injection event can interrupt a cross-conversion. Such a cas

as forks = 2 * MAX (guests + 3, last);Use capital letters for macro function names. This convention was not as widespread as the using capitals for macro constants. However, one good reason for using capitals are to remind yourself to being alert to possible macro side effects.If you intend to use a macro instead of a function primarily-to-speed-a program, first-try to determine-whether it is Likely to make a significant difference.A macro That's used once in a program probably won ' t make any

Displays the line number, which, when set, displays the line number of the row in the prefix of each row: Set Nonu is the opposite of Set Nu, the line number is canceled! Block Selection (Visual block)Key meanings of block selectionV character selection, the cursor will pass through the place of the white selection!V-line selection, the line of the cursor will be reversed white selection![Ctrl]+v block selection, you can select the data in a rectangular wayY Copy the anti-white place.D Remove

Topic Link: Click to open the linkOther than Integer, string, and so on, the other (that is, the object) is a reference. (is the address, want the same effect as C to create a new object)Import Java.io.printwriter;import java.util.arraylist;import Java.util.arrays;import Java.util.Collections;import Java.util.comparator;import Java.util.iterator;import Java.util.priorityqueue;import Java.util.Scanner;import Java.util.treeset;import Java.util.queue;public class Main {public class Node implements

A Lenovo lj2500 laser printer in my office suddenly experienced a power failure when printing files. After a call, the printer switch was turned on, the "toner cartridges", "Ready lights", "warning lights", and "Data lights" on the printer control panel are constantly flashing, And the toner cartridges cannot be preheated after normal boot. According to the fault symptom reference provided in the printer user manual, this error indicates that the printer pro