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[Reprint] Memory literacy

the standard DIMM has enough space to accommodate the 9th chip, and the 9th chip is used to store 4bits or 8bits of ECC.If the 9 chips of the 1 ECC DIMMs are on the same side of the DIMM, they are called single-sided, and if 9 chips are distributed on both sides of the DIMM, they are called double-sided.DIMMs are also divided into Single-rank, Double-rank, Quad-rank (that is, 1R, 2R, and 4r,4r DIMMs that we often see on the lable of memory are typically used on the server).Each rank of Double-r

FPGA development All--ise basic operation

; (4) "Full-parallel", XST that the conditional statement is complete and does not have a branch inside, and does not use a latch and a priority encoder."RAM Extraction": Memory extension. This parameter is valid only for the FPGA and is used to enable and disable the RAM macro interface. The default is to allow the use of the RAM macro interface.Ram Style: The type of RAM implementation. This parameter is valid only for FPGAs and is used to choose whether to use block RAM or distributed RAM as

(Reporter) The always block omits the power circuit (SOC) represented by Else)

AbstractIn OpenGL, always block can be used to represent flip-flop, combination logic and latch. In this article, always block represents the power path without modifying else. IntroductionIn the C example, else is omitted, but it does not mean it is handled. However, else does not represent a different electrical path in the Tilde. Always@ (OrBOrEn)If(EN)C = A B; Else is omitted in combination logic ~ En retains the original value, so latch is generated. Always@ (Posedge CLK)If(EN)C It

The second stage of Self-writing processor (1) -- Design Process of programmable logical devices and PLD Circuits

based on the internal and or Array Logic, these devices are mostly made using the eeprom or flash process. configuration data is not lost after power loss, and the device size is generally less than 5000. 2. PLD Device Based on the structure of the query table (LUT: look-up table) The scale of the and or array-based PLD Device is not easy to be very large, so the designer developed another programmable logic device, that is, to find the table structure. It is similar to Rom. Its physical struct

Compilation and testing of ffmpeg in windows

must be unhappy and think that the quality is too poor, but this is also necessary.Compressing a high-definition P into a half-HD or SD is also a type of encoding method with a loss of quality.3. Basic Concepts literacy, Container (Container), Stream (Stream), Frame (Frame), Codec (Codec), mux/demux (multiplexing/demultiplexing ).A: A container is a file, and a container is a file format. For example, xxx. flv and yyy.mkv are two files. We can say th

Personal Firewall in Windows-Overview of network packet interception technology

through these devices. Therefore, we only need to develop a filter driver to intercept these interactive interfaces to intercept network data packets. The network data interception at the TDI layer can also obtain detailed information about processes that operate on network data packets, which is also an important feature of the personal firewall.NDIS middle layer driver. The middle layer driver is between the protocol layer driver and the small port driver. It can intercept all network packets

Analysis of various multimedia formats and Codec

formatThe multimedia container format is like the multi-media format we use. MP4 ,. 3GP ,. avi ,. ASF and so on are all multimedia container formats. They contain multiple encoding formats of video and audio. In multimedia, MUX and Demux are used to mix audio and video data (MUX) in the file format) and Demux In the decoding process ). Let's take a look at several container formats: 1. MP4A multimedia cont

Application 7 of VLC: Use VLC for unicast, multicast, and On-Demand Server

: // 127.0.0.1/vod1. You can play the video. You can replace 127.0.0.1 with your own IP address. 6. Set up multicast serversContinue input: New broadcast EnabledSetup inputs input D:/02.avi [loop]Setup export output # duplicate {DST = RTP {DST = 226.0.0.6, MUX = ts, Port = 1234 }}Control Role Play Explanation:A new broadcast is called broadcast. Set input to D:/02.avifor loop, which indicates loop playback. Set the output of the mul

How to configure the gpio of the feisikar imx6 Processor

In Linux or android systems, if we want to configure the gpio pin of the feisikar imx6 processor, for example, the gpio_19 pin, we should look like this: #define MX6Q_PAD_GPIO_19__GPIO_4_5\(_MX6Q_PAD_GPIO_19__GPIO_4_5 | MUX_PAD_CTRL(NO_PAD_CTRL)) _ Mx6q_pad_gpio_1920.gpio_4_5 is defined: #define _MX6Q_PAD_GPIO_19__GPIO_4_5\IOMUX_PAD(0x0624, 0x0254, 5, 0x0000, 0, 0) The iomux_pad macro is a key macro defining gpio. Its prototype is: #define IOMUX_PAD(_pad_ctrl_ofs, _mux_ctrl_ofs, _mux_mode, _s

One of dapm: overview

transparent to all user space applicationsAll power switching is done within the ASOC core. No code changes orRecompiling are required for user space applications. dapm makes powerSwitching decisions based upon any audio stream (capture/playback)Activity and Audio Mixer settings within the device. Dapm spans the whole machine. It covers power control within the entireAudio Subsystem, this includes des internal codec power blocks and MachineLevel Power Systems. There are 4 Power domains within d

Use package filtering technology to implement a personal firewall

examples: passthru and MUX. Developers can develop on the basis of passthru, while MUX implements VLAN functions. Currently, this technology is rarely used in Personal Firewall Products, mainly because the installation of the middle layer driver is too complex, especially in Windows NT. In Windows 2000, you can use a program to automatically install the driver. However, if the driver does not undergo a dig

Summary of questions and answers provided by Altera Forum

Link: http://group.ednchina.com/56/31122.aspx Summary of questions and answers provided by Altera Forum I can't afford losing any of these invaluable information anymore! It is not too late if I start reading and collecting them from now on. I will look the threads through everyday as I do with my Hotmail e-mails and eetimes rsss. It's all about timing: Sun Nov 01 2009 17:17:32 GMT + 0800 signal transfer in different clock domainsSun Nov 01 2009 16:53:26 GMT + 0800 implementation an

Error problem of QEMU-KVM Bridge network in Linux

the lack of IFF_VNET_HDR support an error conditionUse ' vhostfd=h ' to connect to a already opened Vhost net deviceUse ' vhostfds=x:y:...:z to connect to multiple already opened Vhost NET devices-net Bridge[,vlan=n][,name=str][,br=bridge][,helper=helper]Connects a host TAP network interface to a host bridge device ' BR '-net Socket[,vlan=n][,name=str][,fd=h][,listen=[host]:p Ort][,connect=host:port]-net Socket[,vlan=n][,name=str][,fd=h][,mcast=maddr:port[,localaddr=addr]]-net Socket[,vlan=n][,

JAVA's object-oriented design features-post-book Sense-01-21-day learning java-in-depth analysis

;} Static methods cannot be overridden for example 2static public int mux (int i, int j) {return i * j;} The static method cannot override the example 3public int div (int i, int j) {return i/j;}} public class Chapter8_math extends math{public int add (int i, int j) {return i;} static public int sub (int i, int j) {return J;} Static methods cannot be overridden for example 2 "case 0"/* Such compile error public int

Gold segmentation in Golden apple design

The source of this article Baidu Mux, since the Golden Section theory, has been applied to countless industrial design, graphic design level, this article will be an example of the design of Apple brick, to see how 0.618 is embedded into our daily life: You study or not study, beauty is there, not biased, you find or do not find, the Golden section is there, not many. Know him, find beauty, also give oneself add wonderful, good works will not have no

ALSA sound card driver dapm in one of the detailed: Kcontrol

one important concept in ASOC: Kcontrol, unfamiliar readers need to browse through my previous article: Linux ALSA sound card driver Four: control device creation. Typically, a kcontrol represents a mixer (mixer), or a MUX (multi-channel switch), or a volume controller, and so on. As we know from the above article, defining a kcontrol is primarily about defining a snd_kcontrol_new structure, which, for the sake of discussion, is again given its defin

Google depth of TPU: A article to understand the internal principles, and why the rolling GPU

integers rather than floating-point computations greatly reduces the hardware size and power consumption of TPU. A TPU clock contains 65,536 8-bit integer multipliers. A mainstream GPU used in a cloud environment, typically consisting of thousands of 32-bit floating-point multipliers. As long as the 8-bit to meet the accuracy requirements, can bring more than 25 times times the performance improvement. Risc,cisc and TPU instruction set Programmability is another important design goal for TPU. T

FFmpeg Basic Usage

the problem to be solved in this lesson What is the 1.FFmpeg transcoding process?2. What do the common video formats contain?3. How to extract the content from the video file.4. How to convert from one format to another format.5. How to zoom in and out of the video.6. How to rotate, flip, fill, crop, blur, sharpen video.7. How to add logo to the video, delete the logo.8. How to add text to the video, dynamic text.9. How to handle the picture.10. How to record, add dynamic logo, screenshots, mos

Analysis of timestamp in FFMPEG Stream Transcoding by FFMPEG-0.11.1

CODEC_CAP_DELAY)) pkt.pts = ost->sync_opts; if (pkt.pts != AV_NOPTS_VALUE) pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base); if (pkt.dts != AV_NOPTS_VALUE) pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base); Next I will not talk about it. I will directly send it to MUX and then write it to the remote end. __________________________________________

FFmpeg structure of FFMPEG-0.11.1 analysis (simple) and Code flow (mainly involved in the preparation of the previous part)

. avinputformat. avstream. avcodeccontext. avcodec * codec and avformatcontext.Avoutputformat. avstream. avcodeccontext. avcodec * codec variable. 8. There are several important structures, or variables: Static inputfile ** input_files and static outputfile ** output_files. The output struct avinputformat * iformat; struct avoutputformat * oformat; Is In avformatcontext, for an avformatcontext context, Demux and MUX cannot exist at the same time (notb

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