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One engineer's nine comments on the FPGA Project

to reuse them after a long time. In fact, when a problem occurs, you can observe the existing debug-pin orIt is enough to find the root cause of the problem, without the need to introduce a new pin, and waste time merging and Par. 5. The timing of simulation is sufficient. With the design principle of clock synchronization, the functions of digital circuits can be verified through simulation. Simulation results and FPGA-Image is equivalent. Of course

Design of FIR Filter Extraction Based on FPGA

Abstract: This paper introduces the working principle of the FIR extraction filter, focuses on the method of using xc2v1000 to implement the FIR extraction filter, and gives the simulation waveform and design features.Key words: FIR Filter extraction; pipeline operation; FPGA It is complicated to use FPGA to implement the extraction filter, mainly because FPGA la

Implementation of corrosion expansion algorithm based on FPGA

, that is, the operation of a 3x3 pixel:P = P11 | | P12 | | P13 | | P21 | | P22 | | P23 | | P31 | | P32 | | P33In HDL, in order to change the speed through the area, we will change the type as follows:P1 = P11 | | P12 | | P13P2 = P21 | | P22 | | P23P3 = P31 | | P32 | | P33P = P1 | | P2 | | P3, that is, the results of corrosion operations can be achieved by the operation of 2 clocks/stepsSimulation of expansion operationThe above simulation is my previous simulation with Modelsim, here is not rep

Research on rc6 algorithm implemented by FPGA

Research on RC6 algorithm implemented by FPGA [Date: 2008-10-29] Source: single-chip microcomputer and Embedded System Application Author: Beijing Institute of Electronic Science and Technology Wu Yuhua Li Ligao xiwei YAN Shi ding [Font:Large Medium Small]   Introduction RC6 is a new group password submitted to NIST (US National Institute of Standards) as a candidate Algorithm for AES (Advanced Encryption Standard. It is designed

[Serialization] An example of FPGA-based HDL series-DC motor PWM control

[Serialization] FPGA OpenGL series instances DC motor PWM Control Based on OpenGL I. Prerequisites In the previous article, I summarized the control of the stepper motor. This time I will learn about the control of the DC motor. First, we will briefly understand the difference between the stepper motor and the DC motor. (1) step-by-step movement of stepper motors, DC motors usually adopt continuous movement control. (2) The stepping motor adopts direc

Logical replication in FPGA

Logical replication is often used in FPGA design.1. The signal-driven series is very large, fan-out is very large, and the driving force needs to be increased Adjust the fan-out of the signal when logical replication is most commonly used. If a signal needs to drive many units in the back-level, the fan output of the signal is very large, one way to increase the drive capability of the signal is to insert a multi-level buffer, however, although this c

[Original] [serialization]. Simple Digital Photo Frame Based on FPGA-nioii SBTE part (software part)-SD card (SPI mode) Driver

Document directory Step 1 Add the sd_card folder to the APP project path Step 2 write code Step 3 call the SD card driver Function In the previous section, we completed the configuration of the niosii SBTE. The following describes how to compile an SD card Driver Based on existing references (manual and code.Prepare tools and materials 1. WinHex 2. Efronc's blog post SD/MMC interface and power-on sequence, SD/MMC internal registers, and command set in SD/mmc spi ModeStep 1: add the sd_car

Summary of FPGA pin allocation considerations

1. Flow of signals carried by FPGA at the board level. Generally, the strip of a Board follows the signal stream. from one side to the other side, it may be bent, but it will not return. FPGA pins are allocated. This principle should also be followed to avoid wiring, such as crossover and surround. 2. FPGA internal bank. Be familiar with the internal distri

[Serialization] [FPGA black gold Development Board] Those things of OpenGL-low-level modeling resources (6)

modeling of "functional modules. The modeling method complies with the "One module, one function" principle, and adds the description of "graphics" and "Connections" in the most direct way, it improves the "solution" of the "completion module" and the "possibility" of the design ". Of course, the benefits of "low-level modeling" are more than just here. As the modeling engineering degree increases, the advantages of "low-level modeling" will become more and more prominent. Experiment 3 Config

FPGA drive AD9854 major bug-resolved!

speechless. Is it really a problem with the software version? Students told me that the only difference between a program and a program is whether an error occurs during pin configuration. However, I have checked it many times, and the configuration is correct. But at this time, I found something strange. When you carefully observe the pin planner interface, you can see two options: voltage and current. Pull to option 1. voltage is 3.3 V by default, which is normal. The current option seems to

Counters of FPGA design skills

//////////////////////////////////////// ////////////////// /************ 50000000 = 500*100*1000 ******************/ Always @ (posedge clk_50m) begin If (! Rst_n | cnt1k = 10 'd499) cnt1k Else if (clk_1k) cnt1k Else cnt1k End Always @ (posedge clk_50m) begin If (! Rst_n) clk_1hz Else if (cnt1k = 10 'd249 clk_1k) clk_1hz Else clk_1hz End 2. Data Path Selection In some system designs, you often need to select a data path and determine its validity. The following describes how to use a f

(Original) How can we determine the invalid parameter information of the "leaving target processor paused" of the niosii? (IC design) (Quartus II) (FPGA builder) (Ni

zookeeper messages of Quartus II and niosii are vague, it is entirely necessary to rely on the "economic" and the "economic" without making any mistakes. See also (originally known) How can we determine the semi-complete information of the timestamp of the niosii that does not match? (IC design) (de2) (nio ii) (SOPC us II) (FPGA builder) (formerly known) de2_nios_lite 1.0 (SOC) (de2) (original topology) How can we determine the distributed agg

[Serialization] [FPGA black gold Development Board] niosii-External interruption Experiment (V)

. I have already discussed this part in detail. I 'd like to explain it briefly here. Open the Quartus II software, and double-click the kernel to go To the FPGA builder. After entering, we will create a PIO module, and there is a difference in the creation process. Let's take a look, as shown in, at Red Circle 1, we enter 1, because we only need one button (five buttons in the black gold Development Board), and input ports only is selected for the

(Reporter) Naming Convention for avron signal type (SOC) built by Quartus II 8.1 (FPGA builder) (Quartus II)

AbstractIn Quartus II 8.1, Quartus II handbook version 8.1 Vol.4 has made some changes to the nameing Convention of aveon signal type. IntroductionUse environment: US us II 8.1 In Quartus II handbook version 8.1 Vol.4 p.6-4, Altera announced the latest naming convention. The overall change is not significant. It is worth noting that the change of the conductor interface is only one, rather than the original one. I think this change is reasonable, in the past, I had never understood the diff

Summary of FPGA technical practices

De2 calendar year code BytesGlobal user instance Http://www.terasic.com.cn/cgi-bin/page/archive.pl? Language = China categoryno = NO = 330 partno = 2 Blog of other Daniel Http://blog.ednchina.com/riple/47380/message.aspx Http://www.cnblogs.com/oomusou/archive/2008/08/11/verilog_edge_detection_circuit.html Altera began to like cookbook. Advanced synthesis cookbook: A Design Guide for Stratix II, Stratix III, and Stratix IV devices May 2007 An 470: Best practices for incremental compi

(Original signature) How can we determine the exact interval between the timestamp of the niosii and the unmatched timestamp? (IC design) (de2) (nio ii) (Quartus II) (FPGA builder)

. Sof file you used is the same as the. Sof file used by the niosii software. Especially if you use Quartus II web edition, _ time_limited.sof will be generated, not the original project name. sof, but because the PTF corresponds to _ time_limited.sof, it is possible to abort without caution. sof.If it fails, skip step 2. Step 2:Import de2_nios.sof of de2 reference design into de2, use Hello World project template, and then import. Sof of your project. I do not know the reason for the license

"RapidIO-related" DSP and FPGA communication

TI Reference Links:http://www.ti.com.cn/general/cn/docs/gencontent.tsp?contentId=50741----------------------------------------------------------------------------Note Swrite: Stream Write, the data length must be an integer multiple of 8 bytes and does not require a receive-side response. Swrite is the most efficient transmission format, with a lower efficiency for write or read operations with response, and generally only half the efficiency of a non-responsive transmission. -----------

Realization of FPGA Rotary ENCODER

rotary_right;Assign Rotary_left_pos =!rotary_left_reg rotary_left;//ShakeAssign rotary_event = Rotary_right_pos | | rotary_left_pos;//rotation flag bit[Email protected] (Posedge Clk,negedge rst_n) beginif (!rst_n)Shift_d else if (rotary_event) beginif (Rotary_right_pos)Shift_d if (Rotary_left_pos)Shift_d EndEndAssign LED = left-to-right test module for shift_d;//lampEndmodulePrinciple, you can refer to the http://www.eeboard.com/bbs/forum.php?mod=viewthreadtid=45184highlight=%E5%B0%8F%E8%84 o

Original [FPGA] Odd division of clock divider (5-way)

Use two count modules to count each, get two waveforms for basic and or complete operation. Directly post the code section below.1 ModuleDiv_freq (2 ICLK,3 Irst_n,4 OCLK5 );6 7 input WireICLK;8 input WireIrst_n;9 OutputOCLK;Ten One parameterN =4'd5; A - Regclk_p; - Reg[3:0] cnt_p; the always@ (PosedgeIclkor NegedgeIrst_n)begin - if(!irst_n) -Cnt_p 4'D0; - Else if(cnt_p = = N-1) +Cnt_p 4'D0; - Else +Cnt_p 1'B1; A End at always@ (PosedgeIclkor NegedgeIrst_n)begin - if(

"FPGA" "Verilog Code" binary to BCD [go]

Bcd:binary Coded Decimal is a 4-bit binary encoding that represents a 1-bit decimal number.Definition: BCD code This encoding form uses four bits to store a decimal digit, making the conversion between binary and decimal fast. This coding technique is most commonly used in the design of accounting systems, because the accounting system often requires accurate calculations of long numbers of strings. Relative to the general floating-point notation, the use of BCD code, both to preserve the accura

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