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can you correct my code... i dont how to use switch with the clock. so that when i on the swicth the clock start j is start counting. plez help me. module counter( output reg keluar, input clk, input switch, ); // reg result = 6'b000000; reg en = 1'b0; reg i = 0; integer j= 0; always @ ( posedge clk) begin
Hi,I need a verilog code for a banyan switch... if there are two inputs say x1 and x2 and two outputs say y1 and y2 there is a select line s for s=0 i must send the data through upper port for s=1 i must send data through lower port.
I have an issue with trying to figure out how to implement a simple switch (as in OPEN or CLOSE circuit) in verilog. Some background: I have a device that takes user button presses (mostly a capacitive switch) and I have a design that will automatically "press buttons" given certain conditions. The plan I have is to make a small module (...)
Hi, im new in verilog coding, i need help for the 2-line LCD display in Altera DE2 board I want to write a coding when switch 1 on, it will change the text in display and address value, and for the switch 2 I have compiled the coding and found some error, so someone help me solve the problem? always @(posedge CLOCK_50 or negedge SW)
Hi ho, I have ap roblem with a entlist and DC 2001.8 under linux. In the netlist, there are a few verilog statements with the keywords pullup and pulldown ( i,e, pullup (zero) ). So, my DC cannot read in this. "pullup not supported by synthesis" or "error at or near token pullup" ( only one instantiated module with the name pullup. i.e
hi,anybody knows how to open the switch of macro defination in ise4.x/5.x series software,i use xst to synthesis the verilog code,because my codes have some ifdef...else ...endif,but ise seems like not to support this kind of defination?is it right?any solutions?thanks
hi, what option/switch must be turned on/off to sign-off asic if use verilog-xl and nc-verilog? thanks
run ncsim with -compatibility switch. if it works, then it is like joe2moon said.
Who can recommendate best SW for ATM-switch simulation (Internal Structure)
Good time to switch to VHDL and use the generate statement. Just kidding, so no flames or starting of a religious war between VHDL and verilog, okay? I think what a lot of folks do is run a pre-processor, like a perl script, on their verilog code to handle things like this. I mainly use VHDL but I worked at a verilog (...)
Hi! The problem was solved fortunatly. Error - wrong switch in my script was the main problem. :? bart
Dear people, I would like your help in a problem that troubles me a lot. I am using Cadence ICFB with technology files of TSMC_0.13 I have sucesfully run Synopsis and produced a synthesized verilog output. Then I went to Cadence and imported the verilog file (with reference library TSMC013) and created a schematic view. note th
Need VHDL TDM switch example I find verilog code ( ) , but I`m need VHDL. Could anybody share this, or TDM switch tutorial or good Internet resources for this topic, please?
anybody tell me how to develop behavior model for switch-cap block? which language and which simulator to use?
One side of the switch, if left unconnected can give rise to convergence problems. Also two nodes that are being inadvertently shorted out can create a problem. It is difficult to answer without more information. Use a voltage variable resistor as a non-ideal switch and configure very high res for open state and very low res for closed state
hi , I wanna write signals to a file using $fdisplay in verilog testbench ,and how can i decide which line to write? that is ,is there any pointer like that in C that I can switch between the lines in the file being writen? (after each $fdisplay , the file will automatically switch to another line, how can i switch back to (...)
i want to implement an ethernet switch on the fpga i want to use spartan 3 board it got 200 000 gate would that be enough??
hi verilog is easy to start for hdl. once u learn u can easily switch to vhdl.
hi in such case I put bits (for every switchs state)in a byte and then i use switch-case command. switch(keys){ case 0:break; case 1:..... }
Hi pavanP, I think the user manual in the install direcory can help you all the switch of NCver1log. And that is good than everyone else.
if my verilog code contains `resetall which from the documentation said it will reset to the default compiler directive value of vcs What is default value for VCS? where can i get the default value? `uselib (without any arguments) what does it do? Does it swith off the previous `uselib in your design? What does it mean by switch off?
You already know VHDL so it'll be so simple to start in verilog, since it's much easier than VHDL. verilog is similar to C, so if you have a background on C then life would be rose :D. Some of the "features" of VHDL are dropped out in verilog, and that's what makes verilog much simpler! There are tons of books here in the (...)
Hello everyone. I am trying to cause an LED to have a delayed (1 second delay) on / off response to a switch which is being toggled. How do I go about creating this delay using VHDL? I am currently using the Spartan3a development board. I was thinking of using a 'for loop' to cause the delay, but I am not sure if this is the proper or best wa
hi, i have a doubt realted to switch level modeling in verilog. can the switches called nmos pmos, cmos, tran, tranif0, tranif1 be also used for analog signals.i mean can we give an analog input at the source or drain of these switches and expect an output depending on the control signal which is a digital signal. (...)
As banjo described, the pmos and nmos switches are generally not supported in FPGAs or FPGA tools. However, the ModelSim simulator supports them fine.
Hi everyone I was wondering if there was a way to model a floating node in verilog-a. I was actually working on a simple model for a switch (including its on-resistance). What is wish to do is to 'float' the output node when the switch is off... Cheers Nihit
modelsim does support systemverilog, try to use the switch "sv" along with vlog to compile systemverilog files. e.g : vlog -sv
Hi, I need help designing a circuit with verilog to output a picture onto the screen. I know how to do this with one picture, but I don't know how to do it with multiple pictures. The objective is to show a picture at a time, which is switched according to user input. I think I could do the FSM but I'm getting frustrated since I cannot use ou
There is something wrong with the spectre5141. After switch to spectre5033, the problem disappears.
Hi, I am trying to simulate a 10 bit 80Ms/s pipeline adc using verilog A models for switch and amplifier, but when i extract the output codes and plot fft i get only around 30 dB. The output codes are fine as i checked them using a ramp test and have no missing codes. I have tried this for different input frequencies and different sampling
Check out for SV and vmm complete simple switch example. If you are interested in developing a environemt for any other protocol, Go to and verify any rtl. If you found any buy in the rtl, send the bug details to .
You have to interface multiple ethernet PHYs with your FPGA, you have to define the intended switch operation (switching on which ethernet layer), you can possibly reuse existing ethernet MAC (and if applicable, IP layer) designs and add the switching logic. can you provide me some details of design like what are th
For starters, add "veriloga" to both your switch-view and stop-view list. If you find you need to assert netlisting targets on master- by-master basis, you may have to create a config view with the Hierarchy Editor to get that control. Otherwise the switch-view priority will be in the order that the view types appear in those lists (...)
Hi, How to scan the rotary switch using verilog. I'm new to verilog and FPGA, I've to look for the rotary switch movement and have to increment the data. when i turn the rotary switch it makes FPGA pins to get contact with GND. So in the user guide it has mentioned that we need to pullup the FPGA pin (...)
Hi, I want to implement an ideal switch using veriloga code. Can any one help me out with this issue. Thanks in Advance,
I have a top level verilog file, which declares all the inputs, outputs, regs and wires for several sub-files. FetchStage1 fs1( .stall_i(instBufferFull | ctiQueueFull), .clk(clock), .reset(reset), .lastPC) I get the following error while compiling:dot name: Use -sv switch to enabl e
Not sure about the exact syntax for NCverilog. In ModelSim the switch to be included at command line goes like this: +incdir+directory_for_include_files There should be a similar switch for NCverilog, if not the same one. You will have to use: `include "my_include_file.v" In every file you use those constants.
Hi, I am using verilog-A to generate a three terminal(3 nodes) switch in CADENCE. My verilog-A file generates the correct IV characteristics that I expect, but when I try to simulate the fan-out(FO) of a device, I realized that Cadence does not capture defined gate capacitance value in verilog-A. In order to capture the (...)
Hi everybody, I am doing my final year project using switch on de2 board to display VGA, code verilog, can u help me! Thanks regards
with respect to vcs: provide the switch : +libext+.vp in the vcs compilation command; rest the vcs tool will take care of it.
Hi, how can I write a verilog code for hexadecimal counter in a way that I program it on the board and change dip switch value ,so I can change the speed of counting?
upf (or cpf) is only here to define voltage island, isolation to add automatically bye the tool the required isolation cell, level shifter, power switch. the power optimisation, could include gated clock insertion using HVT cells. The power reduction imply, to have done first the architecture analyzis, before to be on the tool.
library IEEE; use IEEE.std_logic_1164.all; use ieee.numeric_std.all; entity PowerControl is port ( Clk : in std_logic; Reset : in std_logic; ms : in std_logic -- xbus_hw_idct enable bit pse_m : out std_logic); --IDCT switch and isolation control power shut off end; architecture rtl of PowerControl
You can if you are using Systemverilog; an input or output port can be a variable of any type. Most simulators will support this if you give the file a extension or use a switch to indicate the code is Systemverilog, not plain verilog.
we have developed an DES algorithm in verilog.Now i have to implement in FPGA board.Now i have to build a module assigning a switch(north) to the input values that connects to the top module(main module).Please help us with some code.I am new to FPGA
Source and include file paths are only for compilation and have no effect on $fopen. As an experiment, you could try opening a new file for writing and see where it puts it. As a lst resort, try giving the full path "C:/Modeltech_pe_edu_10.1d/examples/SystemverilogPractice/switch.txt" And yes, all versions of ModelSim support (...)
Hi boys, please can you help me? I need switch two SD cards for two MCUs. Only 1 SD to 1 MCU at one time. So I need 2 or 4 pins as selector. Select one of two SD and select one of two processors. It will be bus selector, or bus switch if you want. SD card have 6bits of bus. Can I use CPLD for this? Can CPLD drive biderectional? I am totally ne
All tools like cadence incisive, synopsys vcs, mentor graphics modelsim support transistor (switch level primitives) as defined in verilog standard. See those primitives here
hi., i had done the schematic of a circuit in Dsch3 and generated the verilog code for the same using the option in "make a verilog file". This verilog code is then simulated in Xilinx 12.4. the code has no syntax error and was simulated successfully. but when i need to see the synthesis report it is showing some error like "inv.v" line 25: (...)
'type' is Systemverilog keyword. Do you use appropriate switch to instruct Conformal that parsed files are SV?

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