strobe | A mirror of strobe

This is a literal result of the act of elaboration. When the line

if_memory if_memory();

is elaborated, it doesn't take into context what the logic nets are connected to at that level of hierarchy, or another.

If the declaration contained a port, such as:

if_memory if_memory(.clk(clk));

This warning would go away, because there would be a default net connected. Apparently the quartus assembler builds the modports at a later runtime.

While this is 'just how quartus works', this isn't a useful warning, and really doesn't contain useful information in this context. The warning is preceded by the elaboration step. In system verilog, it's common to have interfaces that just connect nets, in this case, there would be no way to not get this warning, even if all nets were connected in lower level modules even if modports attached to all nets.

Your sleep function is a browser killer!

It squarely blocks all JS execution by keeping it inside a while loop for a couple seconds (which is way to long), repetitively. So if you have a button on the website, the click event will not respond. Nothing will, in fact. Put simply, that is an horrible idea.

To achieve the effect you want, just have an interval to trigger a CSS @keyframes animation for the brief flash up effect.

Here is all you need:

Try

Check for EOF before you read each line of the file:

Your theme has a weird setting that adds width property to each product. It was different for the products you mentioned.

I limited the width of the div by adding max-width:100vw for this class woocommerce-product-gallery__image, which seems to do the job but you need to find out why different inline width properties are added to different products even though they have same 900x900 image sizes.

Because you have declared requestChipSelect to be 1 bit wide:

This is the greatest documentation to resolve your issue. plz make sure that your project file structure was correct and recheck your project's build.gradle file

1. [Gradle Documentation] 1

2. this is may not be related to ur question but the idea form those, there are so many repositories on github plz go through it. as an example use the following repository and generate .jar file Springboot with gradle

   Repository Link

The rising edge of clk after which en is raised is not the same as the rising edge of clk at which your shift register shifts. en is asserted high after rising edge N and de-asserted after rising edge N+1. Your shift register is thus shifted at rising edge N+1.

So you have about one clock period delay between assertions of en and the register shifts. You don't care because your specification says that you want a shift period of 1 second. As long as en is periodic with a period of one second, even if there is a small constant delay between en and your shift register, you fulfill the specifications.

But what is of uttermost importance is that, as it is seen by your shift register, en is asserted high sufficiently after rising edge N to avoid a too early shift and de-asserted sufficiently after rising edge N+1 to allow a good nice shift. If you are interested in this too, please continue reading.

Your en signal is computed from the outputs of registers synchronized on the same clock clk as your shift register. You cannot have any hold time problem there: the propagation delay from the rising edge of the clock to the outputs of your cntr and cntr_msb_delayed registers guarantee that en will arrive at your shift register sufficiently after the rising edge of the clock that caused it (assuming you don't have large clock skews). It cannot arrive too early.

Can it arrive too late (setup time problem)? Yes, if your clock frequency is too high. The clock period would then be too short, en would not have enough time to be computed, stabilize and propagate to your shift register before the next rising edge of the clock and anything could happen (no shift at all, partial shift, metastabilities...)

This is a very common concern in digital design: you cannot operate at an arbitrarily high clock frequency. If you could you would clock your own computer at yotta-Hz or even more, instead of giga-Hz, and everything would become instantaneous. It would be nice but it is not how the real world works.

In a digital design you always have what is called a critical path. It is a particular chain of logic gates between a set of source registers and a destination register, along which the propagation delay of electrical signals is the largest of the whole design.

Which path it is among all possible and the total delay along this path depend on your design's complexity (e.g. the number of bits of your counter), your target hardware technology (e.g. the FPGA of your prototyping board) and the operating conditions (temperature, voltage of power supply, speed-grade of your FPGA).

(Yes, it depends also on the temperature, reason why hard-core gamers cool down their computers with high performance cooling systems. This avoids the destruction of the silicon and allows to operate the computer at a higher clock frequency with more frames per second and a better user experience.)

The largest time it takes for the signals to travel from the source clock-edge to the arrival at destination, augmented by a small security margin called the setup time of the destination register, is the smallest clock period (highest clock frequency) at which you can run your design. As long as you don't exceed this limit your system works as expected.

Hardware design tool chains usually comprise a Static Timing Analyzer (STA) that tells you what this maximum clock frequency is for your design, your target, and your operating conditions. If it tells you 500 MHz and you need only 350 MHz, everything is fine (you could however investigate and see if you could modify your design, save some hardware, and still run at 350 MHz).

But if you need 650 MHz it is time to roll up your sleeves, look at the critical path (the STA will also show the path), understand it and rework your design to speed it up (e.g. pipeline long computations, use carry look ahead adders instead of carry ripple...) Note that, usually, when you encounter timing closure problems you do not consider only one critical path but the set of all paths that exceed your time budget because you want to eliminate them all, not just the worst. This is why the STA gives you not only the worst critical path but a list of critical paths, in decreasing order of severity.

It seems like you need to read what parameters you need to use in order to send a legal command, this protocol only defines some of the items you wish to send, for example: