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Why do I like to do a simulation?
The second reason why I like simulation is that a simulation generated trace will contain every wire within the design. For this reason, when something doesn’t work in hardware, I’ll almost always return to simulation and try to do the same thing in simulation to see if I can come across the same bug.
Why do digital designs not work in simulation?
Digital designs don’t work if the time between clock pulses isn’t sufficient for all of the logic to take place between when one flip flop sets its value and the next one needs the value to be held constant. This is often the meaning of the word “timing” in this context.
What causes a simulator to not match synthesis?
Because metastability is only caused if the signal changes right at the clock edge, it is a rare event–but often not rare enough. Either way, the simulator will rarely if ever notice it. Here are some examples of things that might cause metastability. No synchronization of async signal Inputs to a design may be asynchronous.
Which is faster a simulation or a synthesis?
But that’s just synthesis. For small designs, simulation is still faster. Of course, ultimately, the hardware is always faster–but in the time it takes to get there, you might manage to get an answer via simulation. The second reason why I like simulation is that a simulation generated trace will contain every wire within the design.
Why does the simulation not match the design?
In that case, the design might have a value that is neither “1” nor “0”, causing unpredictable results in subsequent logic. Because metastability is only caused if the signal changes right at the clock edge, it is a rare event–but often not rare enough. Either way, the simulator will rarely if ever notice it.
What happens when you power up a circuit?
There is nothing more frustrating than spending many hours on a circuit and when you power it up……it doesn’t work. After de-bugging more than three thousand circuits, I have come up with a check list of the most common problems with experimental circuits.
Why is my circuit board not working properly?
7 Reasons Your Circuit Isn’t Working 1. Bad Connection Or No Connection. A-You left out a wire or connection. It is easy to leave out a connection. Double… 2. Wrong Connection. You are usually looking at the top of the circuit board and soldering the bottom of the circuit… 3. Noise In The