Stimulus file

If vectors from a stimulus file were applied, say every 1 ns, and all the module instances in the netlist represent behavioral models with no delay, the results between the design model and the netlist will be skewed because of the difference in delays. The correct approach in such a case is ... 

In section 3.1.2, we discussed a testbench who e the stimulus was specified in the VHDL code. In this section, we discuss an alternative approach to VHDL simulation. This requires the use of the TEXTIO from a TEXTIO file. In this approach, stimulus is read from a stimulus file and the ouq)uts of the DUT are written to an output file. 

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To apply the waveform displayed in the Stimulus Editor window to the VI part in the schematic and return to the schematic, select File and then Exit from the Stimulus Editor menu bar ... 

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Besides the challenge of new chemistry represented by these fused systems and the desire for mapping of their physicochemical properties, much of the interest in these systems is caused by their close structural analogies to purines and the essential biological functions of the latter hence a great number of patent applications have been filed for potential biological applications. A further stimulus has been the discovery of some of these ring systems in natural products. 

One approach to verifying functionality is to simulate the netlist with the same set of stimulus as used during design model simulation, save the results in a results file and compare to see if the results are identical. This scenario is shown in Figure 5-2. 

Another approach is to write a test bench a test bench is a model written in Verilog HDL that applies stimulus, compares the output responses, and reports any functional mismatches. Figure 5-3 shows such a scenario. A test bench for a full-adder is shown next. The stimulus is read from a vector file Inputs.vec its contents are of the form ... 

Taken together, browsing and clustering techniques can make structure files much more accessible, particularly to infrequent and non-expert users. Further, they can act as a great stimulus for creativity, thereby magnifying the value of the information resource. They also have a considerable part to play in pattern recognition and structure-activity studies, but this is not discussed here. 

Knowing the fault experiments execution (EM generates a log fde) and the behaviour of the MUT under this stimulus (saved in the log file), the functional and, in this case, fault tolerance requirements are automatically checked by an assertion-based automatic verification tool. 

Temperature affects the conduction velocity of nerves both locally at the site of a stimulus and also generally along file length of the nerve. The central nervous system is at core temperature, which is normally kept constant due to homeostatic processes therefore the nerves within the CNS always conduct at the same velocity. However, nerves within the peripheral nervous system are dependent on the temperature of the skin and the environment. As a result if a limb is cold the conduction velocity in the peripheral nerves of that limb falls drastically with a factor ranging from 1.2 to 2.4 ms for every 1°C drop in cutaneous temperature. ... 

In this chapter, we discuss an example VHDL code, provide a testbench for the same example and the output files of the simulation performed using VSS. Two i proaches to simulation are discussed. The first approach is suited to an interactive simulation with waveforms, while the second involves reading the stimulus from a test file and writing the output to another file. 

This process reads the stimulus from a file and applies... 

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