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Tutorial 5: Simulating a Design. Introduction This tutorial covers how to perform a functional simulation as well as a timing simulation with the Xilinx.

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Presentation on theme: "Tutorial 5: Simulating a Design. Introduction This tutorial covers how to perform a functional simulation as well as a timing simulation with the Xilinx."— Presentation transcript:

1 Tutorial 5: Simulating a Design

2 Introduction This tutorial covers how to perform a functional simulation as well as a timing simulation with the Xilinx software. A one-bit comparator was chosen as the example circuit.

3 One-Bit Comparator

4 Opening the Simulator Simulation Icon Tools -> Simulation/Verification -> Gate Simulator Update Netlist

5 Selecting input and output signals Chip Icon Signal -> Add Signal

6

7 Component Selection Select Inputs and Outputs Add button Double-Clicking Close button

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9 Test Pins SC button Tools -> Schematic Capture Simulation Toolbox Icon Mode -> Testpoint Click on net name to create probe Sim Icon to return

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11 Adding Stimuli Stimulator icon Signal -> Add Stimulators Binary Counter to mark inputs Close Stimulator window

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13 Defining the Frequency of the free-running Counter Options -> Preferences B0 Period drop-down list B0 Frequency adjusts automatically

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15 Doing the Simulation and Viewing the Waveforms “Functional” from pull down menu Simulation Step (footstep) Adjust step size with pull down menu Ruler Icon – adjust scale of time axis

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17 Schematic Simulation SC Icon Logic Values of each signal Gray Boxes -> Colored Boxes

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19 Timing Simulation Detailed information of timing delays First implement design – Implementation Icon Verification Button (Timing Simulation) Select components from Signals Selection and Chip Selection Close to return

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21 Doing the Simulation and Measuring Delays “Timing” from pull down menu Step Icon (footsteps) Measure Delay – Waveform -> Measurements -> Measurements on Select start and end points

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