1. LAB #3 Design of Combinational Logic “The Trip Genie”
ENG2410 Digital Design
LAB #3 Design of Combinational Logic
“The Trip Genie”

2. Lab Objectives Understand the design flow of digital circuits.
Design a router for travelling salespeople.
Enter the design using Schematic Capture
Implement the router using NEXYS 3 board.
Test and Debug your design and verify software simulation and hardware implementation.
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3. The Trip Genie A sales man travels between 4 cities.
6 highways connect the 4 cities.
Given two cities what is the shortest path for the sales man.
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4. Implementation Use the NEXYS 3 Switch for city selection.
Use the NEXYS 3 LEDs for highway indication.
The sales man should select two cities by flipping the corresponding switch.
The proposed path should be displayed on the LED.
Write the truth table of the trip genie.
Derive the combinational function for each highway.
Draw a schematic capture for each function.
Map your design on the NEXYS 3 FPGA Board.
ENG241/ Lab #3

5. UCF File You will use the following assignments:
NET C1 LOC = T5; // left most slide switch on the NEXYS 3 board
NET C2 LOC = V8; // Next slide switch on the board
NET C2 LOC = U8; // third slide switch on the board
NET C3 LOC = N8; // fourth slide switch on the board
NET H1 LOC = T11; // left most LED on the NEXYS 3 board
NET H2 LOC = R11; // Next LED on the board
NET H3 LOC = N11; // third LED on the board
NET H4 LOC = M11; // fourth LED on the board
NET H5 LOC = V15; // fifth LED on the board
NET H6 LOC = U15; // sixth LED on the board
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6. Lab Report
NO LAB REPORT REQUIRED FOR THIS LAB
ENG241/ Lab #3

7. Academic Misconduct
Reports and demos are submitted as a group, but it is a SINGLE group effort
You may talk with other groups but sharing codes or reports is NOT ALLOWED
ENG241/ Lab #3