17ECL58 HDL Lab syllabus for EC

Laboratory Experiments

Part–A: PROGRAMMING

1. Write Verilog code to realize all the logic gates

2. Write a Verilog program for the following combinational designs

a. 2 to 4 decoder

b. 8 to 3 (encoder without priority & with priority)

c. 8 to 1 multiplexer. d. 4 bit binary to gray converter e. Multiplexer, de-multiplexer, comparator.

3. Write a VHDL and Verilog code to describe the functions of a Full Adder using three modeling styles.

4. Write a Verilog code to model 32 bit ALU using the schematic diagram shown below

• ALU should use combinational logic to calculate an output based on the four bit op-code input.
• ALU should pass the result to the out bus when enable line in high, and tri-state the out bus when the enable line is low.
• ALU should decode the 4 bit op-code according to the example given below.

5. Develop the Verilog code for the following flip-flops, SR, D, JK and T.

6. Design a 4 bit binary, BCD counters (Synchronous reset and Asynchronous reset) and ―any sequence‖ counters, using Verilog code.

Part–B: INTERFACING (at least four of the following must be covered using VHDL/Verilog)

1. Write HDL code to display messages on an alpha numeric LCD display.

2. Write HDL code to interface Hex key pad and display the key code on seven segment display.

3. Write HDL code to control speed, direction of DC and Stepper motor.

4. Write HDL code to accept Analog signal, Temperature sensor and display the data on LCD or Seven segment display.

5. Write HDL code to generate different waveforms (Sine, Square, Triangle, Ramp etc.,) using DAC - change the frequency.

6. Write HDL code to simulate Elevator operation.

Course Outcomes:

At the end of this course, students should be able to:

• Write the Verilog/VHDL programs to simulate Combinational circuits in Dataflow, Behavioral and Gate level Abstractions.
• Describe sequential circuits like flip flops and counters in Behavioral description and obtain simulation waveforms.
• Synthesize Combinational and Sequential circuits on programmable ICs and test the hardware.
• Interface the hardware to the programmable chips and obtain the required output.

Conduct of Practical Examination:

1.All laboratory experiments are to be included for practical examination.

2.Strictly follow the instructions as printed on the cover page of answer script for breakup of marks.

3.Change of experiment is allowed only once and Marks allotted to the procedure part to be made zero.