In our other videos we have shown how you can create a digital circuit and download to an FPGA board by using TINACloud’s Schematic Editor:
Programming a Terasic Intel FPGA board with TINACloud using Schematic Design Entry and the VHDL hardware description language:
Programming a Terasic Intel FPGA board in VHDL with TINACloud.
Now, in this video tutorial our circuit, a full adder will be based on the Verilog hardware description language.
The textual description of the hardware greatly enhances portability and reusability.
By using hardware description languages describing the fundamental operations, structures and connections, virtually any logical circuit can be defined.
As we stated earlier TINACloud works with schematics, but we can also place HDL macros, including VHDL and Verilog, in the design.
First, we will test our circuit with Verilog circuit simulation in TINACloud.
The circuit operates like a half adder while Carry_In value is low.
- When both inputs are low while Carry_In is also low, then Sum and Carry_Out are also low.
- When just one input is low while Carry_In is low, then Sum is high and Carry_Out is also low.
- When both inputs are high when Carry_In is low, then Sum is low and Carry_Out is high.
Now, let’s see what happens when Carry_In is high.
- When Carry_In is high while both inputs are low, then Sum is high too and Carry_Out is low.
- When Carry_In is high while only one input is high, then Sum is low and Carry_Out is also high.
- When Carry_In is high while both inputs are high, then Sum and Carry_Out are also high.
If Carry_in is high, then the output values change as if we had added one to the full adder.
Next, we will export the Verilog to the Intel Quartus software, compile it and load the resulting bitstream into the Terasic DE10-Lite Intel FPGA board.
Finally, we will present how our simulated full adder circuit works along with the programmed Terasic DE10-Lite hardware and show that in all cases, the results are exactly the same.
Check our other video “Programming a Terasic Intel FPGA Board in VHDL with TINACloud”, where we use a Verilog component in FPGA design.
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