Make a Pong Game With FPGA by Verilog

I'd like share a fun and simple code can learn about the VGA signal programing, let's go.

Reference site: projectf.io

FPGA Development Kit: Altera Cyclone EP4CE6 board with VGA port

Tools: Quartus Prime Lite Edition 20.1.1

HDL: SystemVerilog

Host OS: Ubuntu 64bits 20.04

Step 1: Prepare the Development Environment

Picture 1:

I am using Quartus Prime Lite Edition which is free for

Download and Install Quartus, https://fpgasoftware.intel.com/20.1.1/?edition=lite

Follow the quick start guide to setup the tools and also the JTAG programmer connection are working well.

Picture 2:

try to get a FPGA development kit and also study the schematics for each pin connection.

Step 2: Load the Pong Project File

Download the pong projects from my github, https://github.com/regishsu/fpga

There are two ways to restore back the pong project:

Way 1: automatic restore

Copy these 2 files(fpga_pong_demo.qar and fpga_pong_demo.qarlog) into a folder which your project folder, i.e pong.

Refer to picture 1, from Project -> Restore Archived Project to select this file "fpga_pong_demo.qar" to restore whole project files.

Way 2: menual

Refer to picture 2, create an new project and then select all of files in source into your new project file list.

Step 3: Code Explain

Here I do some explain for the code,
Top_pong.sv, the main code for the pong game.

clock_gen.v, using the Quartus' IP to generate VGA 25Mhz colck.

display_timings_480p.sv, generate the VGA timing as the picture 4 and 5.

debounce.sv, handle the key press noise.

There are some parameters to you if you may try.

// ball

localparam B_SIZE = 8;

// paddles

localparam P_H = 40; // height in pixels

localparam P_W = 8; // width in pixels

localparam P_SP = 4; // speed

localparam P_OFFS = 32; // offset from screen edge

Step 4: Compilation and Upload to FPGA

Be sure the pin assignment to correct the ports before do the compilation.

I found that the R/G/B port of VGA is just 1bit of my dev board.

Step 5: One More Thing...

you may modify the color/size for ball and paddle, and also add sound feature.

Step 6: