897 Pong
897 : Pong
- Author: Jack Flusche
- Description: Pong on raw silicon
- GitHub repository
- Open in 3D viewer
- Open in VGA Playground
- Clock: 25175000 Hz
How it works
It uses a custom VGA sync module to generate VGA sync signals, then uses pixel-clock-based logic to generate sprites and background color.
How to test
Software:
Use make to run the included vga-test submodule to run a graphical test in real time. Use make gl to run a gate-level test with the included vga-gl submodule.
Note: gate-level testing is not in real time, and presimulates the inputs and outputs. It also takes much longer to start, but will run at 60fps, as opposed to the variable fps of vga-test.
Hardware:
Attach all external hardware. Be sure to reset the design. Press the P2SRV button to start the game, control with up and down.
External hardware
- TinyVGA PMOD
- 6 buttons connected between 3.3v and input and pulldown resistors for the buttons
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | P1UP | R1 | DE |
| 1 | P1DN | G1 | |
| 2 | P1SRV | B1 | |
| 3 | P2UP | VSYNC | |
| 4 | P2DN | R0 | |
| 5 | P2SRV | G0 | |
| 6 | B0 | L | |
| 7 | STEREO_EN | HSYNC | R/MONO |