67 KK Zuzel Motocross IEEE
67 : KK Zuzel Motocross IEEE
- Author: Krzysztof Kluczek
- Description: A motor track racing game for up to 4 players, each using only one button.
- GitHub repository
- Open in 3D viewer
- Open in VGA Playground
- Clock: 25175000 Hz
How it works
A motor track racing game for up to 4 players. Each player controls his/her bike using a single input pin:
- 0 - straight+accelerate
- 1 - turn left+brake
Bidirectional input pins select game mode:
- [1:0] - Track selection
- [3:2] - Game speed
Outpace your opponents and don't fall out of the track!
Playable online version & (upcoming) writeup: http://devkk.net/index.php?tag=games&id=39 Original repository: https://github.com/Krzysiek-K/KK-Zuzel-VGA
Game screenshot.
All 4 available tracks.
The chip design features:
- 7-bit track generator CPU (with 3 custom instructions)
- Common player control block (generating 15 control signals)
- 4x player simulation block (each featuring 4 registers, 2x streaming 1-bit ALUs and a 7x7 sprite generator)
- VGA timing generator
- Top level logic (tying everything together, generating final video signal and performing collision detection)
How to test
- Connect to VGA.
- Use Bidirectional pins [1:0] to select one of the 4 available tracks.
- Use Bidirectional pins [3:2] to select game speed.
- Use Input pin 4 to reset gameplay.
- Use Input pins [3:0] to control motobikes.
External hardware
- VGA output PMOD
- Gameplay reset signal on Input[4] (active 1)
- 4 input signals from player controls on Input[3:0] (active 1)
- Gameplay mode switches on Bidirectional port [3:0] (active 1)
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | Player1_In | R1 | Game_Track[0] |
| 1 | Player2_In | G1 | Game_Track[1] |
| 2 | Player3_In | B1 | Game_Speed[0] |
| 3 | Player4_In | VSync | Game_Speed[1] |
| 4 | Game_Reset | R0 | |
| 5 | G0 | ||
| 6 | B0 | ||
| 7 | HSync |