676 VGA Color Tiles
676 : VGA Color Tiles
- Author: Edgar Hofmann
- Description: 640x480 display with moving color tiles
- GitHub repository
- Open in 3D viewer
- Open in Tiny Tapeout Explorer
- Open in VGA Playground
- Clock: 25000000 Hz
How it works
This project displays moving color tiles on a VGA 640x480 screen. It's follows the Tiny Tapeout platform.
Technical Details
Colors are displayed in a mosaic of 9 square tiles. Colors shift each second. Code was created for a Digilent PMod VGA with 4 bit color (12 bits in total), but was rewritten to adapt to TT Pmod VGA where colors are 2 bit. Clock is 25Mhz (640x480 Pixel Clock).
How to test
- Connect a VGA PMOD (such as the Tiny VGA PMOD) to the output pins
- Connect a VGA monitor
- Apply power and release reset
Controls
None
External hardware
- Tiny VGA PMOD (or compatible RGB222 VGA PMOD)
- VGA monitor or display with VGA input
- Digilent PModVGA can be used but TT Board bidirectional bus has to be configured as output to support 4 bit outputs for each color and outputs have to be assigned to _cor variable.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | R1 | ||
| 1 | G1 | ||
| 2 | B1 | ||
| 3 | VSync | ||
| 4 | R0 | ||
| 5 | G0 | ||
| 6 | B0 | ||
| 7 | HSync |