Tiny Tapeout > Tiny Tapeout Chips > Tiny Tapeout SKY 26a > 1001 Variable Speed and Colour Select VGA Rings
1001 Variable Speed and Colour Select VGA Rings
1001 : Variable Speed and Colour Select VGA Rings
- Author: Shalindra Gunasekera
- Description: RGB VGA rings with variable speed and colour select
- GitHub repository
- Open in 3D viewer
- Open in VGA Playground
- Clock: 25175000 Hz
How it works
The ring display uses the ui_in byte to set the speed and colours present in the rings. The bit description enables the following when enabled:
- ui_in[1:0] - speed select
- ui_in[2]: Reverse Direction
- ui_in[3]: Red Disable
- ui_in[4]: Green Disable
- ui_in[5]: Blue Disabled
- ui_in[7:6]: not used
How to test
Simply just tie the relevant pins to toggle the relevant settings
External hardware
VGA display and connecter will be required.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | R1 | ||
| 1 | G1 | ||
| 2 | B1 | ||
| 3 | VSync | ||
| 4 | R0 | ||
| 5 | G0 | ||
| 6 | B0 | ||
| 7 | HSync |