963 Spin, Text and VGA
963 : Spin, Text and VGA
- Author: Michael Pucher
- Description: Making the seven segment display spin around, showing text and drawing a logo to VGA
- GitHub repository
- Open in 3D viewer
- Open in Tiny Tapeout Explorer
- Open in VGA Playground
- View in Wokwi
- Clock: 4 Hz
How it works
The default behavior of the design is meant to be run at frequencies around 1-5Hz and does a little spinning and text display on the seven segment display. However, the second part of the design implements VGA output! It will display a little logo (the logo of the CTF team I am participating in) on a VGA monitor if you flip DIP switch 1 and run it at 25.175MHz.
How to test
Either run at 1-5Hz in default and look at the spinning on the seven segment display, or run at 25.175 Mhz and flip DIP switch 0/pull input 0 to high to enable VGA output.
External hardware
To look at the VGA output, you will need a VGA capable monitor and cable, plus the TinyTapeout VGA pmod.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | Pull high/flip DIP switch to enable VGA | sevseg1:A or R1 | unused |
| 1 | unused | sevseg1:B or G1 | unused |
| 2 | unused | sevseg1:C or B1 | unused |
| 3 | unused | sevseg1:D or vsync | unused |
| 4 | unused | sevseg1:E or R0 | unused |
| 5 | unused | sevseg1:F or G0 | unused |
| 6 | unused | sevseg1:G or B0 | unused |
| 7 | unused | sevseg1:DP or hsync | unused |