Pi zero video card via bare metal programming

Rolling your own synthesizer is no small feat, which is what [Thomas] has taken on with his project “Nerdsynth”. [Thomas] has an impressive amount of data on his site covering the overall design and progress of the project, but that isn’t what piqued our interest. [Thomas] has an on-board TFT display to navigate the versatile Nerdsynth’s menu https://hackadaycom.files.wordpress....ng?w=358&h=251but he wanted to add video output to do some video sequencing. After some investigation and poking around the available options he decided to tackle yet another sub-project (textbook scope-creep).
[Thomas] chose to do to some bare metal programming on the Pi Zero to use it as a video cardfor video output. By following a tutorial from Valversand modifying an SPI driver from Microelecroniki he was able to clone the video on an external monitor. This is a step in the right direction and we’ll have to keep an eye on his site for updates about video sequencing on the external display.

https://hackaday.com/2016/01/17/pi-z...l-programming/