I have an ST7735-controlled screen that I've used for the Julie project, and it'd be a shame not to take advantage of that to implement a driver for it. It would mean making sure μC PPU runs on the Teensy 3.x series of microcontrollers, which are Cortex M4 chips, and very much not SAMD. They also have different DMA controllers, so this'll likely modify what that code needs to look like for all the tech, and I may have to create a DMA driver interface there.
I have an ST7735-controlled screen that I've used for the Julie project, and it'd be a shame not to take advantage of that to implement a driver for it. It would mean making sure μC PPU runs on the Teensy 3.x series of microcontrollers, which are Cortex M4 chips, and very much not SAMD. They also have different DMA controllers, so this'll likely modify what that code needs to look like for all the tech, and I may have to create a DMA driver interface there.