Fiddling with DMA setup
Screwing with associating timer to dma; I don't really 'get it' at all yet, obviously. Mixing in StdPeriph library API with libopencm3 is annoying. Still, with the limited time I get, I'm getting.. well, nowhere, but I'll get there. Should work on z80, but I know I am close ... the quesiton here is, once the DMA is pumping out pixels at a pixel-clock speed, to get line jitter gone do I need to attach this timer as triggered by hsync or will invoking the dma be enough to keep it close enough..