On 8/4/17 10:46, emanuel stiebler via cctalk wrote: >> > USB with 480MHz is fast enough >> >> I think our plan was to skip that speed, and go with the next one down, > Probably sufficient for a start ... > > on >> the grounds that the analog part at that speed would be too tricky >> for us. > > No, it isn't.
Definitely I'll stick with 12Mb/s USB to start (for sure on our wire-wrapped prototype board) but I'd love to boost that to 480Mb/s later. The analog issue is one thing that made me dubious about going to high-speed but also whether the FPGA without special serial hardware can go that fast. If it can, fantastic. I'll take all the pointers I can get. > You use container files in fat16, or simply 1:1 block mapping? 1:1 block mapping. I'm going to have enough fun with trying to implement the USB stack in the FPGA without doing FAT16 too. > I agree some how with your approach, but it leads to debugging of > issues, you wouldn't have on real boards ... No doubt. It's been a learning experience and we still have a long ways to go. Dave
