Hmm, they have samples in tray. I got samples in small blue box. Maybe bigger orders (20k? vs. 10k) have better samples

Btw. Avalon-ref tell precalc needs on page 7. Pseudocode have for(í=0;i<64;i++) and if's i=0,1,2. Is three round precalc enough or miss I something?

And asic's seems to go popular so difficulty rise. It renders K16 (&etc desings) too expensive (too much parts/cost per one asic).  Sorry.
 Controller should have more IO lines to drive many asic chains. Like pic32MX795F512L 85pcs IO for ~8$.
Asic chains should be longer. Avalon used 10pcs length K16 use 8pcs. What broblems can arise if asic chain are 16pcs lenght? How long it can be?