How does an asic manufacturer not know how to construct a miner?
Isn't that what they do for a living?
We do know how to build a miner. Our hashboards are running at 250Ghash with no problems or errors. The issue is the SPI communication fails on the current backplane as soon as you attach more than 1 hashboard. We've been trying to fix the current backplane in order to save time.
Can you ship 20 boards with 20 backpanes?
EDIT: how does the hashboard work without a backpane? ...how does it interface with the controller?