Post
Topic
Board Hardware
Re: Black Arrow 28nm 100Ghash Bitcoin ASIC from $1.99/GH/s, miners from $2.97/GH/s
by
rvansch
on 22/05/2014, 00:36:37 UTC

"The issue is the SPI communication fails on the current backplane as soon as you attach more than 1 hashboard."

When problem solving, sometimes it helps to start with the basics:
http://www.embedded.com/electronics-blogs/beginner-s-corner/4023908/Introduction-to-Serial-Peripheral-Interface