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Thanks for posting this. What does "coherent" mean in this context, and why is it special?

Basically, https://en.wikipedia.org/wiki/Cache_coherence. You want to ensure all the devices on the bus have the same view of memory contents.

Thank you. I wasn't about to dig just to find that out. Thanks :) +1

This is what I was looking for before deciding to read the article or not. Didn't find it, came back here, and now I just won't bother. Unfortunate.