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On 6/25/2025 1:04 PM, Don Y wrote:

> This is too "high tech".  You're effectively trying to build a TDR into
> each device.  Recall, I want these to be dirt cheap because I use so 
> many of
> them in a system.

You could tile 'em. A local bus north west south and east with the main 
IO bus on the perimeter.

Send outputs towards the edge using a greedy algorithm that only needs 
local state and if a tile has failed then route around it.