Re: Positional/physical addressing

On 6/26/2025 12:58 PM, bitrex wrote:

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.

But that requires a fair number of interconnects between devices (tiles).
And, likely a more complex (larger/costlier) implementation.
If I could guarantee (by design) that a failure looks like an
"absent" device, then things get considerably easier (as you
have to deal with the possibility of absences, regardless)