From: jl@glen--canyon.com   
      
   Given an RP2040 CPU with two ARM processors (we call them Alice and   
   Bob), how can they talk to one another?   
      
   We hate FIFOs. Is it possible for them to share a block of the SRAM?   
   It would be cool if the two programs could both declare a struct and   
   both be able to access it simultaneously. We's manage the access   
   details ourselves, who writes to what variables.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)