Looking at the Intellasys / Chuck Moore multicore parallel Forth(s) engines SEAforth-24 and SEAforth-40C18
Pictured here (courtesy Intellasys) is the 40C18, 40 very fast dual-stack cores with tiny RAM connected Up-Down-Left-Right in a grid to their neighbor cores. Only the edge nodes, certain of the edge nodes, can do I/O. Program bits travel in a bucket brigade to interior and I/O-less nodes across the 4x10 chessboard.
