136 Asynchronous Parallel Processor Demonstrator

136 : Asynchronous Parallel Processor Demonstrator

  • Author: Paul Schulz
  • Description: Implementation for an Asynchronous Parallel Processor
  • GitHub repository
  • Clock: 10000000 Hz

How it works

See Github: https://github.com/PaulSchulz/tt05-async-proc

This circuit is an investigation into an asynchronous parallel processor design. (Work in progress.)

Note: This is a very early design and doesn't do very much.

A processing node follows the following state flow:

  • Wait for valid data;
  • Process the data to produce an output value, and let neighboring nodes know that processing in being done;
  • Make the result available; and wait for more data to process.

In this example, the processing node is doing a calculation on four(4) inputs of 4 bits. The calculation is based on a deconstruction of the the "Arctic Circle Theorem" model. (video)

In future designs: 1) allow the processing nodes to be programmable; 2) layout a multinode interconnected array (with global clocking); 3) investigate a clockless version; and 4)

How to test

Reset to clear internal buffers.

Set inputs and load them into the input buffers.

Set clock to calculate result and display on outputs.

Experiment by trying different input values.

Picture

IO

#InputOutputBidirectional
0input bit 0segment a (up)bit 0 (not used)
1input bit 1segment b (right)bit 1 (not used)
2input bit 2segment cbit 2 (not used)
3input bit 3segment d (processing)bit 3 (not used)
4load input 1 (right)segment ebit 4 (not used)
5load input 2 (up)segment f (left)bit 5 (not used)
6load input 3 (left)segment g (down)bit 6 (not used)
7load input 4 (down)dot (data ready)bit 7 (not used)

Chip location

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