I started getting lots of contract work with Bell Labs Neural Network group. This one was for Eduard Sackinger et al. It was a high speed pipeline sequencer to feed their ANNA chip (Analog Neural Network ALU). It had 4 Xilinx 4004 FPGAs. I was not VHDL literate then. Eddie did all that firmware, and their team all made it do useful work in high speed character recognition. I did the schematics, etc. with PCB layout contractors routing.