[sdiy] MIDIVerb reverse engineering

[Eric Brombaugh]

Back in 2021 Paul Schreiber and I reverse engineered the MIDIVerb I and 
although Paul posted a number of Youtube videos to discuss what we'd 
learned, we decided at that time to keep the design materials we'd 
generated from that effort private. Now that Paul is no longer with us 
I've open-sourced the materials on Github:

https://github.com/emeb/MIDIVerb_RE

This repository includes schematics, presentation slides, source code 
for the disassembler, emulator and compiler, as well as SPICE and 
Verilog models of the logic. Anyone at all curious about how this 
product democratized the world of algorithmic reverb is invited to take 
a look - it's a fascinating glimpse into 1980's minimal TTL design and a 
testament to the genius of Alesis founder Keith Barr.

Eric