[sdiy] Dual MFOS ADSR layouts

[David G. Dixon]

I finished my custom dual MFOS ADSR module today, and it all works
swimmingly!  It's two complete MFOS ADSRs on a single 4" x 6" pcb, with
added AR repeat mode and inverted outputs.  If anybody's interested, please
let me know and I can send the schematic, my funky Excel-based pcb layout
with bill of materials, and an FPD front panel file (2U wide in pseudo-MOTM
format with Thomas White-inspired fonts).

Next on the agenda: a dual Mike Sims two-OTA VCA module (a la Oakley) with
added log CV mode!