[sdiy] Korg KLM-1050 delay PCB

Roman Sowa modular at go2.pl
Wed Jun 21 16:03:21 CEST 2023

It uses masked ROM microcontroller made probably exclusively to KORG, so 
unless someone searches forgotten cellars of KORG factory, no info will 
ever come up.
Why don't you hook up logic analyser or a scope in working DSS-1? I 
don't expect anything more complex than a few bytes sent only when 
effect type is changed. Maybe with very few parameters too.

But is it so impressive to make a module aout of it?
12-bit digital delay from the 80's


W dniu 2023-06-21 o 13:46, mark verbos via Synth-diy pisze:
> Hi,
> I have a couple of KLM-1050 PCBs in a drawer in my shop. That’s the delay board from the DSS-1, maybe others as the KLM-775. Over the course of 20 years or so that these PCBs have lingered with me, I have occasionally wondered if they could be turned into a standalone unit. Looking at the schematic, the audio path in and out seems complete. The control of delay time, feedback and effect level is on 3 digital pins labelled “DATA”, “CLK”, and “STB”. Has anyone cracked the code to control these? It’s outside my area of expertise, but maybe someone has taken a deep dive.
> Mark
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