Photographs of chip dies at 10× and 20×, zoomable in full resolution — plus notes on the code and rigs behind them.https://klangfeldlabs.com/enhttps://klangfeldlabs.com/posts/2026-09-27-doom-os-sp404mk2/https://klangfeldlabs.com/posts/2026-09-27-doom-os-sp404mk2/A heavily modified custom OS with a new graphical pattern sequencer, mixer, and much, much more!Sun, 27 Sep 2026 00:00:00 GMTsp-404mk2rolandfirmwarereverse engineeringdoom osteardownlab@klangfeldlabs.com (Quintus Oostendorp)