SGU-1 Tech Demo 1

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SGU-1 — Sound Generator Unit 1 is a new audio-synthesis hardware under development as part of the X65 Project.

A video demonstrating sound playback on X65 sound chip:
SGU-1 — Sound Generator Unit 1.

Playing (heavily butchered) 6-channel chiptune
by Zack Maxis (aka Manganoid)
titled Mystery Cannon.

SGU-1 playing 6 channel SID


SGU-1 — Sound Generator Unit 1

is a new audio-synthesis hardware under development as part of the X65 Project.


It is based on the tildearrow Sound Unit

fantasy sound chip from the Furnace chiptune tracker.


SGU-1 is implemented using an RP2350 microcontroller paired with an audio CODEC chip.

Together they generate a stereo 48 kHz I²S stream, which is converted to an analog stereo line-out signal.


SGU-1_breadboard_prototype


Contemporary audio-synthesis chips with advanced features are no longer manufactured,

so creating our own solution was the only practical way to bring such capabilities to the X65.


The six-channel chiptune you are hearing is an excellent piece by Zack Maxis (aka Manganoid) titled: Mystery Cannon.

In this tech-demo it is heavily butchered by a rough, direct SID -> SGU-1 register translation. It is intended purely as a technical proof-of-concept for the work-in-progress hardware.

Do not evaluate Zack’s composition based on this demo. Seek out and listen to the original SID version to appreciate it properly.


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