We Are Vocoders by Dmitry_Milk at DiHalt2026 summer

CW: flickering video

... but unbelievable chiptune version of Kraftwerk's Robots on a ZX Spectrum.

The ZX Spectrum didn't have a sound chip or any kind of graphics chip. It used the Z80 to update the screen, and any sound was via a simple beeper. Many years ago, it was discovered that the beeper could be toggled above audible frequencies to generate complex tones and multiple 'channels'.

This entire demo is only 12468 bytes long.

#chiptune #demoscene