Zombie Zombie - Two-channel Audio

Two-channel Audio

Zombie Zombie also presented two notable innovations. The first was the use of two-channel sound, a then unheard-of feat of a computer equipped with only single-channel 1-bit sound from a tiny speaker. The second was that, through the use of the Sinclair Interface 1, the game's two-channel melodies could be played back on a MIDI-equipped synthesizer. Unfortunately, although a wiring diagram was supplied with the game, the interfacing code had been tested on a Yamaha DX7 with a ROM containing bugs - so the circuit would only work on that particular synthesizer. This came to light when Sandy White attempted to demo the game while connected to an unfamiliar synthesizer.