Mockingboard v1 Sound Card

Sweet Micro Systems, USA 1981
Lender: Vienna Museum of Technology
GSE-Reactive, Cherry Hill (USA) 2005
19.5 x 8 x 1.5 cm, ca. 0.3 kg
Two sound chips (AY-3-8913) for six audio channels, two sockets for speech synthesis chips (SSI-263)

The v1 is a clone of the Mockingboard A, a sound card for the Apple II family. The Mockingboard needs its own loudspeaker and cannot use the internal Apple loudspeaker. It is a six-voice two-channel synthesizer, the sound being generated by means of three independent sawtooth generators for each chip. Up to two speech synthesis chips can be added.