=== General Sound ===
"General Sound" (GS) is a sound card for ZX-Spectrum 48/128/etc... developed by X-Trade in 1997 as a commercial product. It is a 4 channel, 8-bit sound board with similar capabilities as the [[Amiga ]] Paula chip. It has its own Z80 CPU onboard running at 12MHz, and 128KB of memory (16KB ROM and 112KB of RAM). The GS was very popular in Eastern Europe. [https://spectrumcomputing.co.uk/entry/1000171/Hardware/General_Sound Source]
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