Connecting a AY-3-8910 for a ZX Spectrum 128k clone
Re: Connecting a AY-3-8910 for a ZX Spectrum 128k clone
@alcid34: I've looked very briefly on your schematic and A9 of AY-8-8910 is not connected anywhere. A9 must be kept low, otherwise the AY chip will ignore any address request. Any input designated as TEST should be left open (i.e. floating).
Claudius
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