An interesting use for the RC AY/YM soundcard with the ZXTT to generate DTMF tones here:
https://mastodonapp.uk/@robertprice/113721658928773290
ZXTT is my add-on for Ed Brindley's RC2014 card to use the AY-3-8910/12 / YM2149. Released in August 2021 the ZXTT clocks the soundchip at the same exact frequency as the ZX Spectrum 128K computers, so if you're playing back ZX Spectrum music it sounds pitch perfect!
Tindie: https://www.tindie.com/products/quazar/zxtt-zx-true-tone-add-on-for-rc2014-ymay/
eBay: https://www.ebay.co.uk/itm/116425992600
[#]rc2014 #soundchip #chiptune #synth #8bit
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