AMY
... that Atari showed off its AMY additive synthesis sound chip in a special version of the 65XE computer, but never released it and focused on the Atari ST instead?
... that <a href="./Atari" id="mwE2s" rel="mw:WikiLink" title="Atari">Atari</a> showed off its <b id="mwE2w"><a href="./Atari_AMY" id="mwE20" rel="mw:WikiLink" title="Atari AMY">AMY</a></b> <a href="./Additive_synthesis" id="mwE24" rel="mw:WikiLink" title="Additive synthesis">additive synthesis</a> <a href="./Sound_chip" id="mwE28" rel="mw:WikiLink" title="Sound chip">sound chip</a> in a special version of the <a href="./Atari_8-bit_family" id="mwE3A" rel="mw:WikiLink" title="Atari 8-bit family">65XE</a> computer, but never released it and focused on the <a href="./Atari_ST" id="mwE3E" rel="mw:WikiLink" title="Atari ST">Atari ST</a> instead?