Yamaha DX7 II FD, Authorized Product Manual

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Current Play/Edit Memory
Whenever you call up a Voice Memory or Performance Memory in Play Mode, you are
actually sending it to a special location in the DX — the current Play/Edit Memory. As the
name indicates, this is also the location where Voice or Performance data is edited. In
computer terminology, this memory location is often called the Edit Buffer.
Compare/Recall Memory
When you are editing a Voice and use the Edit/Compare feature, the original Voice data is
loaded into the Play/Edit Memory (so you can hear it). The edited Voice data is moved
temporarily into another memory location, the Compare/Recall Memory. In computer
terms, this memory location might be called the Compare Buffer. When you engage the
Recall Edit function for the various Internal Memory types, you are actually recalling the
last data moved to the Compare/Recall Memory.
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