Page "TurboExpress" Paragraph 6
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Some TurboGrafx-16 HuCards saved game data to the internal memory of the TurboGrafx-CD unit, TurboDuo, or TurboBooster Plus ( a peripheral for the core TG-16 console ).
The TurboExpress lacked this internal memory, and as a result it was not capable of saving in this manner.
Most games provided a password save mechanism as an alternative.
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