The Commodore Years - Hardware - Quick Data Drives
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Entrepo Model 8500 QDD Phonemark Model 8500 QDD
Serial number 012937 made in Taiwan ROC. Serial number 001093 made in Taiwan ROC.
 
Microwafers (Data drives and wafers to same scale but not actual size).
A compromise between cassette tapes and disks, the Quick Data Drive uses a continuous loop of magnetic tape in a plastic case. This enables programs and data to be searched for from the current position without rewinding as you would need to with a cassette and at random like with a disk. The microwafer and its tape are much smaller than a regular cassette.
The tape drive uses the datassette connector on the 64. It can also be set up to work with the VIC. The drive comes with its own operating system (QOS) on a microwafer. Microwafer sizes range from 16kb to 128kb. Drives can be daisychained or used with a datassette. Microwaves should be backed up as the tape can get entangled in the drive and become unusable.
With the majority of games on cassettes, the Quick Data Drive was not a great success.
 
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