A non-inclusive list includes: the Roland S-10 and MKS100 samplers, the Korg sqd1, the Korg SQD8 MIDI sequencer, Akai's 1985 model MD280 drive for the S-612 MIDI Sampler, Akai's X7000 / S700 (rack version) and X3700, the Roland S-220, and the Yamaha MDF1 MIDI disk drive (intended for their DX7/21/100/TX7 synthesizers, RX11/21/21L drum machines, and QX1, QX21 and QX5 MIDI sequencers).Īs the cost in the 1980s to add 5.25-inch drives was still quite high, the Mitsumi Quick Disk was competing as a lower cost alternative packaged in several now obscure 8-bit computer systems. The Quick Disk was also used in several MIDI keyboards and MIDI samplers of the mid 1980s. The Smith Corona disks are confusingly labeled "DataDisk 2.8 inch", presumably referring to the size of the medium inside the hard plastic case. Mitsumi's "3-inch" Quick Disk media were also used in a 3-inch×3-inch housing for many Smith Corona word processors. Most FDS disks did not have cover protection to prevent media contamination, but a later special series of five games did include a protective shutter. The FDS package of Mitsumi's Quick Disk used a 3-inch×4-inch plastic housing called the "Disk System Card". The Quick Disk's most successful use was in Nintendo's Famicom Disk System. Nintendo packaged the 2.8-inch magnetic media in a 3-inch×4-inch housing, while others packaged the same media in a 3 inch×3 inch sq housing. The Quick Disk uses a 2.8-inch magnetic media, break-off write-protection tabs (one for each side), and contains a see-through hole near center spindle (used to ensure spindle clamping). Mitsumi offered this as OEM equipment, expecting their VAR customers to customize the packaging for their own particular use disks thus vary in storage capacity and casing size. The Quick Disk format is referred to in various size references: 2.8-inch, 3-inch×3-inch and 3-inch×4-inch. Another 3-inch format was Mitsumi's Quick Disk format.
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