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3 1/2" 720K ADAMnet Disk Drive

MICRO INNOVATIONS · Mass Storage
Platform, category and status for this entry were derived automatically from the source list and have not yet been checked by hand.
3 1/2" 720K ADAMnet Disk Drive
Micro Innovations - 3.5 720K ADAMnet Disk Drive - _01.jpg Micro Innovations - 3.5 720K ADAMnet Disk Drive - _02.jpg
2 photographs · hover to enlarge
Catalogue IDHW-0356
ManufacturerMICRO INNOVATIONS
Person or teamMark Gordon
TypeMass Storage (Storage)
Connects viaADAMnet
PlatformADAM
StatusReleased
SourceCollectors DB v1.00 Master

Notes

A 720K double-density 3.5-inch drive for the ADAM, connected over ADAMnet.

Why 3.5-inch mattered

  • The ADAM shipped with 160K 5.25-inch drives and 256K data packs. 720K is four times the disk capacity, on media in a hard shell that survives handling.
  • It is the standard PC double-density format, so disks stayed cheap and available long after 5.25-inch stock disappeared.

An ADAMnet drive carries its own processor and answers commands on the bus, so a drive of a different capacity needs new firmware as well as a new mechanism. Micro Innovations' drive EPROMs are catalogued separately for exactly that reason.

The 1.44MB high-density version is catalogued alongside this one.