The Zenith Minisport was the first, and only, computer to use the 2 inch floppy, which was designed specifically for this miniature-sized portable computer. Unfortunately, these specialized floppies were much more expensive than their traditionally sized counterparts, and this is one reason why the Zenith Minisport was not a great success.
The Zenith Minisport ran MSDOS off of an early RAM drive. To save cost and weight it contained no hard drive. Instead the OS was stored in RAM, and a special battery kept the RAM powered so that the information wasn't lost. If the battery ever died, the RAM had to be reloaded using a special external 3.5 inch floppy.
The processor inside this portable computer was an 80C88 that ran at either 4.77 MHz or 8 MHz.
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