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A "portable" Commodore 64. Shaped vaguely like a seat cushion, this cumbersome experiment in transportable computers had a detachable keyboard on one end which, when removed, revealed a 6" monitor and a 5 1/4" floppy disk drive. The curious combination of a bulky design and microscopic display are the most likely cause for the SX64's discontinuation.
[Processor? RAM? Dates?]