1. An improved memory organization for use in a computer display system including a display having a plurality of display pixels for defining images, comprising: a frame buffer memory having a plurality of selectively addressable memeory cells organized into a three-dimensional matrix, wherein each of said memory cells is adapted for storing a data bit defining selected characteristics of a corresponding display pixel and wherein said memory cells are relatable by a first bit organization oriented in a first plane of said matirx and a second bit organization orientied in a second plane of said matrix; said first and second bit organizations defining, respectively, first and second characteristics among said selected characteristics; reading means coupled to said frame buffer memory for selectively reading, in one memory cycle operation, a plurality of bits from memory cells related by one of said bit organizations and defining one of said first or said second characteristics; writing means coupled to said frame buffer memory for selectively writing, in one memory cycle operation, a plurality of bits into memory cells related by one of said bit organizations and defining one of said first or second characteristics; control logic means coupled to said reading means and said writing means for generating control signals for controllably selecting one of said first and second bit organizations; whereby image data may be conveniently organized in a single memory array for selective storage and retrieval in one of said first and second bit organizations so as to provide said selected characteristics of said pixels.