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The invention relates to a method for storing and accesing an operand in a memory unit of a computer, and specifically, to a method for accessing a data operand stored in a main memory unit N independently controlled channels a memory cache and a tag store, wherein the method comprises the steps of comparing a physical address with the tag store, the cache tags comprising N status bits, referencing the channels, and a method for writing a data operand in a main memory unit with N independently controlled channels.