Register memory architecture

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In computer engineering a register memory architecture allows operations to be performed on (or from) memory, as well as registers.[1] If the architecture allows all operands to be in memory or in registers, or in combinations, it is called a "register plus memory" architecture.[1]

In a register memory approach one of the operands for ADD operation may be in memory, while the other is in a register. This differs from a load/store architecture (used by RISC designs such as MIPS) in which both operands for an ADD operation must be in registers before the ADD.[1]

Examples of register memory architecture are IBM System/360, its successors, and Intel x86.[1] Examples of register plus memory architecture are VAX and the Motorola 68000 family.[1]

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  1. ^ a b c d e Michael J. Flynn (1995). Computer architecture: pipelined and parallel processor design. p. 9-12. ISBN 0867202041.