RISC computer with unaligned reference handling and method for the same

  • US 4,814,976 A
  • Filed: 12/23/1986
  • Issued: 03/21/1989
  • Est. Priority Date: 12/23/1986
  • Status: Expired due to Term
First Claim
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1. In a reduced instruction set computer with a memory holding m-bit words separated by word boundaries, a device for retrieving an unaligned reference from said memory comprising:

  • a. a general register;

    b. means for retrieving a first word containing a first portion of said unaligned reference in response to a nth instruction and a second word containing a second portion of said unaligned reference from said memory in response to an (n+k)th instruction;

    c. shifting means for shifting said first portion to a first position and second portion to a second position; and

    d. combining means for combining said first and second portions in said general register, wherein k and n are positive integers.

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