CONSTANT RECONSTRUCTING PROCESSOR WHICH SUPPORTS REDUCTIONS IN CODE SIZE

摘要

CONSTANT RECONSTRUCTING PROCESSOR WHICH SUPPORTS REDUCTIONSIN CODE SIZE A processor includes a constant register 36 for storinga constant, a format decoder 21 for decoding a format codelocated in the P0.0 field of an instruction stored in theinstruction register 10, and a constant register controlunit 32 which, when the format decoder 21 has decoded thatthe instruction includes a constant to be stored in theconstant register 36, shifts the presently stored value inthe constant register 36 and stores the constant into theconstant register 36.