Microprocessor having barrel shifter and direct path for directl

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Details

395425, 3642627, 3642628, 3649476, 364DIG2, G06F 700, G06F 922, G06F 940

Patent

active

052952509

ABSTRACT:
A microprocessor includes a barrel shifter, a rewrite section, and a control section. The barrel shifter serves as a shift unit which is controlled by a microprogram and operated by microinstructions for performing extraction, insertion, and comparison of consecutive bit strings in word data. The rewrite section directly rewrites output data from the barrel shifter into its input. The control section controls the rewrite section by using the microprogram.

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patent: 5132898 (1992-07-01), Sakamura
IEEE Journal of Solid State Circuits, Oct. 1989, vol. 24, No. 5 A 20-MIPS Sustained 32-bit CMOS Microprocessor with High Ration of Sustained to Peak Performance pp. 1348-1359.
Manfred R. Schroeder et al. "Code-Excited Linear Prediction (CELP): High-Quality Speech at Very Low Bit Rates", 1985 IEEE, pp. 937-940.

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