Information processing apparatus having a register file used int

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364229, 3642295, 36423221, 36423223, 3642402, 3642476, 3642523, 3642624, 3642629, 3642633, 3642558, 364DIG1, 364DIG2, G06F 926, G06F 928, G06F 930, G06F 940

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054370434

ABSTRACT:
An arrangement having a register file having registers greater in number than those which are designated by an instruction, a pipeline ALU, a current window pointer and window number modifier operating in a register window mode, an element counter and address counter operating in a vector register mode, and register determining circuits for determining physical register numbers from the register numbers designated by an instruction in one of the two modes. Each register determining circuit has a first register determining circuit using an output of the window number modifier, for using the register file as a register window configuration, and a second register determining circuit using an output of the element counter, for using the register file as a vector register configuration. Physical registers of the register file are used as scalar registers in the register window mode, and used as vector registers in the vector register modes.

REFERENCES:
patent: 5123095 (1992-06-01), Papadopoulos et al.
patent: 5179674 (1993-01-01), Williams et al.
patent: 5226142 (1993-07-01), Vegesna et al.

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