Advanced instruction execution system for assigning different in

Details Advanced instruction execution system for assigning different in Advanced instruction execution system for assigning different in

1991-07-10

1994-07-26

Lee, Thomas C.

Boots, shoes, and leggings

3642318, 364263, 3642631, 364DIG1, 364948, 36494834, 395800, G06F 938

Patent

active

053332814

ABSTRACT:
In an instruction processing unit of an information processing system in which operable instructions are executed as executing instructions on operands held by operand registers to store results of execution in result registers and in which a bypass arrangement is controlled by an enable signal to bypass the operand and the result registers when an instruction is one of inoperable instructions and should use, as a particular operand, a particular result of execution of a particular one of the executing instructions, an instruction managing section (52) manages the execution instructions by entry numbers related individually to the executing instructions to successively produce the entry numbers as managed entry numbers at predetermined time instants. An execution waiting instruction buffer (56) holds, as a held entry number, one of the entry numbers that is related to the particular instruction when one of the inoperable instructions indicates an operand register equal to one of the result registers that is indicated by the particular instruction. A coincidence finding section (58) finds coincidence between the held entry number with each of the managed entry numbers to produce a coincidence signal as the enable signal whenever the coincidence is found.

REFERENCES:
patent: 4128880 (1978-12-01), Cray, Jr.
patent: 4594682 (1986-06-01), Drimak
patent: 4683547 (1987-07-01), DeGroot
patent: 4750112 (1988-06-01), Jones et al.
patent: 4760519 (1988-07-01), Papworth et al.
patent: 4777592 (1988-10-01), Yano

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