High speed microprocessor branch decision circuit

Details High speed microprocessor branch decision circuit High speed microprocessor branch decision circuit

1995-06-07

1996-12-24

Chin, Gary

Boots, shoes, and leggings

3642613, 3642615, 364258, 364259, 364DIG1, G06F 9302, G06F 9305, G06F 934

Patent

active

055881270

ABSTRACT:
In accordance with the present invention, a circuit 50 for providing a branch decision signal based on the results of an arithmetic or logic operation is described. The circuit comprises at least two candidate branch decision circuits 52,54,56,58, each for computing a candidate branch decision signal, each assuming a unique candidate condition code for at least one of the alu status signals. The circuit further comprises a first selection circuit 62,64,66 for selecting from the candidate branch decision signals a proper branch decision signal based on the alu status signal at such time as the status signal becomes valid. Other devices, systems and methods are also disclosed.

REFERENCES:
patent: 4947369 (1990-08-01), Thoma et al.
patent: 5020016 (1991-05-01), Nakano et al.
patent: 5247627 (1993-09-01), Murakami et al.

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