Length detecting unit for parallel processing of variable sequen

Details Length detecting unit for parallel processing of variable sequen Length detecting unit for parallel processing of variable sequen

1996-06-28

1998-12-01

Ellis, Richard L.

395386, G06F 930

Patent

active

058450998

ABSTRACT:
A microprocessor with a circuit that selects at least one instruction from a stream of N successive instruction bytes. The circuit includes a first pointing unit that indicates a position of a first byte of an instruction of the stream of N successive instruction bytes. The circuit also includes a second pointing unit that stores a vector having a length N which indicates a position of a last byte of the instruction in the stream. The circuit further includes a first alignment unit coupled to the first and the second pointing units, the first alignment unit aligns the vector at a position indicating the first byte of an instruction. The circuit includes a first and a second length detecting units that receive the aligned vector in parallel. The first and second length detecting units simultaneously determine the length of a current instruction and the length of a next instruction, respectively, of the stream of N successive instruction bytes.

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