Multicycle NOP

Details Multicycle NOP Multicycle NOP

1998-01-20

1999-09-28

Maung, Zami

Electrical computers and digital processing systems: processing

Dynamic instruction dependency checking, monitoring or...

Reducing an impact of a stall or pipeline bubble

712215, 712245, G06F 928

Patent

active

059580445

ABSTRACT:
A method for controlling the execution of a microprocessor to cause it to execute a NOP instruction for a programmable number of sequential cycles. A NOP instruction is provided, that includes a predetermined OP code field identifying the NOP instruction as a programmably multiple NOP instruction. A predetermined count field is provided, representing the number of sequential cycles in which a NOP operation is to be performed by said microprocessor. The NOP instruction OP code field is read, as is the NOP instruction count field. In response thereto, a NOP operation is performed for the number of sequential cycles represented by said NOP instruction count field.

REFERENCES:
patent: 4855947 (1989-08-01), Zmyslowski et al.
patent: 5515519 (1996-05-01), Yoshioka et al.
patent: 5546037 (1996-08-01), Kenny et al.
patent: 5727194 (1998-03-01), Shridhar et al.

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