System for inserting a supplemental micro-operation flow into a macroinstruction-generated micro-operation flow
US5867701A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1997 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Sep 24, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3861
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for inserting a supplemental micro-operation sequence into a macroinstruction-generated micro-operation flow provides a versatile, flexible mechanism for early pipeline stages of a microprocessor to pass control signals, data, and other information to later pipeline stages. The mechanism is useful to maintain precise timing of a fault model in pipelined processors. A method includes the step of detecting the occurrence of a predetermined uop-inserting event and, responsive thereto, generating a control signal to a uop insertion unit. Responsive thereto, the uop insertion unit supplies signals to a decoder which, responsive thereto, decodes the signal encoded within the signal to provide the inserted uop sequence, which is inserted in a position within the macroinstruction-generated micro-operation flow predetermined by the uop-inserting event.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.