Phantom redundancy: a high-level synthesis approach for manufacturability
ICCAD '95 Proceedings of the 1995 IEEE/ACM international conference on Computer-aided design
Automatic Synthesis of Self-Recovering VLSI Systems
IEEE Transactions on Computers
High-level synthesis of gracefully degradable ASICs
EDTC '96 Proceedings of the 1996 European conference on Design and Test
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We present two novel reconfigurationschemes, L/U reconfiguration and itsgeneralization, band reconfiguration, toachieve graceful degradation for generalmicroarchitecture datapaths. Upon detection of adatapath fault, hardware and algorithmicreconfigurations are performed dynamically through operationrescheduling and hardware rebinding. Instead ofa complete shuffling, the proposed scheme perturbs the originalschedule and binding in a systematic fashion. This regularity of thescheme allows well-structured design planning for the controller andthe datapath. The underlying microarchitecturesupporting such reconfiguration schemes isbriefly outlined. Experimental evidence indicates negligibleperformance and small hardware overheads.