An IEEE 1149.1-Based Test Access Architecture for ICs with Embedded Cores
Proceedings of the IEEE International Test Conference
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Embedded software debugging using virtual filesystem abstractions
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This paper addresses four issues associated with usingIEEE Standard 1149.1 on system-on-a-chip integrated circuits(SOC ICs). First, a new, simplified method for accessingdebug registers in processor cores embedded within ICsis presented. Second, structural information required byhardware/software processor development tools is presented.Third, issues associated with boundary-scandescription language (BSDL) are discussed. Finally, highspeedboundary-scan cells that avoid a multiplexer delayare presented.