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Altera_Forum
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9 years ago

Methods of Halting/Stalling Nios II/f CPU, WAITREQUEST Scope and Access

Other than stopping the clock, is there a guaranteed way of halting or stalling the Nios II/f CPU without it losing its place (i.e., maintain PC, pipelines, and register values)? I see the W...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

debugreq will not work because you need to insert BRET instruction into CPU pipeline in order to recover from debug mode.

Stopping the clock would be the best for now unless you are using normal instruction/data masters.