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Altera_Forum's avatar
Altera_Forum
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11 years ago

External interrupt not triggering software exception

I currently hav a push button connected up to my IRQ input on my Nios. When the button is asserted, I expect to see my program counter jump to my exceptions section in my assembly source code. When t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Nios supports level-interrupt type, which means that slave sending interrupt signals need to stay high until Nios acknowledges it by disabling it once entering ISR.