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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
11 years ago

I do however have one more question for anyone knowledgeable about IRQ's. My nios is communicating with an RTL component. This component is sending a one clock cycle "pulsed" interrupt to the Nios. Will the Nios recognize this IRQ during its instruction cycle? Both the Nios and the RTL component are operating synchronously on the same clock.