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Altera_Forum's avatar
Altera_Forum
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21 years ago

IRQ handler problem

Hi all, I have build an application on Stratix II, with three CPU's. I have ONE (!) pio line connected to the system of three CPU's. In the SOPC builder I connected the three CPU&#39...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Using 3 PIOs will enable you to turn off each signal in turn. However you need the logic to disable/clear the original interrupting hardware, plus once all 3 CPUs have handled the IRQ you need to re-enable all 3 of your PIOs. This could be done in software, but you'd be much better off desiging a bit of logic to solve the problem.