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Altera_Forum's avatar
Altera_Forum
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10 years ago

How much ram to allocate for Exception memory?

I'm wondering how big of on-chip memory is recommended if pointing the exception vector to it in qsys/bsp? Is it always a fixed size (like an interrupt vector table), or does it grow dynamicall...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

As with many things, there is no one answer here. It depends on number of factors and design decisions. Vectored interrupts or standard exception funnel? All ISRs in exception memory? etc, etc.

Initially, I would start with one of the design examples and see how it works for you. Since this is an FPGA, nothing is set in stone and you can adjust it as you learn how which options you choose affect the .exception size.

Good luck!

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