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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
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10 years ago

I was actually wondering the same thing today. I am working on a design am worrying about truncating the available address space. It appears that the Nios defaults to the following address locations:

Reset: 0x00000000

Exceptions: 0x00000020

Text: 0x00000400

I understand the top 2 are configurable in Qsys, but I have not seen a way to set the main program memory (I.E. txt) to anything other than its default size.

Source: http://courses.ece.ubc.ca/259/2011jan/lectures/l36%20nios%20ii%20interrupts%20advanced%20-%20shorthand%20notes.pdf