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Sry, I don't understand this. What do you mean with custom optcode ? Taking the whole bunch of the ISR directly in the VIC, so that I don't need alt_irq_register ?
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Maybe this helps?
http://www.alteraforum.org/forum/showthread.php?p=65073 And Google: ALT_CI_EXCEPTION_VECTOR_N
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Sounds good to me! Can you explain me in few words how to accomplish this, please ?
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That's covered in this thread in fact:
http://www.alteraforum.com/forum/showpost.php?p=92691&postcount=19 --- Quote Start ---
The timings are based on standard IIC (no VIC) and -O0 optimations. So, I haven't done any optimations yet
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Don't bother timing anything until you're using -O2 or -O3 - the difference is night and day.
Bill
Honored Contributor
