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Erratum "Unexpected DIV/DIVW instruction result in ISR" - is only the first division affected??

Question asked by Philipp Krause on Jul 19, 2015
According to the erratum in the title, bit 6 of register cc should be reset at the start of an ISR. The erratum note provides code examples for workarounds.

Apparently the result of div/divw is wrong when bit 6 of cc is set before the instruction. And bit 6 is set and reset by the instruction while it is executed.

So I guess bit 6 is always reset after div/divw, an thus only the very fist div/divw in the isr gives a potentially wrong result?

Philipp

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