Re: [avr-gcc-list] generic queue library for AVR GCC?

[Theodore A. Roth]

On Mon, 15 Nov 2004, Bruce D. Lightner wrote:

> Theodore A. Roth wrote:
>
> >>My way also preserves the original state of the interrupt flag,
> >>which may be essential, depending upon the circumstance.
> >
> > It's not obvious to me that Geoffrey's method does not preserve the
> > state of the I flag. In both your code and his the SREG ends up on the
> > stack during a context switch or interrupt (implicitly with your code
> > and explicitly with Geoffrey's).
> >
> > Can someone please explain how the state the I flag is not preserved?
>
> Sorry to mislead you.  It *is* preserved.  Let me re-phrase...
>
> *Just like Geoffrey's method*, my way also preserves the original
> state of the interrupt flag, which may be essential, depending
> upon the circumstance.

Thanks for the clarification. I thought I was going nuts. ;-)

---
Ted Roth
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