Mark Newland wrote:
>
> The key word was his third word.  He said "I think", not "I KNOW".  Based on that
> word, it cast SOME doubt in my mind as to the accuracy of his statement.  I even
> said that I didn't "disbelieve" him but if I go around in life believing EVERYTHING
> I am told without testing it's accuracy, then I would be a sucker for sure.
>

Is there a virus or something going around?

Lately, the PIClist seems to have a slightly sour tone about it and
keyboards seem to be getting a bit of Caps Lock use.

I know it's very hard to convey "feeling" in emails, but I can give an
assurance that I don't try to harass anyone by replying to a problem. To
me this list is informative and fun and I hope it stays that way.

I know they are hard to understand at times, but this information is
written in all the data sheets that I can see, under the STATUS register
heading. More specifically STATUS bits DC C and Z are updated in the Q4
cycle.

As I understand it, a read takes place in Q1, so it would explain why
you can read the actual STATUS value before the Z bit is updated.

When STATUS is the destination of an instruction, these 3 bits may or
may not be isolated from the data, I don't know, but later on in Q4 they
are set according to the logical result of the instruction. Which is why
clrf STATUS leaves 000??100 as a result, where ?? is the TO and PD bit
values.

I hope this helps.

--
Best regards

Tony

mICros
http://www.bubblesoftonline.com
mailto:sales@bubblesoftonline.com

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