On Sun, 11 Jan 2004 09:48:57 -0500, Olin Lathrop wrote:

>Bob Barr wrote:
>> On the 16-series devices, so does avoiding the use of bit set/clear
>> operations on ports by rolling your own read-modify-write operation.
>> Reading the whole port in, modifying W as you need to, and then
>> writing the whole thing back works well in situations like this.
>
>That just creates your own manual version of the read-modify-write problem.
>

Good point. I need to re-read my own posts before I ever hit 'send' on
them.

I was thinking just in terms of the particular bit that the OP was
concerned about. I should have thought about that a little more before
I posted my reply.

If there is an r-m-w issue, it's always the *other* pins on the port
that are the problem, not the one that's being modified. Sorry.


Regards, Bob

<snip>

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