Actually, the "99.9% correct" was in reference to your many other extensive
replies found here and on the BBS.

        Best regards,

                Dan Matthews

At 10:30 AM 11/23/95 -0800, you wrote:
>Dan Matthews <dmatthew@primenet.com> wrote:
>
>> I hate to correct you when you are 99.9% right, but...
>>
>> In the PIC16CXX architecture EVERY instruction that accesses a
>> register performs a read first, for the exact reason mentioned,
>> simplification of design.
>>
>> In this case, a MOVWF to PORTB during what would be a change on
>> PORTB interrupt will in fact clear the interrupt condition.
>
>Thanks, Dan...  My message to John Payson was just the singlw word,
>"no", so I guess the portion that was "99.9% right" was the
>list's mail address, his quoted question, and my signature.
>
>It was bad enough when only instructions that performed an EXPLICIT
>read or read-modify-write kept the interrupt from happening... This
>new information makes the change-on-portB interrupt almost
>COMPLETELY worthless.  Does Microchip see this as a bug and plan to
>correct it in future revs of the chip?
>
>-Andy
>
>
>Andrew Warren - fastfwd@ix.netcom.com
>Fast Forward Engineering, Vista, California
>
>