Re: Arithmetics with carry -- got it :-)

Aaaah, now I got it!

The problem was that I read somewhere that a SUB instruction generates
a carry flag when subtracting a negative number and the result becomes
too big. So I automatically assumed somehow that an ADD instruction
also generates a carry flag when adding a negative number (which is
wrong). I also forgot that when I have a negative number, also the
high halfword will be FFFF. I thought it would be zero because the
abs(i) is small enough to fit into the low halfword, but due to the
sign it is NOT zero.

Peter: I am not using the counter macro because this operation is one
of many operations in an algorithm and the value needs to be in the
RAM which is only connected to the processor.

Thanks to everybody who helped me out with this.