On 2022-04-22 02:29, Paul Gilmartin wrote:
On Apr 21, 2022, at 10:21:46, Robin Vowels wrote:
AL and SL report overflow via the CC, as carry out.
rather, AL and SL report a carry from
the MSB.
That is overflow.
It it is not overflow.
It is overflow from an unsigned arithmetic operation.
If you are doing multiple-word arithmetic, it is carry out,
and you add 1 to the sum /difference of the next-higher pair of words.
It does not trap if overflow is
enabled ini the program mask.
Of course not. You might be doing multiple-word arithmetic.
