General question not related to specific device. I understand it is an arithmetic overflow in simplest terms. Wondering the specific instances where it is set. Tried to research on net and found two answers.
1. XOR of a carry into the sign bit and a carry out of the sign bit.
2. For addition, set when positive num + positive num = positive num and when negative num + negative num = positive num.
For subtraction, set when negative num - positive num = negative num and when positive num - negative num = negative num.
Anyone have a good description?