For computers, hardware and software can be separated in a way that is not possible with humans (with current technology). When the separation is possible, I agree personhood should be attributed to the software rather than the hardware, so your machine should not be considered a person. If in the future it becomes routinely possible to scan, duplicate and emulate human minds, then killing a biological human will probably also be less of a crime than it is now, as long as his/her mind is preserved. (Maybe there would be a taboo instead about deleting minds with no backup, even when they are not "running" on hardware).

It is also possible than in such a future where the concept of a person is commonly associated with a mind pattern, legalizing infanticide before brain development seats in would be acceptable. So perhaps we are not in disagreement after all, since on a different subthread you have said you do not really support legalization of infanticide in our current society.

I still think there is a bit of a meta diagreement: you seem to think that the laws and morality of this hypothetical future society would be better than our current ones, while I see it as a change in what are the appropriate Schelling points for the law to rule, in response to technological changes, without the end point being more "correct" in any absolute sense than our current law.