How would such a program work? What would it do in order to produce subjective feelings?
You do understand that you can not just write a program to do some arbitrary X if that's not within the capabilities of the hardware it's running on.
For example, you cannot write a program that would make the laptop fly. You need something that's physically capable of flying that can also be controlled by software. Like a drone or something.
I did not make such a statement. I made the point that computers certainly are not. Therefore you cannot reduce consciousness to information processing. For many reasons, the most important one is that "information processing" can be used to describe the flow of water in pipes, so if you say that is sufficient to produce consciousness then you must say that the sewage system is conscious.
People who have taken psychedelics may disagree but I think consciouness is tightly connected with sense of self, the ego. An organism that is conscious can have a sense of self. An organism with a sense of self may have a greater degree of flexible self preservation / flexible self promotion than a simple stimulus response network. Because we are conscious we focus on what we are feeling about our selves not just on the immediate sensory stimulus. Pyschedelics may break down the connection / integration of senses with self giving rise to the illusion of consciousness outside of the self-brain. But I would say this is an illusion.