Can anyone tell me anything about this chip?
Again, it's a Motorola chip, which is marked "zc93124cp"
It's an ASIC.
Might it be some kind of embedded CPU?
It might well contain a CPU.
What does it do,
It converts electrical energy into heat. Aside from that, it's
hard to say.
and where do I find more information
about it?
You probably can't. Motorola certainly won't tell you about it.
Maybe the manufacturer of the system containing the chip might, but
it's pretty unlikely.
This is why it's much more interesting to deal with OLD computers.