2003 Toyota Highlander What happens when you cross wires on

Last nite, I had to jump my Highlander. In the dark, I confused the leads from the car I was jumping to the Highlander and actually turned the Highlander over with leads crossed.

The car now will crank - starter seems fine - but it won't start. It has gas. It also will not come out of park without using the override switch on the transmission.

ALSO - I cannot get anything from my code reader - it won't even come on. This makes me wonder if the PCM has been destroyed in the process.

HELP!