1984 2M4 fiero, died while driving won't crank, power still works, ignition options don't

I have a 1984 2M4 fiero, I was driving
on the highway aprox 95km 3,000
rpm for aprox 45minutes and the
engine just turned off, lights
continued working! I coasted to
shoulder of hiway tryed to restart the
car and no sound of anything! All the
power in the car was working except
everything towards ignition ex.-
fan,radio,windows,wouldn't turn on
also Gage's wouldn't rest, stayed
frozen in place!  Please help? Thank
you!