testing an ECM

i have a 1984 bronco II. I asm getting no spark. is there any way to test the ecm, i have replaced most everything else. and still have no spark

Did you put a 12 volt test light on the coil negative try to start and the light should blink. If it doesn't buy a rebuilt distributor if you have 12 volt to the coil positive. If it blinks take the module for a free test to Advance Auto or Auto Zone. The relay for the EEC IV is in the passenger side kick panel make sure it is clicking. Make sure the computer ground is tight.
Try this before trying a scrap yard computer.