if your actully getting voltage out of the secondary windings of the coil, the fault would be within the coil wire, or the spark is grounding inside the distributor. if you have voltage to the coil, but no spark, take a test light, hook it up to the - side of the coil then ground it, if the light flashes, your getting a signal from the modual, if not, your not getting a signal. you could have the modual tested, if it's not flashing, if it's good check the hall effect/ Magnetic pickup to make shure it's working, a magnetic pickup will generate a voltage, if you spin the motor over, with a dvom hooked up, you can verify it's working by this. the modual is a transistor, when the magnetic pickup/ hall effect triggers, it turns off the voltage to the coil, the magnetic field collapses and induces a voltage into the secondary windings.
Also check the crank sensor, some ign's will not pulse until the modual get a crankshaft position ( MOPAR is big on this ). we just finished up a '95 Jeep that an autoshop was playing parts changer on, it would not start, he replaced hall effect sensor in the dizzy , starter, ASD relay, ignition switch and wanted to replace the PCM. after a little reserch on shopkey, I found that on this jeep, the ignition will not pulse without a crankshaft position, so we tested the crank sensor with a lab scope, and shure enough, it was bad, replaced and it runs good now.