Anyone know off hand the clock frequency on the 16197427 ($OD) computer? It is the black writing on one of the silver components with two leads on the PCB board. I am guessing it would say 8.3338 or 12.5829
I checked around at Ludis' site and searched the web but couldn't find anything. I figured that someone might know here. If not, I guess I can head to the yard and pick one up for disecting.

Thanks,
J

 

The crystal says 8.386 (could be 4.388, hard to tell). Even though the 16197427 is a PCM-6, the crystal is the same frequency as the 1227730 and other P-4's and twice that of the C-3 ECM's (4.1931). HTH.

 

Thank you. I guess the only PCM that runs at the faster rate is the LT1 PCM then.