On 02/02/2017 06:24 AM, dwight wrote: > Are you sure the cores are transformers and not memory > > cores? > > Dwight
It's pretty obvious to me that there are several turns on each core. Given the PCB fab date (10/73), there were better methods for keeping around a few bits than core. If you compare this board with some of the circuitry found in the EMM bitsavers documentation, it's a pretty good bet that this was a driver board. Note that empty pads for a 20-pin 0.600" wide IC also. --Chuck
