Thanks Gary. Once I launched into the project, it was actually not that hard. The hardest part is understanding the behavior all the signals on/off the boards. Fortunately, Bruk's document provided most of that.
I'm going to embark on a project to do an updated model that will test the newest Legacy boards, the LCP2 and LCP3 boards. It looks to be about 80+ or so the same as the RCMC tester, so it should go pretty smoothly.