Anybody know whose M marks these are?
2016-07-11 by Brad
Hey guys, I just got some old Digital Group stuff, including one of their motherboards that was never built. And I notice it has the same green color PCB I was looking for, and has these little M marks all over it, just like the original TV Typewriter boards did. I'm wondering if there's any way to find out what manufacturer this was and see if maybe I can track down (probably unlikely) some vintage PCB stock? http://s1381.photobucket.com/user/unclefalter/media/20160711_153350_zpsqqr38 jay.jpg.html Brad