@ClaraListensprechen@universeodon.com @smellsofbikes @NilaJones I was just wondering. I remember seeing a photo of the insides of the Intel devices I used and the substrate was red.

Oh, and I just remembered that one of the first hand-assembled 64k x 1 DRAM chips from Motorola made it's way into my hands in 1980 or 81. It was for another guy's project so I never worked with it.