The Ware for August 2012 is shown below.
This is yet another ware recovered from my childhood basement stash. Unlike the previous ware, I actually have no idea what computer this comes from. Clearly, an IBM of some type; probably an old mainframe, from the early ’80s. But these boards were rescued from a dumpster with no sign in sight of what machine it comes from. I’m hoping someone can definitively resolve the question of which machine this came from, and what function this particular board had.
I also had one other question I’m hoping someone can answer — why did all the boards from this machine feature a regular array of holes, as opposed to vias drilled on demand? I have my own hypotheses, but it’d be nice to hear from someone who knows the answer!