Brads Electronic Projects Forum

Posted on the AnyCPU forum, at http://anycpu.org/forum/viewtopic.php?p=2315#p2315 :



Holy mackerel!! It looks like about 340 ICs (counting the mezzanine) and there might be more ICs under the big ones! I've laid out a board with 500 parts, but much of it was analog, and a lot of those were resistors, diodes, and capacitors. The IC count was only about 30. Routing buses for the one above must have been a nightmare, requiring a huge number of layers. Troubleshooting and repairing with those white and yellow wires would be quite a challenge too.

I like it how they ran out of room, so the SIP resistors needed to be tacked on.

I suspect that was to fix problems after some debugging.

Perhaps they didn't have pull-up / down resistors in there and had issues?

Big board you say? Try this:

The biggest Series 32000 board ever from Janz AG: the "Maxi 32000"

Wow, if I counted right, that's 665 ICs on one board, assuming there aren't any on the back.