340+ ICs on one PCB!

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Garth
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340+ ICs on one PCB!

Post by Garth » Sun Jan 29, 2017 1:41 pm

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

Image

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.
http://WilsonMinesCo.com/ lots of 6502 resources

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brad
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Re: 340+ ICs on one PCB!

Post by brad » Tue Mar 14, 2017 8:00 pm

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

Garth
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Re: 340+ ICs on one PCB!

Post by Garth » Wed Mar 15, 2017 4:48 am

I suspect that was to fix problems after some debugging.
http://WilsonMinesCo.com/ lots of 6502 resources

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brad
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Re: 340+ ICs on one PCB!

Post by brad » Mon Mar 27, 2017 11:44 am

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

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Re: 340+ ICs on one PCB!

Post by BigEd » Fri Apr 07, 2017 7:11 am

Big board you say? Try this:

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

Garth
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Re: 340+ ICs on one PCB!

Post by Garth » Fri Apr 07, 2017 8:48 am

Wow, if I counted right, that's 665 ICs on one board, assuming there aren't any on the back.
http://WilsonMinesCo.com/ lots of 6502 resources

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