On Tue, 13 Jan 2009 12:22:22 -0500, Phil Hobbs
wrote:


In fact, I challenge you to find any 100 layer boards,
anywhere, ever... within the next 30 years or more.
That statement simply shows the world your lack of experience.

Then quit posturing and show us!

Sorry, I don't have documentation from thirty years ago, nor would
I have the hardware to display it.

Granted, there's not one second I buy this, but let's see
what you come up with.

Of course you don't. You want to live in your little protected
world forever. The bigger world is scary, for those with such a
limited mind.


At the risk of damping down this lovely flame war, here's a 2004 article
on the IBM z990 series machines that discusses the module and board
layer buildups in detail:

http://www.research.ibm.com/journal/rd/483/winkel.pdf

The net: 110 layers in the modules and 30 in the cards.

Cheers,

Phil Hobbs

While that is interesting, it isn't a 100 layer mainboard
PCB? It seems we are not talking about the same thing,
although a search of the document did not find "110"
anywhere, what page is that on?