[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: I X-Rayed my Apple IIe



>   Both of those cards are 4 layer.  Traces on top and bottom, and the
> power and ground on separate layers in the middle.

Here are two shots of a 512k motherboard.  You can see the difference.
This is what a 4 layer board looks like.  You can see the holes in the
middle layers where the through hole devices go through.

http://media.diywelder.com/images3/090605-512kRAM.jpg

http://media.diywelder.com/images3/090605-512kProcessor.jpg