[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