Hello, I have few questions on magic 1. What are locali and viali used for ? 2. what metal layer are used to connect the diffusion layer in the attached picture?

@Abdullahi: "locali" stands for "local interconnect". It is a titanium nitride layer and very resistive compared to metal, so it's not good for routing long wires. From any diffusion or poly layer, you want to contact up to

locali

, and then immediately contact up again with the

mcon

layer to

metal1

(

mcon

is also called

viali

in magic, not to be confused with the

via

layer, which is between

m1

and

m2

). The device generator has options for automatically adding

mcon

contacts up to

metal1

from source, drain, or gate; using the device generator to draw the contacts is a lot easier than manually drawing them on the layout.

Thanks @Tim Edwards