[quote author=ramus12  link=1109451125/0#0 date=1109451125]
What is the best way to specify inputs for simulation of a 64 bit adder using Spectre circuit simulator?
[/quote]

First try to make a file in ASCII with digital inputs for A, B and Cin individually.  Then you can convert that file into voltage sources (Time-Value pairs) using any scripting language. Then you can use 'vpwlf' source in cadence to read directly from a file that you have created.  This according to me is the simplest way.  probably some body else can throw some more light on this.

Bye
kamesh.