Simulation nodes disappearing

Hi All,

I am new to Quartus II, and am trying to run a functional

simulation. I am using the "Vector Waveform Editor" and put in input

nodes and some of the output nodes that I want to see. However, when

I run the functional simulation, I do not see the waveforms for some

of the input/output nodes. The warnings say: "Can't find node <X> for

functional simulation. Ignored vector source file node." The warning

for the inputs is: "Can't find signal in vector source file for input

pin <X>."

How do I fix this error? Thanks in advance.

I have tried the following:

This warning occurs when after synthesis, the node you intend to see is

buried inside a logic element or is optimized away completely.

The best thing to do is to go to the Assignment Organizer (Ctrl+Shift+A) and

do the following:

In the "To" field, add the name of the node that disappeared in the

simulation. In the "Assignment Name" field, choose the "Implement as output

of logic cell", and in the "Value" field, choose "On".

Do this for all the nodes that disappeared (buses and wildcards are OK when

entering the assignment) an you should be OK.

However, it doesnt seem to do the trick