[Hspice]what's the function of .PROTECT .UNPROTECT statement

pugongying said:

From the hspice manual:
Use the .PROTECT statement to keep models and cell libraries private.
The .UNPROTECT statement restores normal output functions from a .PROTECT statement.

But I am still confused about these two statement,can you explain it in more details?Thanks very much.

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tandr said:

It is used to protect the confitential information of the
model library .

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pugongying said:

Now I understand that some information between the .protect and .unprotect statement will not print out in the *.lis file,and what is the purpose,just let the output be more readable or confidential?

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engrvip said:

it helps in making ur list file small by remving unnecessary model files from it.

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shaq said:

pugongying said:

From the hspice manual:
Use the .PROTECT statement to keep models and cell libraries private.
The .UNPROTECT statement restores normal output functions from a .PROTECT statement.

But I am still confused about these two statement,can you explain it in more details?Thanks very much.

Click to expand...

Let me show a example for you.

.protect

.lib '018rf.l' tt

.unprotect

After you do spice simulation, your *.lis file will not contain the information of spice model, 018rf.l .

Hence, your *.lis will be smaller before you not yet add these two statement.

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