( ESNUG 243 Item 1 ) ---------------------------------------------- [7/17/96]
Subject: ( ESNUG 241 #9 242 #4) Will Trade My Secret Switches For Yours!
> I'd like to see more secret switches "exposed" in ESNUG. In trade, here's
> mine: I was having headaches with Synopsys putting in unnecessary buffers.
> (I figured out that there was no capacitance, fannout, or timing problem,
> but I was still getting two inverters on each output.) Here's the fix:
>
> /* clean up unnecessary inverters */
> compile_clean_inverters = true
>
> Sure enough. My extra inverters went away.
From: [ I Am The Walrus ]
John: Anonymous, please.
Thanks for the info on this. It seems to be a relatively new feature.
I found it has no affect for v3.2b while it does seem to for v3.4b.
(v3.2b)
/* clean up unnecessary inverters */
compile_clean_inverters = true
Warning: Defining new variable 'compile_clean_inverters'. (EQN-10)
"true"
1
(v3.4b)
/* clean up unnecessary inverters */
compile_clean_inverters = true
"true"
1
I look forward to hearing what others find while checking out some of those
other undocumented commands!
- [ I Am The Walrus ]
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