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Path _Delay Command

Hello!

I am a new user of RTL Compiler and i am trying to synthesize a combinational circuit(with inputs A,B and an output named Output) in order to get later a layout from SoC Encounter and i want to constraint its delay. I saw in RTL compiler's manual the command

path_delay -delay integer
     { {-from {instance |external_delay |clock |port |pin }...
       |-through {instance |port |pin }...[-through...]...
       |-to {instance |external_delay |clock |port |pin }...}...
       |-paths string }
     [-lenient] [-mode mode_name ] [-name string ]

in RC i put the command like this: path_delay -from {A} -to {Output} -delay 4000 but this does not seem to be correct.I would appreciate any help!Thanks in advance!

johannes over 16 years ago

Hi!
In general, this is correct, as long as an input port "A" and an output port "Output" exist in your design. What error do you get?
Nevertheless, I would recommend to use the following style:
path_delay -from [find /designs -port A] -to [find /designs -port Output] -delay 4000
Regards,
Johannes
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Kliatakis over 16 years ago

I managed to get it to work properly!but thanks !
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