how to remove assign statements in gatelevel netslit?

[ls000rhb]

after synthesis with DC, some assign statements still exist in the gatelevel netlist. I know this case should be avoided. but can anyone tell me how to solve the problem?if these assign statement still exist, what potential drawbacks it would cause ? please give some good instructions. Thanks

 

[snr_vlsi]

Hi,

After reading in the netlist containing assign statements and linking to libs, use the following command

set_fix_multiple_port_nets -all -buffer_constants

thx
snr_vlsi

 

[atremp]

if the parameter "set_fix_multiple_port_nets -all -buffer_constants" not work, how can I do?

 

[shiv_emf]

omg assign statement in netlist..

U cannot map to any cell. what could be cause of such behaviour in DC?

 

[sam536]

set_fix_multiple_port_nets -all -buffer_constants [get_designs *]
compile -inc -only_design_rule
will remove all the assign statements in the netlsit.

atremp ,
what does it mean, set_fix_multiple_port_nets -all -buffer_constants doesnt work.
Do u mean, after setting this, still do u have assign statements in netlist. check the above procedure to remove the assign statements in netlsit

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omg assign statement in netlist..

U cannot map to any cell. what could be cause of such behaviour in DC? .

The equaivalent cells are not avialble in the library. one such common case , if u try to repleaces latches with scanable elements.

#==============

--Sam