assign statement in netlist

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omid219

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do_xform_fix_multiport_nets

Hi,

I'm using PKS from cadence as synthesis tool. In the generated netlist, there are some "assign" statements. I know how to get rid of them in synopsys' design compiler or cadenc's rtl compiler. But I don't kknow how can I get rid of "assign" statements in PKS? Any idea how can I fix this?

Thanks
 

Hi,
two reasons cause assign statement in netlist.
1. two or more poort connected to same net.
2 . a port directly connected to 1'b0 or 1'b1

you can try:

for PKS 5.2 :

set_global multiport_fix_buffer_const_nets true
foreach module [ find -modules -hierarchical ] {
set_top_timing_module $module
set_current_module $module
do_xform_fix_multiport_nets
}
set_top_timing_module $top_module
set_current_module $top_module

for PKS 4.2 or before version :

foreach module [ find -modules -hierarchical ] {
set_top_timing_module $module
set_current_module $module
do_xform_fix_multiport_nets -fix_constant_ports
}
set_top_timing_module $top_module
set_current_module $top_module
 

    omid219

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