syn DC and verilog pullup/pulldown keyword

[Froed]

verilog pullup

Hi ho,

I have ap roblem with a entlist and DC 2001.8 under linux.

In the netlist, there are a few verilog statements with the keywords pullup and pulldown ( i,e, pullup (zero) ).

So, my DC cannot read in this. "pullup not supported by synthesis" or "error at or near token pullup" ( only one instantiated module with the name pullup. i.e.

module pulldown ( Z );
output Z;
zero I0 ( .Y(Z) );
endmodule




A DC of a collegue ( 2000.5 solaris ) has no problems with this keywords.

Is there any compiler switch or variable to avoid this error ???

 

[frankiboy]

verilog pull up

You cannot use pullup and pulldown in synthesis. If you have made your custom pullups/pulldowns you must name the modules somthing different because they are reserved keywords.

 

[Froed]

pulldown verilog

sorry, but i cant believe this

the 2000.5 solaris release of my collegue CAN handle this ( I know, that the sold tells, that this cannot be used )

But i got the modules written before from him and it works.
He instantiated the above modules and replaced the "pullup (one)" statement in the netlist wíth " pullup I1 (one) " and it works

so, i tested on linux and nt, are there any incompatibilities with the solaris version ``

 

[frankiboy]

verilog pulldown

Well, you better believe it...

DC2001.8 includes a new HDL compiler. There are several other things the new HDL compiler don't like.

I think you can switch back to the old HDL compiler by setting a variable in DC-shell. (I don't remember wich though...)

 

[Froed]

verilog pullup pulldown

ahhh, ok its versiondependent, that might be

I tried it a few minutes ago with 2000.5 on NT and it works *jipieh*

ok, i think the variable is something like "enable_unti ....."

thanks for the good ideas