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Community PCB Design Allegro PCB Editor and PCB SKILL importing Netlist to allegro

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importing Netlist to allegro

xiaoyi
xiaoyi 3 months ago

Hi

There are errors when I import Netlist to allegro. The software version is 17.2.

ERROR: Schematic supports creating XNets for passive devices and for devices having XNET_PINS properties but the Layout will create XNets only for devices having XNET_PINS properties. Change setting in Layout or Schematic, re-generate files, and re-run the flow.

ERROR: Can't import electrical constraint data (pstcmdb.dat)

The Constraint Difference Report is shown in the figure below.

I don't know how to solve the problem.

Regards

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  • DavidJHutchins
    0 DavidJHutchins 3 months ago

    You may want to read the documentation for 'netrev' in $CDSROOT/share/pcb/batchhelp/netrev.txt

    Then try running netrev from a command line using the -o option with either the -1 or -2 additional option flags

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  • xiaoyi
    0 xiaoyi 3 months ago in reply to DavidJHutchins

    thank you for your replay. I find this file.If i use command line, the Constraint Difference Report may not be made.but error is that Schematic supports creating XNets for passive devices and for devices having XNET_PINS properties but the Layout will create XNets only for devices having XNET_PINS properties. Change setting in Layout or Schematic, re-generate files, and re-run the flow.

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  • Schulz Jordan
    0 Schulz Jordan 2 months ago in reply to xiaoyi

    Open the .cpm file in notepad & add the below lines & then generate netlist. When imported there shouldn't be any issue.

    START_CONSTRAINT_MGR
    AUTO_XNETS_USING_DML ‘OFF’
    AUTO_XNETS_USING_GATES ‘OFF’
    END_CONSTRAINT_MGR

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  • Schulz Jordan
    0 Schulz Jordan 2 months ago in reply to xiaoyi

    Open the .cpm file in notepad & add the below lines & then generate netlist. When imported there shouldn't be any issue.

    START_CONSTRAINT_MGR
    AUTO_XNETS_USING_DML ‘OFF’
    AUTO_XNETS_USING_GATES ‘OFF’
    END_CONSTRAINT_MGR

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  • andycolorful
    0 andycolorful 2 days ago in reply to Schulz Jordan

    @Schulz Jordan

    I have added the macro command in the CPM file, but the same error happened.

    this error happened when I Iset the pin pair constraints in the constraint manager. but the pin pair setting can not be saved in the constraint manager.

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