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Mark net is not tracing

maven7783
Hi, Mark net is not working in my IC6.1. when i select a particular net ...mark net is highlighting all the nets... thanks, maven
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  • Maven,

    It is working, just working more than you want it to ;-)

    It will be using the currently active validVias constraint in the constraint group defined in Options->Editor (in the Wire Editing section). If the validVias includes the contact layer, it will connect from metal1 down into diffusion and hence under the transistor and up the other side (remember that mark net simply looks at the shapes - it doesn't have much intelligence).

    You can stop this either by picking a constraint group which doesn't traverse into the diffusion/active/oxide/OD layer in the validVias/validLayers constraints, or by hitting F3 once you start Mark Net, and changing the "Via Layers used by Mark Net" to "Select Via Layers" and disabling the contact between the diffusion and metal1.

    Regards,

    Andrew.

Reply

  • Maven,

    It is working, just working more than you want it to ;-)

    It will be using the currently active validVias constraint in the constraint group defined in Options->Editor (in the Wire Editing section). If the validVias includes the contact layer, it will connect from metal1 down into diffusion and hence under the transistor and up the other side (remember that mark net simply looks at the shapes - it doesn't have much intelligence).

    You can stop this either by picking a constraint group which doesn't traverse into the diffusion/active/oxide/OD layer in the validVias/validLayers constraints, or by hitting F3 once you start Mark Net, and changing the "Via Layers used by Mark Net" to "Select Via Layers" and disabling the contact between the diffusion and metal1.

    Regards,

    Andrew.

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