zhong
Community Member
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Posts: 36
California , United States
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Pavel, Even you use the GUI flow. The symbol is not a mandatory for TEXT view. HED hier tree does not requires for symbol . The hier tree is based on the pc.db file under module view not symbol .
However you can use symbol view to build up the schematic or go with verilogIn to create a schematic.
Basically Symbol is a MUST for schematic build up but this is NOT a must requirement in HED because HED can handle text view call text without schematic in between.
Here is the examples top level top cell module view middle leve - middle cell l verilogams view lower level -- cell A schematic leaf level -- cell x, y ,z
You dont need any symbol for top/middel and cell A . Of course you need the symbol to represent the sub block x/y/z to build schematic of cell A.
top level schematic -- top cell middle level -- middle cell verilogams leaf cell - cell B verilogams
You need to have middle cell symbol because this is a must for built-up of top cell schematic , But you dont neecd to the cell B symbol , text view instantiate text view does not requires symbol for the hier build-up
I am doing this in my daily work and it works perfectly. As I said, what you need to do is to add the text view lib in the HED lib list.
Of course , if you choose to always use symobl, that's fine . But it' does not necessary means it's a must .
Hope this helps ...
Zhong
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