gEDA-user: Getting symbols from ASIC libraries into gschem: one approach

John Griessen john at ecosensory.com
Tue Jun 12 18:24:11 EDT 2007


Jeff Trull wrote:
> If by "fancy" you mean "containing arcs", it's quite a few - or/nor,xor/xnor, 
> and all the ao/oa combinations with their different sizes.

Oh, yes.  It's been awhile since I've dealt with ASIC cells.   One forgets 5 input NORs
exist as design elements when making boards...  So you want all the NOR and NAND gate symbols we are used to
for making schematics.  Once your customer has gschem schematics, will they keep those as their top level
docs, or pipe it back into Cadence/Synopsys somehow for "pre tapeout"  double checking, LVS, timing, test program writing?

John Griessen


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