So I open an existing .dsn in OrCAD Capture version 16.5 and proceed to make a PCB out of it. The OrCAD on my computer was a recent installation. The project and schematic are from 2 years ago.
Annotation seems to work:
INFO(ORCAP-1378): LAST USED REFERENCES [blah blah blah component references....]
INFO(ORCAP-1379): Done updating part references
Design Rules Check gives only a couple trivial warnings:
Checking Electrical Rules
WARNING(ORCAP-1829): Possible pin type conflict blah blah blah
Checking For Single Node Nets
Checking For Unconnected Bus Nets
WARNING(ORCAP-1595): Two wires/busses of different nets intersect visually, yet nets are not connected blah blah blah
Unfortunately, Create Netlist... produces about 80 of the following errors in the netlist.LOG:
Illegal character "Dot(.)" found in "PCB Footprint" property for component instance............................
Illegal character "Forward Slash(/)" found in "PCB Footprint" property for component instance..............................
Property "PCB Footprint" missing from instance.............................
Pin number missing from Pin "1" of Package..................................
#87 Info: PCB Editor does not support Dots(.), Forward Slash(/) and White space in footprint names. The supported characters include Alphabets, Numerics, Underscore(_) and Hyphen(-).
If I select all components in the schematic and look at Properties... the PCB Footprint column cells typically have content like this: RAD/.200X.100/LS.100/.031 or are blank. So, this is an example of the '.' and '/' that the netlist generator doesn't like.
Library Verification/Correction doesn't seem to do anything.
I can't Back Annotate because I don't seem to have any .SWP that it wants.
If I look at the properties of a component in the schematic OrCAD typically tells me ERROR(ORCAP-1733): Allegro footprint AX/.400X.100/.034 was not found in the search path.
If I go and Place Part, the design cache and DISCRETE.OLB libraries open. If I select a part from the DISCRETE library that doesn't exist in my design and place it and Edit Properties... the PCB Footprint is always blank, no matter what part or from what built-in library. And these are the built-in Cadence libraries and parts, NOT something I created myself. So how come Cadence removed the PCB footprints from all parts and rendered their product useless?
If I fill in the PCB Footprint cells with something acceptable to the netlist, OrCAD will go ahead and create a .brd file, but what Allegro shows is just empty space. If I try to Place parts, it complains it can't find the footprint specified in the Properties.
OK what am I doing wrong here?