Editing Components on the fly

Use Setup>User Preferences...

Open Paths>Library

Change psmpath to have your scratch folder as the 1st entry

OK the form to save the change

Now Place>update symbols should be able to load the modified symbol

thanks David, that did the trick!

carl

can i ask one more dumb question? i have 4 0201's in this design that i want to increase to 0402. the 0402 footprint already exists in the layout. i only have the .brd file. is there an easy way to do this?

regards

carl

Not an easy way, but this is what I have done:

make a subdirectory called 'symbols', descend into it & run  'dump_libraries ../<your_design>.brd'

then edit the device file for the components you need to change & add the following entry:

PACKAGEPROP ALT_SYMBOLS '(<your_0402_symbol_name>)'

Save the text file

Then in Allegro use 'Tools>quick reports>Netin (non-back)'

Save the netlist as 'netlist.txt'

Close the netlist

Then in Allegro use 'File>Import>Logic/Netlist...'

Select the 'Other' tab & enter 'netlist.txt' as the file name

then pick 'Import'

Then delete then existing comps you want to change

Then use 'place manual' to replace them, switching to the alternate 0402 symbols

i've ran the dump_libraries command which produced a .dra and .psm file. 

i tried to nedit r0201.psm but it is a binary file