I see three mistakes .. one is in the documentation, one yours, and one is something with the program that really should be changed.
The documentation mistake ... You need to do "-b" for batch mode. Without "-b" it loads the file for interactive operation. > $ gnucap opamp-vf.ckt should be .. > $ gnucap -b opamp-vf.ckt Your mistake.... > .plot ac vdb(6) (-90,30) vp(6) (-180,180) > .ac dec 5 1 10meg >opamp-vf.dat .plot gives you an ascii plot. You need .print should be.. > .print ac vdb(6) vp(6) > .ac dec 5 1 10meg >opamp-vf.dat In a print statement, the ranges don't do anything, so you can leave them out. Now .. "something with the program that really should be changed" .... The whole built-in plot code is rather old, part of the original C, translated from ratfor, that still lingers and needs to be done over or removed. The interaction with some changes since then sometimes produces some strange results. So, you got an empty file, because there was no ".print" statement. The tutorial was last updated 1999. It is actually older than that. That is why it still says "acs-tutorial" instead of "gnucap-tutorial". _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
