On Sunday 08 April 2007 22:39, al davis wrote: > This one is a common error when moving from spice to gnucap. > Spice dumps everything in a bag , shakes it up, and > reorders as it wants. Gnucap does things in exactly the > order you ask.
A historical note ... This statement is true. The Spice dot-card format is based on cards. With cards, you just might dump your box. It doesn't matter. The format was invented around 1975, and has not been significantly updated. With gnucap, a long time ago (about 1989) I and others thought it made sense to build around and extend the spice format. That worked for a while, but it really doesn't make sense anymore. It's caught in the middle. Anyway .. For simple jobs ... Build the whole circuit. Do not embed commands inside the circuit. Attach the instrumentation. This is the .print, plot, probe commands. Then turn it on. This is the op, dc, tran, ac commands. In a real lab you check the operating point before you look at it with signals. With gnucap, you need to do that too, just like a real lab. For complex jobs .. You can intermingle if you do it for a good reason and know why you are doing it. Don't do this at the beginning. If you get to this point, you have outgrown spice. Read it like a set of sequential instructions. _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
