There is a new development snapshot of gnucap available. Changes:
1. Autoconf based build system. (Thanks: Dan McMahill). The old build system is still available, by running "configure.old". 2. Changes to the transient analysis step control algorithm. The truncation error based control mode is very accurate now. It also uses the concept of an "ambiguous event", which is an event that is scheduled at an approximate time than can be moved. It also tries a little harder to keep the time step consistent. Some of the default options have been changed. 3. Changes to the switch model. It now assumes that there is a small delay after crossing a threshold before switching occurs. It is possible to bound this delay, so timing accuracy is significantly improved compared to the old algorithm. It also eliminates switch convergence problems in transient analysis. Issues still outstanding to be addressed before an official release: 1. BSIM3 charge effects. Part of it is turned off because it causes convergence problems. It is probably a simple error. Since the current state is an improvement over the last snapshot, and this is a development snapshot, I decided to release anyway. This issue applies to BSIM1 and BSIM2 also. 2. Autoconf based build system. It is there, but there are known bugs in it. 3. The manual does not include changes since 0.34, the last official release. 4. The step control algorithm sometimes misses on the second time step, due to a lack of information. If this is a problem, set the option "trstepgrow" to 2, which will apply the same hack that was done previously, at the expense of slower run time later. You can get it at: Official site: http://www.gnucap.org/devel/gnucap-2006-06-28.tar.gz Mirrors: http://www.geda.seul.org/dist/gnucap-2006-06-28.tar.gz _______________________________________________ Help-gnucap mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-gnucap
