Hi, I would like to use ETAS to caracterize a cell but I have some problems with the formats. For example, is I ask for the critical path of a cell (this is for na2_y) I obtain: 1 : M i1 f DU MAX TP = 783 ps RC = 218 ps I understand that 783 ps is the internal delay and RC is the delay due to the output load, but I am not sure is this 218 ps are ps/pF or if a value is assumed for the output load. I have looked at the man pages, but I haven't found it. Also the man pages of ttv and dtv are not complete in this sense and ttx and dtx man pages are missing. Where can I found any extra information about all this timing issues? Thanks in advance, Rosa PS: I have been using alliance for my VLSI courses for some years and I find it very useful, so I encourage you to continue with this good work. ------------------------------------------------------------------------ Rosa M. Badia Sala Dept. Computer Architecture Universitat Politecnica Catalunya Campus Nord - Modul D6 c/Jordi Girona 1-3 E08034 - Barcelona T. +34 - 3 - 4017191 ------------------------------------------------------------------------