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Drawing Things (was Re: [f-c»¼½¾e a little sketch. > > It's good that you made the drawing! ;) > it's so rare, because it's usually so long to do ! > doing a hand drawing takes less than one minute, > a computer drawing is 100x slower. There is a tool called "graphviz" to draw in an easy way things like FSM, trees, flows and so on. (you are 100x faster than previous computer drawing ;-)) It uses a C-like (or tcl-like) syntax and places nodes and connections automatically in a right way. There are two subtools, "dot" - to draw directed graphs (trees, or FMS) and "neato" - to draw undirected graphs and weight them automatically These are very useful to make complex things easier to understand. Here a simple example (that draws a FSM-graph of a 2bit-counter): digraph zaehler { // 0 / 1 // E0: counter start/stop // in future: E2: ring/saturate // E1: forewards/backwards // creating nodes n1 [label="0"]; n2 [label="1"]; n3 [label="2"]; n4 [label="3"]; // forwards n1 -> n2 [label="E0=1\nE1=0"]; n2 -> n3 [label="E0=1\nE1=0"]; n3 -> n4 [label="E0=1\nE1=0"]; n4 -> n1 [label="E0=1\nE1=0"]; // backwards n1 -> n4 [label="E0=1\nE1=1"]; n2 -> n1 [label="E0=1\nE1=1"]; n3 -> n2 [label="E0=1\nE1=1"]; n4 -> n3 [label="E0=1\nE1=1"]; // E0 = 0, stop n1 -> n1 [label="E0=0"]; n2 -> n2 [label="E0=0"]; n3 -> n3 [label="E0=0"]; n4 -> n4 [label="E0=0"]; } If you want the graph as GIF or PS, do this: dot -Tps counter.dot > counter.ps or dot -Tgif counter.dot > counter.gif I hope that would help... Bye Andreas -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE7buMnClxplZklbgERAn2sAJ0UZAQ5OgUau+p4DY/uAysE3zS9owCcDSp4 0CZhXoX3kjBejdrV3iQGT88= =eaK8 -----END PGP SIGNATURE----- ************************************************************* To unsubscribe, send an e-mail to majordomo@seul.org with unsubscribe f-cpu in the body. http://f-cpu.seul.org/