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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "">
+ <herd>sci-electronics</herd>
+ <longdescription>
+ IRSIM is a tool for simulating digital circuits. It is a "switch-level"
+ simulator; that is, it treats transistors as ideal switches. Extracted
+ capacitance and lumped resistance values are used to make the switch a
+ little bit more realistic than the ideal, using the RC time constants
+ to predict the relative timing of events.
+ </longdescription>