User Guide

Logfile
For each routing pass the Autorouter generates a file called name.pro,
containingusefulinformation.
Example:
EAGLE AutoRouter Statistics:
Job : d:/eagle4/test-design/democpu.brd
Start at : 15.43.18 (24.07.2000)
End at : 16.17.08 (24.07.2000)
E
lapsed time : 00.33.48
Signals : 84 RoutingGrid: 10 mil Layers: 4
Connections : 238 predefined: 0 ( 0 Vias )
Router memory : 1121760
Passname: Busses Route Optimize1 Optimize2 Optimize3 Optimize4
Time per pass: 00.00.21 00.08.44 00.06.32 00.06.15 00.06.01 00.05.55
Number of Ripups: 0 32 0 0 0 0
max. Level: 0 1 0 0 0 0
max. Total: 0 31 0 0 0 0
Routed: 16 238 238 238 238 238
Vias: 0 338 178 140 134 128
Resolution: 6.7 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 %
Final: 100.0% finished
7.11 Parametersofa ControlFile
We see here how the individual parameters in an Autorouter control file
(name.ctl)areused.
ParameterDefaultMeaning
RoutingGrid=50MilGridusedbytheAutorouterfortracksand
via-holes
Costfactorsfor...
cfVia=8...Vias
cfNonPref=5...Notusingpreferreddirection
cfChangeDir=2...Changingdirection
cfOrthStep=2...0or90deg.step
cfDiagStep=3...45or135deg.step
cfExtdStep=30...Deviation45deg.againstpreferreddirection
cfBonusStep=1...Stepinbonusarea
cfMalusStep=1...Stepinhandicaparea
cfPadImpact=4...Padinfluenceonsurroundingarea
cfSmdImpact=4...SMDinfluenceonsurroundingarea
cfBusImpact=4...Leavingidealbusdirection
cfHugging=3...Wirehugging
cfAvoid=4...Previouslyusedareasduringripup
cfPolygon=10...Avoidingpolygons
cfBase.1=0Basiccostsforastepinthegivenlayer
cfBase.2=1
...
cfBase.15=1
cfBase.16=0
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TheAutorouter