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Chapter 7
Autorouting and Autoplacement
© National Instruments Corporation
7-9
To perform a full autoroute, choose Autoroute»Start/Resume 
Autorouter
Ultiboard begins routing your board and displays its progress in the status 
line. When the process is complete the results are displayed in the Results 
tab of the Spreadsheet View
Interactivity
Ultiboard provides complete interactivity, letting you stop the routing 
process as desired to manually place items and then continue autorouting 
when ready. 
To stop autorouting, select Autoroute»Stop/Pause Autorouter
To restart, select Autoroute»Start Autoplacement
Autorouting buses
The circuit shown below is used in this example. Bus 1 consists of the five 
nets that connect the two ICs. 
 
Note
To autoroute buses, the topology for the nets, as set in the Net edit dialog box, must 
be set to either Daisy chain
 
or Star and the nets must be part of a Bus Group (in the 
Groups tab of the Net edit dialog box). Refer to th
 section of 
, for more information.