Chapter 7
Autorouting and Autoplacement
7-16
ni.com
Routing Options: Bus Autorouting Tab
To autoroute buses, the topology for the nets, as set in the
Net edit
dialog
box, or the
Spreadsheet View
, must be set to either
Daisy chain
or
Star
and the nets must be part of a
Bus Group
as set in the
Edit Groups
dialog
box. You can also add new
Bus Groups
from the
Bus Autorouting
tab in
the
Routing Options
dialog box.
Complete the following steps to set Ultiboard bus routing options:
1.
Select the
Bus autorouting
tab in the
Routing Options
dialog box.
2.
Select the desired buses to route in the
Defined bus groups
area. Click
Select All
to select all available buses for routing or
Clear All
if you
wish to clear all of the checkboxes in the
Defined bus groups
area.
3.
If you wish to add or delete bus groups, or change a bus group’s
Assigned Nets
, click
Edit
. The
Bus Groups
tab of the
Edit Groups
dialog box appears where you can
Add
or
Delete
bus groups. You can
also change the nets assigned to a specific bus group from here by
selecting or de-selecting the group’s checkbox in the
Assign Nets
list.
4.
When you start autorouting, the buses are routed as in the following
example.
5.
If you wish to return the values to the default settings for Ultiboard,
click
Default
.
Caution
The
Default
button sets default values for all tabs in the
Routing Options
dialog
box.
