AR #32388 - 10.1 ChipScope Coregen - ERROR:PhysDesignRules:10 / WARNING:PhysDesignRules:10 - The network <CONTROL<2>> is completely unrouted.

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10.1 ChipScope Coregen - ERROR:PhysDesignRules:10 / WARNING:PhysDesignRules:10 - The network <CONTROL<2>> is completely unrouted.

AR#	32388
Part	SW-Chipscope Pro
Last Modified	2009-04-16 00:00:00.0
Status	Active
Keywords	Bitgen, DRC, FPGA Editor, ICON, ILA, ATC2, LogiCORE

Description

Keywords: Bitgen, DRC, FPGA Editor, ICON, ILA, ATC2, LogiCORE

When I have ChipScope Cores in my design, I see the Design Rule Errors with the CONTROL bus in FPGA Editor or Bitgen.

FPGA Editor
WARNING:PhysDesignRules:10 - The network <CONTROL<2>> is completely unrouted.

Bitgen
ERROR:PhysDesignRules:10 - The network <CONTROL<2>> is completely unrouted.

How do I work around this issue?

Solution

This is related to how XST handles the Bidirectional CONTROL bus. To work around this issue, use the following Implementation options:

XST
-keep_hierarchy No
-read_cores No

NGDBUILD
Remove the -insert_keep_hierarchy option.