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?
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.
| AR# 32388 | |
|---|---|
| Date | 12/15/2012 |
| Status | Active |
| Type | General Article |