Answers Database

FLOORPLANNER 6.x: Cannot see STARTUP, READBACK, of BSCAN symbols in my foorplanner.


Record #2153

Product Family:  Software

Product Line:  FPGA Core

Problem Title:
FLOORPLANNER 6.x: Cannot see STARTUP, READBACK, of BSCAN symbols in my
foorplanner.



Problem Description:
Keywords:
Floorplanner, STARTUP, READBACK, BSCAN, ppr, router.

Urgency:
Standard

General Description:
In floorplanner, you will not be able to see some of the symbols you have placed
 in your design.

Also running PPR from Floorplanner may give you warnning such as this:

   "Warning: net ____ has no load ...."

Where the net is the input signal driving the pins of BSCAN, STARTUP or READBACK
.


Solution 1:

Symbols such as BSCAN, STARTUP and READBACK are special symbols that user can in
stantiate in the design to activate these features that are already available wi
thin the architecture.
These symbols are NOT physical components that user have control over in floorpl
anner.

Running Place and Route from Floorplanner will NOT connect signals to BSCAN, STA
RTUP or READBACK symbols and may trim out the logic related to these symbols.
Place and Route from Floorplanner should be used ONLY to evaluate portions of th
e design.  Therefore, you will need to run final ppr from outside of floorplanne
r.




End of Record #2153