Answers Database

What do the Xs and @s mean in the Fitter report?


Record #2217

Product Family:  Software

Product Line:  CPLD Implementation

Problem Title:
What do the Xs and @s mean in the Fitter report?


Problem Description:
Keywords: @, rpt, 9500, fitter, report file, syntax

Urgency: Standard

The 9500 report file contains a section for each Function block
including the signals used by the function blocks.

This section consists of a grid containing Xs and @s
What do these characters mean?


Solution 1:

Both X and @ indicate that the MC output signal uses the input
signal coresponding to the grid location.

X- Indicates an input signal which used one of the the 36 standard
   Function block inputs from the Fast connect matrix.

@- Indicates an input signal which uses the wire-anding capability
   of the switch matrix in order to be routed to the Function Block.

In the example below, the signal "out" uses 32 inputs.	One of the
inputs, R20.PIN, uses the wire-and capability

Signals Used by Logic in Function Block
  1: D0 	      14: IN		   27: OUT_EN9	       40: num
  2: D9 	      15: NORM		   28: R20.PIN
   .			.		     .
   .			.		     .
   .
 13: EN 	      26: OUT		   39: R9.PIN

Signal			      1 	2	  3	    4 Signals FB
Name		    0----+----0----+----0----+----0----+----0 Used    Inputs
q1		     X...XX...XXXXXX.....XXX..X.............X 14       14
q2		     .X..X.X.................................  3	3
out		     XXXXXXXXX......XXXXXX.XXX.XXXXXXXXXXXX@X 32       31
BA9		     ..XX....X.....................XXXXXX@@X. 12       10
		    0----+----1----+----2----+----3----+----4



End of Record #2217