README for  KCM_VGEN   version 1.21
-----------------------------------

Archive contents:
 
  readme.txt    --  this readme file

  kcm_vgen4.pdf  --  datasheet for this application

  Kcm_vgen.exe* --  executable

  kcm12c.kcm*   --  data files
  kcm12r.kcm*
  kcm16c.kcm*
  kcm16r.kcm*
  kcm20r.kcm*
  kcm8c.kcm*
  kcm8r.kcm*
  


Introduction
------------

KCM_VGEN is a simple DOS-based utility program to aid in the implementation of 
Constant(k) Coefficient Multipliers for the Virtex product from Xilinx.

This particular version is only capable of generating 8x8, 12x12, 16x16 
and 20x20 KCM macros with the options of signed/unsigned inputs and 
combinatorial/pipelined datapath.

All macros are produced in the form of an EDIF netlist (file extension '.edn')
which contains RPM (Relative Placement Macro) information resulting in a pre-
defined shape, size, and performance. The information is displayed following 
the generation of the macro and in this text file.

Installation
------------
Create a separate directory for this application and extract the 
contents of this archive to that location. 

Next, open up a DOS window (select Start/Programs/Command Prompt 
in Windows) and navigate to the KCM_VGEN directory.  From there, type 
'kcm_vgen'.  

The author recommends that the EDN netlists for the desired multipliers 
be created in this directory.  They can then be manually copied over 
to the user's project directory.

Please note that KCM_VGEN is a tactical solution only, and not an officially 
supported Xilinx product. No part of the supplied code or files should be altered 
or adapted in any way to perform a different task without the express permission 
of the author.


Xilinx
4/9/99