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| XILINX APPLICATIONS NOTE XAPP022V-V1.00                    BN-4-1-94  |
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README file for the XC3000A Adder/Subtractor Macros:
====================================================

Note: A more detailed description of this application can be found in
Section 8 of the Xilinx Data Book.

Files included in XAPP022V.ZIP:
-------------------------------
  
  README          This readme file
  SYM\1ADDSUB.1   1-bit serial-adder macro
  SYM\2B-ADDER.1  2-bit serial-adder macro
  SYM\1RIPADD.1   1-bit ripple-adder macro
  SYM\2PIPADD.1   2-bit ripple-adder macro
  SYM\ADDER4B.1   4-bit fast-look-ahead adder macro
  SCH\            Schematic directory for the above macros   

This XAPP file contains all the macros necessary to construct the adders
described in XAPP022. They should be cascaded as described in the application 
note.

Software Versions used:

  DS390 Version 4.1.3a Viewlogic and Interface

