X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=src%2Fpre_norm_sqrt.vhd;fp=src%2Fpre_norm_sqrt.vhd;h=1c8b725725b91dde86605460f646f683a33b3e1d;hb=bf561f5566c6e50af09f078b0773fd4abaff6281;hp=364260b52d005a5c0b2e9b0e7ee59cfe7d5d2d3b;hpb=ecbc325cc08fb2731d1fc820a87979b75b4306bc;p=ipdf%2Fvfpu.git

diff --git a/src/pre_norm_sqrt.vhd b/src/pre_norm_sqrt.vhd
index 364260b..1c8b725 100644
--- a/src/pre_norm_sqrt.vhd
+++ b/src/pre_norm_sqrt.vhd
@@ -1,46 +1,6 @@
 -------------------------------------------------------------------------------
---
--- Project:	<Floating Point Unit Core>
---  	
 -- Description: pre-normalization entity for the square-root unit
--------------------------------------------------------------------------------
---
---				100101011010011100100
---				110000111011100100000
---				100000111011000101101
---				100010111100101111001
---				110000111011101101001
---				010000001011101001010
---				110100111001001100001
---				110111010000001100111
---				110110111110001011101
---				101110110010111101000
---				100000010111000000000
---
--- 	Author:		 Jidan Al-eryani 
--- 	E-mail: 	 jidan@gmx.net
---
---  Copyright (C) 2006
---
---	This source file may be used and distributed without        
---	restriction provided that this copyright statement is not   
---	removed from the file and that any derivative work contains 
---	the original copyright notice and the associated disclaimer.
---                                                           
---		THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY     
---	EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED   
---	TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS   
---	FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR      
---	OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,         
---	INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES    
---	(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE   
---	GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR        
---	BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF  
---	LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT  
---	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT  
---	OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE         
---	POSSIBILITY OF SUCH DAMAGE. 
---
+-- See COPYRIGHT.jop
 
 library ieee ;
 use ieee.std_logic_1164.all;
@@ -73,11 +33,11 @@ signal s_opa_dn : std_logic;
 
 begin
 
-	s_expa <= opa_i(30 downto 23);
-	s_fracta <= opa_i(22 downto 0);
+	s_expa <= opa_i(FP_WIDTH-2 downto FRAC_WIDTH);
+	s_fracta <= opa_i(FRAC_WIDTH-1 downto 0);
 
 
-	exp_o <= s_exp_o(7 downto 0);
+	exp_o <= s_exp_o(EXP_WIDTH-1 downto 0);
 	fracta_52_o <= s_fracta_52_o;	
 
 	-- opa or opb is denormalized
@@ -95,7 +55,7 @@ begin
 	begin
 		if rising_edge(clk_i) then
 			if or_reduce(opa_i(30 downto 0))='1' then
-				s_exp_o <= ("0"&s_exp_tem(8 downto 1)); 
+				s_exp_o <= ("0"&s_exp_tem(EXP_WIDTH downto 1)); 
 			else 
 				s_exp_o <= "000000000";
 			end if;