Re: [f-cpu] Shifter, like during the good old days ;p

[Michael Riepe <michael@stud.uni-hannover.de>]

On Sat, Nov 03, 2001 at 05:04:42PM -0500, nicO wrote:
> ------
> elaborate Shuffle64 -gate_clock
> Error: Can't determine type of aggregate or concat 
>         in routine rotate line 181 in file
> '/home/profelec/nboulay/perso/fcpu/shl/fcpu-shl-mr-20
> 011102/eu_shl/shuffle64.vhdl'

*argh* Synopsys caught me again :(
Here's a quick-and-dirty fix that should work:

======= chainsaw =======
Index: f-cpu/eu_shl/shuffle64.vhdl
===================================================================
RCS file: /home/michael/cvsroot/f-cpu/eu_shl/shuffle64.vhdl,v
retrieving revision 1.8
diff -u -r1.8 shuffle64.vhdl
--- shuffle64.vhdl	2001/11/02 20:07:45	1.8
+++ shuffle64.vhdl	2001/11/03 17:18:08
@@ -148,6 +148,7 @@
 		alias uu : std_ulogic_vector(U'length-1 downto 0) is U;
 		variable yy : std_ulogic_vector(w-1 downto 0);
 		variable xx : std_ulogic_vector(w/2-1 downto 0);
+		variable xt : std_ulogic_vector(w/2-1 downto 0);
 		variable cc : std_ulogic_vector(5 downto 0);
 		variable t : std_ulogic;
 	begin
@@ -178,7 +179,8 @@
 				xx := bit_reverse(xx);
 			end if;
 			if i >= 3 then
-				xx := xx and (w/2-1 downto 0 => uu(i-3));
+				xt := (others => uu(i-3));
+				xx := xx and xt;
 			end if;
 			yy := omega_1(yy, xx);
 		end loop;
======= chainsaw =======

-- 
 Michael "Tired" Riepe <Michael.Riepe@stud.uni-hannover.de>
 "All I wanna do is have a little fun before I die"
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