head     1.1;
branch   1.1.1;
access   ;
symbols  vlsi:1.1.1.1 marta:1.1.1;
locks    ; strict;
comment  @# @;


1.1
date     2002.02.09.13.46.53;  author marta;  state Exp;
branches 1.1.1.1;
next     ;

1.1.1.1
date     2002.02.09.13.46.53;  author marta;  state Exp;
branches ;
next     ;


desc
@@



1.1
log
@Initial revision
@
text
@-- VHDL data flow description generated from `count3x`
--		date : Thu Aug  2 09:52:58 2001


-- Entity Declaration

ENTITY count3x IS
  PORT (
  clk : in BIT;	-- clk
  rst : in BIT;	-- rst
  q : out bit_vector(2 DOWNTO 0) ;	-- q
  vdd : in BIT;	-- vdd
  vss : in BIT	-- vss
  );
END count3x;


-- Architecture Declaration

ARCHITECTURE VBE OF count3x IS
  SIGNAL current_state : REG_VECTOR(2 DOWNTO 0) REGISTER;	-- current_state
  SIGNAL current_state_s7 : BIT;		-- current_state_s7
  SIGNAL next_state_s7 : BIT;		-- next_state_s7
  SIGNAL current_state_s6 : BIT;		-- current_state_s6
  SIGNAL next_state_s6 : BIT;		-- next_state_s6
  SIGNAL current_state_s5 : BIT;		-- current_state_s5
  SIGNAL next_state_s5 : BIT;		-- next_state_s5
  SIGNAL current_state_s4 : BIT;		-- current_state_s4
  SIGNAL next_state_s4 : BIT;		-- next_state_s4
  SIGNAL current_state_s3 : BIT;		-- current_state_s3
  SIGNAL next_state_s3 : BIT;		-- next_state_s3
  SIGNAL current_state_s2 : BIT;		-- current_state_s2
  SIGNAL next_state_s2 : BIT;		-- next_state_s2
  SIGNAL current_state_s1 : BIT;		-- current_state_s1
  SIGNAL next_state_s1 : BIT;		-- next_state_s1
  SIGNAL current_state_s0 : BIT;		-- current_state_s0
  SIGNAL next_state_s0 : BIT;		-- next_state_s0
  SIGNAL next_state : BIT_VECTOR(2 DOWNTO 0);	-- next_state

BEGIN
  next_state(0) <= (next_state_s0 OR next_state_s1 OR next_state_s2 
OR next_state_s5);
  next_state(1) <= (next_state_s1 OR next_state_s2 OR next_state_s3 
OR next_state_s4);
  next_state(2) <= (next_state_s0 OR next_state_s2 OR next_state_s4 
OR next_state_s6);
  next_state_s0 <= current_state_s7;
  current_state_s0 <= (current_state(2) AND NOT(current_state(1)) AND 
current_state(0));
  next_state_s1 <= current_state_s0;
  current_state_s1 <= (NOT(current_state(2)) AND current_state(1) AND 
current_state(0));
  next_state_s2 <= current_state_s1;
  current_state_s2 <= (current_state(2) AND current_state(1) AND 
current_state(0));
  next_state_s3 <= current_state_s2;
  current_state_s3 <= (NOT(current_state(2)) AND current_state(1) AND 
NOT(current_state(0)));
  next_state_s4 <= current_state_s3;
  current_state_s4 <= (current_state(2) AND current_state(1) AND NOT(
current_state(0)));
  next_state_s5 <= current_state_s4;
  current_state_s5 <= (NOT(current_state(2)) AND NOT(current_state(1)) 
AND current_state(0));
  next_state_s6 <= current_state_s5;
  current_state_s6 <= (current_state(2) AND NOT(current_state(1)) AND 
NOT(current_state(0)));
  next_state_s7 <= current_state_s6;
  current_state_s7 <= (NOT(current_state(2)) AND NOT(current_state(1)) 
AND NOT(current_state(0)));
  label0 : BLOCK ((NOT((clk'STABLE)) AND clk) = '1')
  BEGIN
    current_state(0) <= GUARDED (next_state(0) OR rst);
  END BLOCK label0;
  label1 : BLOCK ((NOT((clk'STABLE)) AND clk) = '1')
  BEGIN
    current_state(1) <= GUARDED (next_state(1) AND NOT(rst));
  END BLOCK label1;
  label2 : BLOCK ((NOT((clk'STABLE)) AND clk) = '1')
  BEGIN
    current_state(2) <= GUARDED (next_state(2) OR rst);
  END BLOCK label2;

q(0) <= ((current_state_s1 AND NOT(rst)) OR (
current_state_s3 AND NOT(rst)) OR (current_state_s5 AND NOT(rst))
 OR (current_state_s7 AND NOT(rst)));

q(1) <= ((current_state_s2 AND NOT(rst)) OR (
current_state_s3 AND NOT(rst)) OR (current_state_s6 AND NOT(rst))
 OR (current_state_s7 AND NOT(rst)));

q(2) <= ((current_state_s4 AND NOT(rst)) OR (
current_state_s5 AND NOT(rst)) OR (current_state_s6 AND NOT(rst))
 OR (current_state_s7 AND NOT(rst)));
END;
@


1.1.1.1
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