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/open_hitter/trunk/bench/vhdl/search_control_wrapper.vhd
0,0 → 1,236
--////////////////////////////////////////////////////////////////////
--// ////
--// search_control_wrapper.vhd ////
--// ////
--// This file is part of the open_hitter opencores effort. ////
--// <http://www.opencores.org/cores/open_hitter/> ////
--// ////
--// Module Description: ////
--// Simulation program (non-synthesizable) ////
--// Drives auto regression tests via NSEW button actions and ////
--// NSEW LED reporting ////
--// target env: ghdl <attrib required> ////
--// ////
--// To Do: ////
--// ////
--// Author(s): ////
--// - Stephen Hawes ////
--// ////
--////////////////////////////////////////////////////////////////////
--// ////
--// Copyright (C) 2015 Stephen Hawes and OPENCORES.ORG ////
--// ////
--// 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 source file is free software; you can redistribute it ////
--// and/or modify it under the terms of the GNU Lesser General ////
--// Public License as published by the Free Software Foundation; ////
--// either version 2.1 of the License, or (at your option) any ////
--// later version. ////
--// ////
--// This source is distributed in the hope that it will be ////
--// useful, but WITHOUT ANY WARRANTY; without even the implied ////
--// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
--// PURPOSE. See the GNU Lesser General Public License for more ////
--// details. ////
--// ////
--// You should have received a copy of the GNU Lesser General ////
--// Public License along with this source; if not, download it ////
--// from <http://www.opencores.org/lgpl.shtml> ////
--// ////
--////////////////////////////////////////////////////////////////////
--//
--// \$Id\$ TAKE OUT THE \'s and this comment in order to get this to work
--//
--// CVS Revision History
--//
--// \$Log\$ TAKE OUT THE \'s and this comment in order to get this to work
--//
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.ALL;
use std.textio.all; -- Imports the standard textio package.
 
entity search_control_wrapper is
end search_control_wrapper;
 
architecture behaviour of search_control_wrapper is
component search_control is
generic ( searchitems : integer );
port (
RX_CLK: in std_logic;
-- control flag(s) on the incoming bus
search_px_valid_i: in std_logic;
-- pxdata: in price_packet
search_px_type_i: in std_logic_vector(4 downto 0);
search_buy_sell_i: in std_logic_vector(2 downto 0); -- 111 buy, 000 sell
search_px_i: in std_logic_vector(15 downto 0); -- price
search_qty_i: in std_logic_vector(15 downto 0); -- quantity
search_sec_i: in std_logic_vector(55 downto 0); -- 7x 8bits securities identifier
search_id_i: in std_logic_vector(15 downto 0); -- unique/identifier/counter
-- pxdata: out price_packet
order_px_type_o: out std_logic_vector(4 downto 0);
order_buy_sell_o: out std_logic_vector(2 downto 0); -- 111 buy, 000 sell
order_px_o: out std_logic_vector(15 downto 0); -- price
order_qty_o: out std_logic_vector(15 downto 0); -- quantity
order_sec_o: out std_logic_vector(55 downto 0); -- 7x 8bits securities identifier
order_id_o: out std_logic_vector(15 downto 0); -- unique/identifier/counter
-- control flag(s) on the outgoing bus
order_px_valid_o: out std_logic
);
end component;
for search_control_0: search_control use entity work.search_control;
signal RX_CLK: std_logic;
-- control flag(s) on the incoming bus
signal search_px_valid_i: std_logic;
-- pxdata: in price_packet
signal search_px_type_i: std_logic_vector(4 downto 0);
signal search_buy_sell_i: std_logic_vector(2 downto 0); -- 111 buy, 000 sell
signal search_px_i: std_logic_vector(15 downto 0); -- price
signal search_qty_i: std_logic_vector(15 downto 0); -- quantity
signal search_sec_i: std_logic_vector(55 downto 0); -- 7x 8bits securities identifier
signal search_id_i: std_logic_vector(15 downto 0); -- unique/identifier/counter
-- pxdata: out price_packet
signal order_px_type_o: std_logic_vector(4 downto 0);
signal order_buy_sell_o: std_logic_vector(2 downto 0); -- 111 buy, 000 sell
signal order_px_o: std_logic_vector(15 downto 0); -- price
signal order_qty_o: std_logic_vector(15 downto 0); -- quantity
signal order_sec_o: std_logic_vector(55 downto 0); -- 7x 8bits securities identifier
signal order_id_o: std_logic_vector(15 downto 0); -- unique/identifier/counter
begin
search_control_0: search_control
generic map ( searchitems => 3 )
port map (
RX_CLK => RX_CLK,
-- control flag(s) on the incoming bus
search_px_valid_i => search_px_valid_i,
-- pxdata: in price_packet
search_px_type_i => search_px_type_i,
search_buy_sell_i => search_buy_sell_i,
search_px_i => search_px_i,
search_qty_i => search_qty_i,
search_sec_i => search_sec_i,
search_id_i => search_id_i,
-- pxdata: out price_packet
order_px_type_o => order_px_type_o,
order_buy_sell_o => order_buy_sell_o,
order_px_o => order_px_o,
order_qty_o => order_qty_o,
order_sec_o => order_sec_o,
order_id_o => order_id_o
);
process
variable l : line;
 
type input_pattern_type is record
-- control flag(s) on the incoming bus
search_px_valid_i: std_logic;
-- pxdata: in price_packet
search_px_type_i: std_logic_vector(4 downto 0);
search_buy_sell_i: std_logic_vector(2 downto 0); -- 111 buy, 000 sell
search_px_i: std_logic_vector(15 downto 0); -- price
search_qty_i: std_logic_vector(15 downto 0); -- quantity
search_sec_i: std_logic_vector(55 downto 0); -- 7x 8bits securities identifier
-- search_id_i: std_logic_vector(15 downto 0); -- unique/identifier/counter
end record;
type output_pattern_type is record
-- pxdata: out price_packet
order_px_type_o: std_logic_vector(4 downto 0);
order_buy_sell_o: std_logic_vector(2 downto 0); -- 111 buy, 000 sell
order_px_o: std_logic_vector(15 downto 0); -- price
order_qty_o: std_logic_vector(15 downto 0); -- quantity
order_sec_o: std_logic_vector(55 downto 0); -- 7x 8bits securities identifier
order_id_o: std_logic_vector(15 downto 0); -- unique/identifier/counter
end record;
 
-- The patterns to apply.
constant zz_px: std_logic_vector(15 downto 0) := (others => 'Z');
constant zz_qty: std_logic_vector(15 downto 0) := (others => 'Z');
constant zz_sec: std_logic_vector(55 downto 0) := (others => 'Z');
constant zz_id: std_logic_vector(15 downto 0) := (others => 'Z');
constant set_qty: std_logic_vector(15 downto 0) := std_logic_vector'("0000000000010000");
constant test_px: std_logic_vector(15 downto 0) := std_logic_vector'("0000000011100000");
constant test_qty: std_logic_vector(15 downto 0) := std_logic_vector'("0000000000001100");
constant remain_qty: std_logic_vector(15 downto 0) := std_logic_vector'("0000000000000100");
constant test_sec0: std_logic_vector(55 downto 0) := std_logic_vector'(X"ABA544223478DC");
constant test_sec1: std_logic_vector(55 downto 0) := std_logic_vector'(X"ABA543332178DC");
constant test_sec2: std_logic_vector(55 downto 0) := std_logic_vector'(X"ABA234234378DC");
constant test_sec3: std_logic_vector(55 downto 0) := std_logic_vector'(X"ABA534534578DC");
constant test_id: std_logic_vector(15 downto 0) := std_logic_vector'("0110011001100110");
constant other_id: std_logic_vector(15 downto 0) := std_logic_vector'("0000010001100010");
constant other_px: std_logic_vector(15 downto 0) := std_logic_vector'("0000000000001110");
constant other_sec: std_logic_vector(55 downto 0) := std_logic_vector'(X"CDC423354634AA");
type input_pattern_array is array (natural range <>) of input_pattern_type;
constant input_patterns : input_pattern_array :=
( ('1', std_logic_vector'("00000"), std_logic_vector'("ZZZ"), zz_px, zz_qty, zz_sec), -- 0 reset
('0', std_logic_vector'("ZZZZZ"), std_logic_vector'("ZZZ"), zz_px, zz_qty, zz_sec), -- 1 nothing
('1', std_logic_vector'("01010"), std_logic_vector'("000"), test_px, set_qty, test_sec0), -- 2 sec/set
('1', std_logic_vector'("01010"), std_logic_vector'("000"), test_px, set_qty, test_sec1), -- 3 sec/set
('1', std_logic_vector'("01010"), std_logic_vector'("111"), test_px, set_qty, test_sec2), -- 4 sec/set
('1', std_logic_vector'("01010"), std_logic_vector'("000"), test_px, set_qty, test_sec3), -- 5 too many sec/set
('1', std_logic_vector'("11100"), std_logic_vector'("111"), test_px, test_qty, test_sec1), -- 6 incoming px
('1', std_logic_vector'("11100"), std_logic_vector'("111"), test_px, zz_qty, other_sec), -- 7 incoming px (wrong security)
('1', std_logic_vector'("11100"), std_logic_vector'("111"), other_px, test_qty, test_sec1), -- 8 incoming px (too low sale price)
('1', std_logic_vector'("11100"), std_logic_vector'("111"), test_px, test_qty, test_sec1) ); -- 9 incoming px (part qty)
type output_pattern_array is array (natural range <>) of output_pattern_type;
constant output_patterns : output_pattern_array :=
( (std_logic_vector'("ZZZZZ"), std_logic_vector'("ZZZ"), zz_px, zz_qty, zz_sec, zz_id), -- 0 reset
(std_logic_vector'("ZZZZZ"), std_logic_vector'("ZZZ"), zz_px, zz_qty, zz_sec, zz_id), -- 1 nothing
(std_logic_vector'("01010"), std_logic_vector'("ZZZ"), zz_px, zz_qty, zz_sec, std_logic_vector'(X"0001")), -- 2 sec/set
(std_logic_vector'("01010"), std_logic_vector'("ZZZ"), zz_px, zz_qty, zz_sec, std_logic_vector'(X"0002")), -- 3 sec/set
(std_logic_vector'("01010"), std_logic_vector'("ZZZ"), zz_px, zz_qty, zz_sec, std_logic_vector'(X"0003")), -- 4 sec/set
(std_logic_vector'("ZZZZZ"), std_logic_vector'("ZZZ"), zz_px, zz_qty, zz_sec, zz_id), -- 5 bad sec/set (too many)
(std_logic_vector'("11100"), std_logic_vector'("000"), test_px, test_qty, test_sec1, test_id), -- 6 incoming px
(std_logic_vector'("ZZZZZ"), std_logic_vector'("ZZZ"), zz_px, zz_qty, zz_sec, zz_id), -- 7 incoming px (wrong security)
(std_logic_vector'("11101"), std_logic_vector'("ZZZ"), zz_px, zz_qty, zz_sec, zz_id), -- 8 incoming px (too low sale price)
(std_logic_vector'("11100"), std_logic_vector'("000"), test_px, remain_qty, test_sec1, test_id) ); -- 9 incoming px (part qty)
 
begin
write (l, String'("Exercising search_control"));
writeline (output, l);
RX_CLK <= '0';
wait for 1 ns;
 
-- Check each pattern.
for i in input_patterns'range loop
-- Set the inputs.
search_px_valid_i <= input_patterns(i).search_px_valid_i;
search_px_type_i <= input_patterns(i).search_px_type_i;
search_buy_sell_i <= input_patterns(i).search_buy_sell_i;
search_px_i <= input_patterns(i).search_px_i;
search_qty_i <= input_patterns(i).search_qty_i;
search_sec_i <= input_patterns(i).search_sec_i;
--search_id_i <= input_patterns(i).search_id_i;
-- Clock once for the results.
RX_CLK <= '1';
wait for 1 ns;
-- Check the outputs.
write(l, i);
writeline (output, l);
assert order_px_type_o = output_patterns(i).order_px_type_o report "search_item_wrapper: bad px type" severity error;
assert order_buy_sell_o = output_patterns(i).order_buy_sell_o report "search_item_wrapper: bad buy_sell" severity error;
assert order_px_o = output_patterns(i).order_px_o report "search_item_wrapper: bad px" severity error;
assert order_qty_o = output_patterns(i).order_qty_o report "search_item_wrapper: bad qty" severity error;
assert order_sec_o = output_patterns(i).order_sec_o report "search_item_wrapper: bad sec" severity error;
assert order_id_o = output_patterns(i).order_id_o report "search_item_wrapper: bad id" severity error;
-- Clock down.
RX_CLK <= '0';
wait for 1 ns;
search_px_valid_i <= '0';
RX_CLK <= '1';
wait for 1 ns;
RX_CLK <= '0';
wait for 1 ns;
end loop;
-- assert false report "end of test" severity note;
write (l, String'("Done search_control"));
writeline (output, l);
 
wait;
end process;
end behaviour;
 
/open_hitter/trunk/bench/vhdl/build.sh
8,6 → 8,7
ghdl -a ../../sim/rtl_sim/src/parse_price_sim.vhd
ghdl -a ../../sim/rtl_sim/src/hitter_sim.vhd
ghdl -a search_item_wrapper.vhd
ghdl -a search_control_wrapper.vhd
ghdl -a parse_price_wrapper.vhd
ghdl -a hitter_wrapper.vhd
 
25,4 → 26,7
#ghdl -r hitter_wrapper
 
ghdl -e search_item_wrapper
ghdl -r search_item_wrapper
#ghdl -r search_item_wrapper
 
ghdl -e search_control_wrapper
ghdl -r search_control_wrapper
/open_hitter/trunk/rtl/vhdl/search_control.vhd
0,0 → 1,255
--////////////////////////////////////////////////////////////////////
--// ////
--// search_control.vhd ////
--// ////
--// This file is part of the open_hitter opencores effort. ////
--// <http://www.opencores.org/cores/open_hitter/> ////
--// ////
--// Module Description: ////
--// This is the multipelexed search's control item, used to set ////
--// up, access and control the search. ////
--// search_*_i - input to search_control ////
--// order_*_o - output from search_control ////
--// Buses perform the multiplex and are experienced by each item ////
--// as b1_* - set by search_control, input to search_item ////
--// b2_* - output from search_item, read by search_control ////
--// The state machine in search_control coordinates the search, ////
--// and the number of transitions is dependant on the incoming ////
--// instruction (search_*_i). ////
--// ////
--// To Do: ////
--// ////
--// Author(s): ////
--// - Stephen Hawes ////
--// ////
--////////////////////////////////////////////////////////////////////
--// ////
--// Copyright (C) 2015 Stephen Hawes and OPENCORES.ORG ////
--// ////
--// 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 source file is free software; you can redistribute it ////
--// and/or modify it under the terms of the GNU Lesser General ////
--// Public License as published by the Free Software Foundation; ////
--// either version 2.1 of the License, or (at your option) any ////
--// later version. ////
--// ////
--// This source is distributed in the hope that it will be ////
--// useful, but WITHOUT ANY WARRANTY; without even the implied ////
--// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
--// PURPOSE. See the GNU Lesser General Public License for more ////
--// details. ////
--// ////
--// You should have received a copy of the GNU Lesser General ////
--// Public License along with this source; if not, download it ////
--// from <http://www.opencores.org/lgpl.shtml> ////
--// ////
--////////////////////////////////////////////////////////////////////
--//
--// \$Id\$ TAKE OUT THE \'s and this comment in order to get this to work
--//
--// CVS Revision History
--//
--// \$Log\$ TAKE OUT THE \'s and this comment in order to get this to work
--//
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.ALL;
 
entity search_control is
generic ( searchitems : integer );
port (
RX_CLK: in std_logic;
-- control flag(s) on the incoming bus
search_px_valid_i: in std_logic;
-- pxdata: in price_packet
search_px_type_i: in std_logic_vector(4 downto 0);
search_buy_sell_i: in std_logic_vector(2 downto 0); -- 111 buy, 000 sell
search_px_i: in std_logic_vector(15 downto 0); -- price
search_qty_i: in std_logic_vector(15 downto 0); -- quantity
search_sec_i: in std_logic_vector(55 downto 0); -- 7x 8bits securities identifier
search_id_i: in std_logic_vector(15 downto 0); -- unique/identifier/counter
-- pxdata: out price_packet
order_px_type_o: out std_logic_vector(4 downto 0);
order_buy_sell_o: out std_logic_vector(2 downto 0); -- 111 buy, 000 sell
order_px_o: out std_logic_vector(15 downto 0); -- price
order_qty_o: out std_logic_vector(15 downto 0); -- quantity
order_sec_o: out std_logic_vector(55 downto 0); -- 7x 8bits securities identifier
order_id_o: out std_logic_vector(15 downto 0); -- unique/identifier/counter
-- control flag(s) on the outgoing bus
order_px_valid_o: out std_logic
);
end search_control;
 
architecture search_control_implementation of search_control is
component search_item
generic ( item_id: std_logic_vector(15 downto 0) );
port (
RX_CLK: in std_logic;
-- control flag(s) on the incoming bus
b1_px_valid: in std_logic;
-- pxdata: in price_packet
b1_px_type: in std_logic_vector(4 downto 0);
b1_buy_sell: in std_logic_vector(2 downto 0); -- 111 buy, 000 sell
b1_px: in std_logic_vector(15 downto 0); -- price
b1_qty: in std_logic_vector(15 downto 0); -- quantity
b1_sec: in std_logic_vector(55 downto 0); -- 7x 8bits securities identifier
b1_id: in std_logic_vector(15 downto 0); -- unique/identifier/counter
-- pxdata: out price_packet
b2_px_type: out std_logic_vector(4 downto 0);
b2_buy_sell: out std_logic_vector(2 downto 0); -- 111 buy, 000 sell
b2_px: out std_logic_vector(15 downto 0); -- price
b2_qty: out std_logic_vector(15 downto 0); -- quantity
b2_sec: out std_logic_vector(55 downto 0); -- 7x 8bits securities identifier
b2_id: out std_logic_vector(15 downto 0) -- unique/identifier/counter
);
end component;
-- for search_item_0: search_item use entity work.search_item;
--
signal state : integer range 0 to 16 := 16;
-- pxdata: store price_packet
signal store_px_type: std_logic_vector(4 downto 0) := (others => '0');
signal store_buy_sell: std_logic_vector(2 downto 0) := (others => '0'); -- 111 buy, 000 sell
signal store_px: std_logic_vector(15 downto 0) := (others => '0'); -- price
signal store_qty: std_logic_vector(15 downto 0) := (others => '0'); -- quantity
signal store_sec: std_logic_vector(55 downto 0) := (others => '0'); -- 7x 8bits securities identifier
signal store_id: std_logic_vector(15 downto 0) := (others => '0'); -- unique/identifier/counter
-- control flag(s) on the incoming bus
signal b1_px_valid: std_logic;
-- pxdata: b1 price_packet
signal b1_px_type: std_logic_vector(4 downto 0) := (others => '0');
signal b1_buy_sell: std_logic_vector(2 downto 0) := (others => '0'); -- 111 buy, 000 sell
signal b1_px: std_logic_vector(15 downto 0) := (others => '0'); -- price
signal b1_qty: std_logic_vector(15 downto 0) := (others => '0'); -- quantity
signal b1_sec: std_logic_vector(55 downto 0) := (others => '0'); -- 7x 8bits securities identifier
signal b1_id: std_logic_vector(15 downto 0) := (others => '0'); -- unique/identifier/counter
-- pxdata: b2 price_packet
signal b2_px_type: std_logic_vector(4 downto 0) := (others => '0');
signal b2_buy_sell: std_logic_vector(2 downto 0) := (others => '0'); -- 111 buy, 000 sell
signal b2_px: std_logic_vector(15 downto 0) := (others => '0'); -- price
signal b2_qty: std_logic_vector(15 downto 0) := (others => '0'); -- quantity
signal b2_sec: std_logic_vector(55 downto 0) := (others => '0'); -- 7x 8bits securities identifier
signal b2_id: std_logic_vector(15 downto 0) := (others => '0'); -- unique/identifier/counter
begin
items_array : for iter_id in 0 to searchitems - 1 generate
begin
cell_item : entity work.search_item
generic map ( item_id => std_logic_vector(to_unsigned(iter_id,16)) )
port map (
RX_CLK => RX_CLK,
b1_px_valid => b1_px_valid,
b1_px_type => b1_px_type, b1_buy_sell => b1_buy_sell, b1_px => b1_px, b1_qty => b1_qty, b1_sec => b1_sec, b1_id => b2_id,
b2_px_type => b2_px_type, b2_buy_sell => b2_buy_sell, b2_px => b2_px, b2_qty => b2_qty, b2_sec => b2_sec, b2_id => b2_id
);
end generate items_array;
match: process (RX_CLK) is
begin
if rising_edge(RX_CLK) then
if search_px_valid_i = '1' then
 
if search_px_type_i = std_logic_vector'("00000") then
-- do reset store and outputs
store_px_type <= (others => '0');
store_buy_sell <= (others => '0'); -- 111 buy, 000 sell
store_px <= (others => '0'); -- price
store_qty <= (others => '0'); -- quantity
store_sec <= (others => '0'); -- 7x 8bits securities identifier
-- not reset / generic store_id <= (others => '0'); -- unique/identifier/counter
--
b2_px_type <= (others => 'Z');
b2_buy_sell <= (others => 'Z'); -- 111 buy, 000 sell
b2_px <= (others => 'Z'); -- price
b2_qty <= (others => 'Z'); -- quantity
b2_sec <= (others => 'Z'); -- 7x 8bits securities identifier
b2_id <= (others => 'Z'); -- unique/identifier/counter
--
b2_px_type <= std_logic_vector'(std_logic_vector'("00000"));
state <= 8;
 
elsif search_px_type_i = std_logic_vector'("00110") then
-- do set store from incoming price
store_px_type <= b1_px_type;
store_buy_sell <= b1_buy_sell;
store_px <= b1_px;
store_qty <= b1_qty;
store_sec <= b1_sec;
store_id <= b1_id;
--
b2_px_type <= std_logic_vector'(std_logic_vector'("00000"));
state <= 8;
 
elsif search_px_type_i = std_logic_vector'("00101") then
-- incoming price, register it and start the state machine
if (store_sec /= b1_sec or store_buy_sell = b1_buy_sell or store_px_type /= std_logic_vector'(std_logic_vector'("0110")) ) then
-- not this store_item instance no action, also stop anything that might be going on
state <= 14;
elsif (to_integer(unsigned(store_qty)) = 0 or to_integer(unsigned(b1_qty)) = 0 or
(store_buy_sell = std_logic_vector'("111") and store_px < b1_px) or
(store_buy_sell = std_logic_vector'("000") and store_px > b1_px) ) then
-- no deal: this is the correct store_item but there's no match
b2_px_type <= std_logic_vector'(std_logic_vector'("00000"));
state <= 8;
else
-- send a return order
b2_px_type <= std_logic_vector'("1010");
b2_buy_sell <= store_buy_sell; -- 111 buy, 000 sell
b2_px <= b1_px; -- price
-- b2_qty <=
if b1_qty < store_qty then
b2_qty <= b1_qty;
else
b2_qty <= store_qty;
end if; -- quantity
b2_sec <= store_sec; -- 7x 8bits securities identifier
b2_id <= store_id; -- unique/identifier/counter
-- update the store
-- store_qty
if (b1_qty < store_qty) then
store_qty <= std_logic_vector(to_unsigned( to_integer(unsigned(store_qty)) - to_integer(unsigned(b1_qty)) ,16 ));
else
store_qty <= (others => '0');
state <= 1;
end if;
end if;
 
else
-- no action
null;
end if; -- search_px_type
 
else -- search_px_valid_i
-- no incoming search_px_i so check for state machine actions
case state is
when 1 =>
-- sent return order, so clean up
b2_px_type <= (others => 'Z');
b2_buy_sell <= (others => 'Z'); -- 111 buy, 000 sell
b2_px <= (others => 'Z'); -- price
b2_qty <= (others => 'Z'); -- quantity
b2_sec <= (others => 'Z'); -- 7x 8bits securities identifier
b2_id <= (others => 'Z'); -- unique/identifier/counter
state <= 16;
 
when 8 =>
-- correct store_item but there was no match
b2_px_type <= std_logic_vector'("ZZZZZ");
state <= 16;
 
when others => null;
end case; -- state
if (state < 16) then
state <= state + 1;
end if;
 
end if; -- search_px_valid_i
end if;
end process match;
 
end search_control_implementation;
 

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