| Line 88... |
Line 88... |
signal store_id: std_logic_vector(15 downto 0) := (others => '0'); -- unique/identifier/counter
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signal store_id: std_logic_vector(15 downto 0) := (others => '0'); -- unique/identifier/counter
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begin
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begin
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match: process (RX_CLK) is
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match: process (RX_CLK) is
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begin
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begin
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if rising_edge(RX_CLK) then
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if rising_edge(RX_CLK) then
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if b1_px_valid = '0' then
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if b1_px_valid = '1' then
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|
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if b1_px_type = std_logic_vector'("0000") then
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if b1_px_type = std_logic_vector'("00000") then
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-- do reset store and outputs
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-- do reset store and outputs
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store_px_type <= (others => '0');
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store_px_type <= (others => '0');
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store_buy_sell <= (others => '0'); -- 111 buy, 000 sell
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store_buy_sell <= (others => '0'); -- 111 buy, 000 sell
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store_px <= (others => '0'); -- price
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store_px <= (others => '0'); -- price
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store_qty <= (others => '0'); -- quantity
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store_qty <= (others => '0'); -- quantity
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store_sec <= (others => '0'); -- 7x 8bits securities identifier
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store_sec <= (others => '0'); -- 7x 8bits securities identifier
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store_id <= (others => '0'); -- unique/identifier/counter
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-- not reset / generic store_id <= (others => '0'); -- unique/identifier/counter
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--
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--
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b2_px_type <= (others => 'Z');
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b2_px_type <= (others => 'Z');
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b2_buy_sell <= (others => 'Z'); -- 111 buy, 000 sell
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b2_buy_sell <= (others => 'Z'); -- 111 buy, 000 sell
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b2_px <= (others => 'Z'); -- price
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b2_px <= (others => 'Z'); -- price
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b2_qty <= (others => 'Z'); -- quantity
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b2_qty <= (others => 'Z'); -- quantity
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b2_sec <= (others => 'Z'); -- 7x 8bits securities identifier
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b2_sec <= (others => 'Z'); -- 7x 8bits securities identifier
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b2_id <= (others => 'Z'); -- unique/identifier/counter
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b2_id <= (others => 'Z'); -- unique/identifier/counter
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--
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--
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b2_px_type <= std_logic_vector'(std_logic_vector'("0000"));
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b2_px_type <= std_logic_vector'(std_logic_vector'("00000"));
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state <= 8;
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state <= 8;
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elsif b1_px_type = std_logic_vector'("0110") then
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elsif b1_px_type = std_logic_vector'("00110") then
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-- do set store from incoming price
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-- do set store from incoming price
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store_px_type <= b1_px_type;
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store_px_type <= b1_px_type;
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store_buy_sell <= b1_buy_sell;
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store_buy_sell <= b1_buy_sell;
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store_px <= b1_px;
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store_px <= b1_px;
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store_qty <= b1_qty;
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store_qty <= b1_qty;
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store_sec <= b1_sec;
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store_sec <= b1_sec;
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store_id <= b1_id;
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store_id <= b1_id;
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--
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--
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b2_px_type <= std_logic_vector'(std_logic_vector'("0000"));
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b2_px_type <= std_logic_vector'(std_logic_vector'("00000"));
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state <= 8;
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state <= 8;
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elsif b1_px_type = std_logic_vector'("0101") then
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elsif b1_px_type = std_logic_vector'("0101") then
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-- incoming price, register it and start the state machine
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-- incoming price, register it and start the state machine
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if (store_sec /= b1_sec or store_buy_sell = b1_buy_sell or store_px_type /= std_logic_vector'(std_logic_vector'("0110")) ) then
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if (store_sec /= b1_sec or store_buy_sell = b1_buy_sell or store_px_type /= std_logic_vector'(std_logic_vector'("0110")) ) then
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| Line 130... |
Line 130... |
state <= 14;
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state <= 14;
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elsif (to_integer(unsigned(store_qty)) = 0 or to_integer(unsigned(b1_qty)) = 0 or
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elsif (to_integer(unsigned(store_qty)) = 0 or to_integer(unsigned(b1_qty)) = 0 or
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(store_buy_sell = std_logic_vector'("111") and store_px < b1_px) or
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(store_buy_sell = std_logic_vector'("111") and store_px < b1_px) or
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(store_buy_sell = std_logic_vector'("000") and store_px > b1_px) ) then
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(store_buy_sell = std_logic_vector'("000") and store_px > b1_px) ) then
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-- no deal: this is the correct store_item but there's no match
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-- no deal: this is the correct store_item but there's no match
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b2_px_type <= std_logic_vector'(std_logic_vector'("0000"));
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b2_px_type <= std_logic_vector'(std_logic_vector'("00000"));
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state <= 8;
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state <= 8;
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else
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else
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-- send a return order
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-- send a return order
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b2_px_type <= std_logic_vector'("1010");
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b2_px_type <= std_logic_vector'("1010");
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b2_buy_sell <= store_buy_sell; -- 111 buy, 000 sell
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b2_buy_sell <= store_buy_sell; -- 111 buy, 000 sell
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| Line 175... |
Line 175... |
b2_id <= (others => 'Z'); -- unique/identifier/counter
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b2_id <= (others => 'Z'); -- unique/identifier/counter
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state <= 16;
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state <= 16;
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when 8 =>
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when 8 =>
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-- correct store_item but there was no match
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-- correct store_item but there was no match
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b2_px_type <= std_logic_vector'("ZZZZ");
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b2_px_type <= std_logic_vector'("ZZZZZ");
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state <= 16;
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state <= 16;
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when others => null;
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when others => null;
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end case; -- state
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end case; -- state
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