| Line 79... |
Line 79... |
fifo_push : in std_logic; -- push data in exponent fifo
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fifo_push : in std_logic; -- push data in exponent fifo
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fifo_full : out std_logic; -- high if fifo is full
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fifo_full : out std_logic; -- high if fifo is full
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fifo_nopush : out std_logic; -- high if error during push
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fifo_nopush : out std_logic; -- high if error during push
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-- control signals
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-- control signals
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start : in std_logic; -- start multiplication/exponentiation
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start : in std_logic; -- start multiplication/exponentiation
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run_auto : in std_logic; -- single multiplication if low, exponentiation if high
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exp_m : in std_logic; -- single multiplication if low, exponentiation if high
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ready : out std_logic; -- calculations done
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ready : out std_logic; -- calculations done
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x_sel_single : in std_logic_vector (1 downto 0); -- single multiplication x operand selection
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x_sel_single : in std_logic_vector (1 downto 0); -- single multiplication x operand selection
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y_sel_single : in std_logic_vector (1 downto 0); -- single multiplication y operand selection
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y_sel_single : in std_logic_vector (1 downto 0); -- single multiplication y operand selection
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dest_op_single : in std_logic_vector (1 downto 0); -- result destination operand selection
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dest_op_single : in std_logic_vector (1 downto 0); -- result destination operand selection
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p_sel : in std_logic_vector (1 downto 0); -- pipeline part selection
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p_sel : in std_logic_vector (1 downto 0); -- pipeline part selection
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| Line 151... |
Line 151... |
result_dest_op => result_dest_op,
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result_dest_op => result_dest_op,
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collision => collision,
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collision => collision,
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clk => clk
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clk => clk
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);
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);
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|
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result_dest_op <= dest_op_single when run_auto = '0' else "11"; -- in autorun mode we always store the result in operand3
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result_dest_op <= dest_op_single when exp_m = '0' else "11"; -- in autorun mode we always store the result in operand3
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-- A fifo for auto-run operand selection
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-- A fifo for auto-run operand selection
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the_exponent_fifo : fifo_primitive
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the_exponent_fifo : fifo_primitive
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port map(
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port map(
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clk => clk,
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clk => clk,
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| Line 176... |
Line 176... |
clk => clk,
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clk => clk,
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reset => reset,
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reset => reset,
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start => start,
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start => start,
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x_sel_single => x_sel_single,
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x_sel_single => x_sel_single,
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y_sel_single => y_sel_single,
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y_sel_single => y_sel_single,
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run_auto => run_auto,
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run_auto => exp_m,
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op_buffer_empty => fifo_empty,
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op_buffer_empty => fifo_empty,
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op_sel_buffer => fifo_dout,
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op_sel_buffer => fifo_dout,
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read_buffer => fifo_pop,
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read_buffer => fifo_pop,
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done => ready,
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done => ready,
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calc_time => calc_time,
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calc_time => calc_time,
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