gn="justify">-mult4x4_s is (
A: in std_logic_vector (3 downto 0);: in std_logic_vector (3 downto 0); : out std_logic_vector (7 downto 0)
); mult4x4_s;
-mult4x4_s_arch of mult4x4_s is
-
- Components Declarations:
- MULT18X18 (
A: in std_logic_vector (17 downto 0);
B: in std_logic_vector (17 downto 0);
P: out std_logic_vector (35 downto 0)
); component;
-
A_int: std_logic_vector (17 downto 0); B_int: std_logic_vector (17 downto 0); P_int: std_logic_vector (35 downto 0);
-
_int (17 downto 8) <= "0000000000"; _int (7 downto 7) <= A (3 downto 3); _int (6 downto 6) <= A (3 downto 3); _int (5 downto 5) <= A (3 downto 3); _int (4 downto 4) <= A (3 downto 3); _int (3 downto 0) <= A (3 downto 0 ); _int (17 downto 8) <= "0000000000"; _int (7 downto 7) <= B (3 downto 3); _int (6 downto 6) <= B (3 downto 3); _int ( 5 downto 5) <= B (3 downto 3); _int (4 downto 4) <= B (3 downto 3);
_int (3 downto 0) <= B (3 downto 0);
(7 downto 0) <= P_int (7 downto 0);
-Multiplier Instantiation_MULT18X18: MULT18X18map (
A => A_int (17 downto 0),
B => B_int (17 downto 0),
P => P_int (35 downto 0)
);
mult4x4_s_arch;
ucf.ucf
NET "clk" LOC = "C9" | IOSTANDARD = LVCMOS33;
"P <7>" LOC = "F9" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8; "P <6>" LOC = "E9" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8; "P <5>" LOC = "D11" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8; "P <4>" LOC = "C11" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8; "P <3> ; "LOC =" F11 "| IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8;" P <2> "LOC =" E11 "| IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8;" ; P <1> "LOC =" E12 "| IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8;" P <0> "LOC =" F12 "| IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 8;
"A <0>" LOC = "L13" | IOSTANDARD = LVTTL | PULLUP; "A <1>" LOC = "L14" | IOSTANDARD = LVTTL | PULLUP; "A <2>" LOC = "H18" | IOSTANDARD = LVTTL | PULLUP; "A <3>" LOC = "N17" | IOSTANDARD = LVTTL | PULLUP;
"load" LOC = "H13" | IOSTANDARD = LVTTL | PULLDOWN; "rst" LOC = "D18" | IOSTANDARD = LVTTL | PULLDOWN
ДОДАТОК Б
Лістинг коду реалізації 4-х розрядного множення чисел без знаку з використанням спеціалізованого вбудованого блоку помножувача.
Sor...
