quartus-II-軟件做4的位乘法器設(shè)計(vhdl-語言)

1、用 quartus II 軟件設(shè)計 4 位乘法器并行乘法的算法： 下面根據(jù)乘法例題來分析這種算法，題中M4 ，M3 ，M2 ，M1是被乘數(shù)，用 M 表示。 N4，N3，N2， N1 是乘數(shù)，用 N 表示乘法模塊Library ieee;Use ieee.std_logic_1164.all;Use ieee.std_logic_unsigned.all;Entity and4a isPort(a:in std_logic_vector(3 downto 0);en:in std_logic;r:out std_logic_vector(3 downto 0);End and4a;Archite

2、cture behave of and4a isBeginProcess(en,a(3 downto 0)BeginIf (en=1) thenr=a;Elser=0000;End if;End process;End behave;加法模塊Library ieee;Use ieee.std_logic_1164.all;Use ieee.std_logic_unsigned.all;Entity ls283 isPort (o1,o2:in std_logic_vector(3 downto 0); res:out std_logic_vector(4 downto 0); End ls28

3、3;Architecture behave of ls283 isBeginProcess(o1,o2)Begin res=(0&o1)+(0&o2);End process;End behave;主程序Library ieee;Use ieee.std_logic_1164.all;Use ieee.std_logic_unsigned.all;Entity mul4p isPort (op1,op2:in std_logic_vector(3 downto 0); result:out std_logic_vector(7 downto 0);End mul4p;Architecture

4、count of mul4p iscomponent and4a port (a:in std_logic_vector(3 downto 0); en:in std_logic;r:out std_logic_vector(3 downto 0);End component;Component ls283 port (o1,o2:in std_logic_vector(3 downto 0); res:out std_logic_vector(4 downto 0);End component;Signal sa:std_logic_vector(3 downto 0);Signal sb:

5、std_logic_vector(4 downto 0);Signal sc:std_logic_vector(3 downto 0);Signal sd:std_logic_vector(4 downto 0);Signal se:std_logic_vector(3 downto 0);Signal sf:std_logic_vector(3 downto 0);Signal sg:std_logic_vector(3 downto 0);-signal tmp1:std_logic;Beginsg=(0&sf (3 downto 1);-tmp1op2,en=op1(1),r=se);U

6、1:and4a port map(a=op2,en=op1(3),r=sa);U2:ls283 port map(o1=sb(4 downto 1),o2=sa,res=result(7 downto 3);U3:and4a port map(a=op2,en=op1(2),r=sc);U4:ls283 port map(o1=sc,o2=sd(4 downto 1),res=sb);u5:ls283 port map(o1=sg,o2=se,res=sd);u6:and4a port map(a=op2,en=op1(0),r=sf);result(0)=sf(0);result(1)=sd

7、(0);result(2)=sb(0);-result(7 downto 0)=00000000;End count;5.仿真波形圖sn 予歲IrmMI-恃目巨TmoesEI ry 匚老tzpi欣2nDQBJ1cMcL 11Q1gghaJcQQgsJie31KJILuiIr Jikia自荷靜浦笛l中芒并口 芒商苗薛涵浴卜餌訂0 口：BJm 】口一ia二二1:廠DTfKIXCXIHCYDDIID二三起 旨mtrb.nn2m1!JE gdHw-nlKA嚴f HK畔、.、塚 2 二二 p 已占 L5iH】弐亠 nm iiglJhYi富ll-tr-dlv-H ASWLm氐E pr紇|1空 But *6

8、13: Jtle*?1T口 a；匚QPr L:一一二& TULE lLLkLur 中fe-邑君rrw-吉盜金做(&齊求JJO5T血口rt; fai FL議.?ulHrft* ，H f弋 l.lM k p蕓 alLF: uliH 山Sr-?#.mIni亙一rlKtD- Di ijn diKkD1r1ra Nil 涉!lB_-Im電u 丘 M.團亙孑0韋u口 EnrlmlrlrnuiJ -J I _ _J _J -J J nJ nJ 1rL M MspdF占 JHrJLu.J 0irul L總基黨首zrHgn mm n nrunnm rm rrnscu ltjjeo3 = n r-LrulJuunL n55hd-3 3J H4r33LETJS_ rLJFHtlFJCPnFJE.IPhgc l-r _J - - - - L_r i !i