想必現(xiàn)在有很多小伙伴對于Maxplus的問題方面的知識都比較想要了解，那么今天小好小編就為大家收集了一些關(guān)于Maxplus的問題方面的知識分享給大家，希望大家會喜歡哦。

錯誤程序幫你改了，就是4個地方本來是用<=號的 你用了=號，在VHDL里面<=才是賦值語句，，

LIBRARY IEEE;

USE IEEE.STD_LOGIC_1164.ALL;

芝士回答公，版權(quán)必究，未經(jīng)片許可，想不得到族轉(zhuǎn)載

ENTITY CONTROLLER IS

不作度力機本全公，次保切溫許約親育。

PORT(

不要出能過方二利并規(guī)七導(dǎo)，收更積集半何易育。

CLK,RST:IN STD_LOGIC;

IR: IN STD_LOGIC_VECTOR(1 DOWNTO 0);

PCBUS,MEMBUS,DRBUS:OUT STD_LOGIC;

ARLOAD,PCLOAD,DRLOAD,ACLOAD,IRLOAD,PCINC,READ,ALUSEL1,ALUSEL2:OUT STD_LOGIC

);

END ENTITY CONTROLLER;

ARCHITECTURE CONTROSTR OF CONTROLLER IS

TYPE STATE_TYPE IS (START,FETCH1,FETCH2,FETCH3,COM1,JREL1,OR1,OR2,SUB1,SUB2);

SIGNAL STATE:STATE_TYPE;

BEGIN

PROCESS(CLK,RST)

BEGIN

IF RST='1' THEN

STATE<=START;

ELSIF RISING_EDGE(CLK) THEN

ARLOAD<='0';

PCLOAD<='0';

DRLOAD<='0';

ACLOAD<='0';

IRLOAD<='0';

PCINC<='0';

READ<='Z';

CASE STATE IS

WHEN START=>STATE<=FETCH1;PCBUS<='1';MEMBUS<='0';DRBUS<='0';ARLOAD<='1';

WHEN FETCH1=>STATE<=FETCH2;PCBUS<='0';DRBUS<='0';MEMBUS<='1';DRLOAD<='1';PCINC<='1';

WHEN FETCH2=>STATE<=FETCH3;PCBUS<='0';MEMBUS<='0';DRBUS<='1';ARLOAD<='1';IRLOAD<='1';

WHEN FETCH3=>

IF IR="00"THEN STATE<=COM1;ACLOAD<='1';ALUSEL2<='1';ALUSEL1<='1';

ELSIF IR="01"THEN STATE<=JREL1;PCBUS<='0';MEMBUS<='0';DRBUS<='1';PCLOAD<='1';ALUSEL1<='0';ALUSEL2<='0';

ELSIF IR="10"THEN STATE<=OR1;READ<='0';PCBUS<='0';MEMBUS<='1';DRBUS<='0';DRLOAD<='1';

ELSIF IR="11"THEN STATE<=SUB1;READ<='0';PCBUS<='0';MEMBUS<='1';DRBUS<='0';DRLOAD<='1';

END IF;

WHEN COM1=>STATE<=FETCH1;PCBUS<='1';MEMBUS<='0';DRBUS<='0';ARLOAD<='1';

WHEN JREL1=>STATE<=FETCH1;PCBUS<='1';DRBUS<='0';ARLOAD<='1';MEMBUS<='0';

WHEN OR2=>STATE<=FETCH1;PCBUS<='1';MEMBUS<='0';DRBUS<='0';ARLOAD<='1';

WHEN SUB2=>STATE<=FETCH1;PCBUS<='1';MEMBUS<='0';DRBUS<='0';ARLOAD<='1';

WHEN OR1=>STATE<=OR2;ACLOAD<='1';PCBUS<='0';MEMBUS<='0';DRBUS<='1';ALUSEL1<='1';ALUSEL2<='0';

WHEN SUB1=>STATE<=SUB2;ACLOAD<='1';PCBUS<='0';MEMBUS<='0';DRBUS<='1';ALUSEL1<='0';ALUSEL2<='1';

WHEN OTHERS=>STATE<=FETCH1;

END CASE;

END IF;

END PROCESS;

END ARCHITECTURE CONTROSTR;

本文到此結(jié)束，希望對大家有所幫助。