【发布时间】:2015-12-10 04:21:02
【问题描述】:
我已经使用 VHDL 在 Quartus II 上创建了一个新项目,但是在我运行它之后会出现如下所示的错误。你知道为什么吗?
Error (10481): VHDL Use Clause error at test_VHDL.vhd(5): design library "work" does not contain primary unit "std_arith"
Error (10800): VHDL error at test_VHDL.vhd(5): selected name in use 子句不是扩展名称
错误:Quartus II 64-Bit Analysis & Synthesis 不成功。 2 个错误,1 个警告
错误:峰值虚拟内存:1003 MB
错误:处理结束:2015 年 12 月 5 日星期六 19:50:39
错误:经过时间:00:00:13
错误:总 CPU 时间(在所有处理器上):00:00:38
错误 (293001):Quartus II 完整编译不成功。 4 个错误,1 个警告
这是我的代码:
library ieee;
use ieee.std_logic_1164.all;
library work;
use work.std_arith.all; --extinde operatorul ” + “ la opera]ii \ntre semnale
--[i numere \ntregi
entity SUM is
port (a : in std_logic_vector(3 downto 0);
b : in std_logic;
ini,start,clk,a_disponibil,b_disponibil : in std_logic;
sum : out std_logic_vector(4 downto 0);
q : inout std_logic_vector(4 downto 0));
end SUM;
architecture arch_SUM of SUM is
signal load_a,load_b,reset,load_s : std_logic;
signal z : std_logic_vector(0 to 3);
type STARE is (S0,S1,S2,S3,S4); --st`rile automatului
signal S : STARE;
begin
--NUMARATOR
---------------------------------------------------------------
NUM : process(b)
begin
if rising_edge(b) then
if reset='1' then q<=(others=>'0');
elsif load_a='1' then
for i in 3 downto 0 loop --\ncarc` operandul a
q(i) <= a(i); --\n ultimii 3 bistabili
end loop; --ai num`r`torului
elsif load_b='1' then
q <= q+1; --adun` b la a
end if;
end if;
end process NUM;
--REGISTRU
--------------------------------------------------------------------
REG: process(clk)
begin
if rising_edge(clk) then
if reset='1' then sum<=(others=>'0');
elsif load_s='1' then
sum<=q;
end if;
end if;
end process REG;
--AUTOMAT
-----------------------------------------------------------------------------------
AUTOMAT : process(ini,clk)
begin
if INI='1' then s<=S0; --ini]ializeaz` automatul
elsif rising_edge(clk) then
case S is --descrie diagrama st`rilor
when S0 =>
if start='1' then S<=S1;
else S<=S0;
end if;
when S1 =>
if a_disponibil='1' then S<=S2;
else S<=S1;
end if;
when S2 =>
if b_disponibil='1' then S<=S3;
else S<=S2;
end if;
when S3 =>
if b_disponibil='0' then S<=S4;
else S<=S3;
end if;
when S4 => S<=S0;
end case;
end if;
end process AUTOMAT;
with S select
z<= "0000" when S0, --genereaz` ie[irea
"0010" when S1,
"1000" when S2,
"0100" when S3,
"0001" when others;
load_a <= z(0);
load_b <= z(1); --conexiuni interne
reset <= z(2);
load_s <= z(3);
end arch_SUM;
有谁知道为什么以及如何解决它?
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