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这些都是小错误,希望细心一点
* ]- W d9 h: |8 Z0 y. T- Clibrary ieee;
: t1 ? W2 T6 H1 H* V( p4 |, _use ieee.std_logic_1164.all;
1 d" T9 P$ E B4 uuse ieee.std_logic_arith.all;
, {/ w% z1 Z9 }' Fuse ieee.std_logic_unsigned.all;
+ H2 B# B: W4 n" Q( E% k* ?entity mycounter_60 is
8 f& S8 B; B% s' I2 ^- ~1 s1 w qport( clk,clr,en,bcd1wr,bcd10wr :in std_logic;
' s! o% o7 }* N6 r din:in std_logic_vector(3 downto 0);
+ V+ i# E% Z3 G6 B co ut std_logic;
: j7 r% R) J, ]$ m- g) }( H bcd1 ut std_logic_vector(3 downto 0);. _% G+ H( ^, z1 T' T W* L# g
bcd10 ut std_logic_vector(2 downto 0)4 ?8 Y1 w- d( C. T; X) F) A
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end;: p; E$ K$ g1 ?: X2 ?
architecture behav of mycounter_60 is$ A/ v: v1 h8 D( s+ u
signal bcd1n:std_logic_vector(3 downto 0);+ m4 ?# k! D0 D
signal bcd10n:std_logic_vector(2 downto 0);
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begin, Q2 ~& W7 Y" c! {/ W
process(bcd1wr,clr,en,clk)! h, i3 Q( Q# ?4 T/ c" Z& `# U& u# q
begin # E1 C2 c: N7 U8 C* f5 K
if(clr='0')then
4 W* a, t* Q$ ~$ _bcd1n<=(others=>'0');( U" j0 t7 e+ m+ h9 x1 v
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elsif(clk'event and clk='1')then
1 ~5 |- I/ G0 u3 d3 `, Nif (bcd1wr='1' and en='1')then( P) K# n& j+ }) f7 U, q4 |
bcd1n<=din;
" l5 A. X9 o4 N/ R3 Felsif (en='1')then
, E' ?) M3 L/ m7 E8 P/ w* |bcd1n<=bcd1n+1;! i" Z- s) l6 E: I) _: \: k
if (bcd1n>=9)then
& z: q- W; V& n9 D |" vbcd1n<="0000";# W) J5 U( Q) W8 w( e! Z
2 z% _+ L. L7 i5 s/ {( d8 e% x% Aend if;) q, x" m+ o5 u$ g/ V
end if;' d. h& L. ^4 X- A$ |" R9 i
end if;
4 w) `: e: w$ D( q# v) B! eend process;$ {- i. [6 I: l! v" q) I$ n
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$ Y* w- d( p u5 i, ]process(bcd10wr,en)
, c! W. t& F9 P5 h+ D) V0 mbegin0 `6 m$ e. o- m) ]8 Y7 G: ]6 |: q
if(clr='0')then
$ d J, `) F; m$ F: j0 _bcd10n<=(others=>'0');
. ]' g5 \8 n3 \0 Hif(bcd10wr='1' and en='1')then
* |. u7 E5 t ebcd10n<=din(2 downto 0);
7 X! A: ~ @6 v0 }; \- Helsif(bcd1n=9 and en='1') then
* {- b9 O+ U U3 Z. e# H! Xbcd10n<=bcd10n+1;( {6 z3 y' m% [2 b5 S
if(bcd10n=5) then
4 N4 q9 F& T6 Ubcd10n<="000";2 [0 L% k( k: r! x
co<='1';
2 F! A4 l; ?2 D z9 _else
) J6 x- u% b8 T4 v$ ?, R T) Gco<='0';
; ?9 `, [! x9 ?5 B2 \ W. ^end if;) o+ e; \; b" a6 m+ {6 C+ ^2 q" p) G
end if;
4 d9 l! D1 ?+ Q2 ?# @) Q" o* Gend if;
% I; ]) n s* M& A7 C1 j/ f+ d/ l' lend process;
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bcd1<=bcd1n;
1 b) x. v2 c; `5 o0 @7 A& ?+ ebcd10<=bcd10n;# Y% j! Z% P) C5 A$ ^, ?6 L1 Z
end behav;
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