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这些都是小错误,希望细心一点3 H1 E* ^7 I5 F8 {
library ieee;
9 @, v* } v7 p* Luse ieee.std_logic_1164.all;7 k' E1 ^0 J4 Z( i+ y
use ieee.std_logic_arith.all;$ B7 T5 F, L0 r1 i
use ieee.std_logic_unsigned.all;
1 n! q/ V8 f c# F1 aentity mycounter_60 is+ }5 O# M2 V9 |9 _! |4 f
port( clk,clr,en,bcd1wr,bcd10wr :in std_logic;& {* }' |+ S6 B+ j+ `* f$ D+ f
din:in std_logic_vector(3 downto 0);! Q) V( c+ A, Z# ~ E
co ut std_logic;( `4 F. e9 _- f6 F* N
bcd1 ut std_logic_vector(3 downto 0);
0 |4 `% o v; H7 O3 T' P bcd10 ut std_logic_vector(2 downto 0)
+ l! P/ `3 q& E4 H );5 X6 t8 K" M f2 Q
end;* t, @. u8 Y2 Z) x" l0 T- W- d0 i
architecture behav of mycounter_60 is* a/ f( p- R- T7 f6 e
signal bcd1n:std_logic_vector(3 downto 0);
3 [, |: a# i" b* E$ a8 a+ Q( Xsignal bcd10n:std_logic_vector(2 downto 0);' H! O2 ]4 b5 j- g0 l/ l8 x6 w( U& h
2 R" _! O( }/ obegin
$ _, V. e$ _ m1 y$ l- X process(bcd1wr,clr,en,clk)
; l8 W# t/ [- P' m |" V begin " S$ q8 E4 o. v) F
if(clr='0')then
@( G8 k0 p. l0 Z" S6 X" W! z% `bcd1n<=(others=>'0');
\* B/ P2 H1 [$ U) Z' ^* r. R: @3 Z) j
elsif(clk'event and clk='1')then
0 R8 O7 ?( Y2 J% @if (bcd1wr='1' and en='1')then( B5 c0 m, w; T
bcd1n<=din;
: @# B2 Y) ~+ m. g: eelsif (en='1')then0 Q$ V' y! G: b8 n5 \
bcd1n<=bcd1n+1;2 L: x1 [+ j* u. o& E0 S
if (bcd1n>=9)then
+ ~( n- C8 B `. k+ W& Obcd1n<="0000";
z1 T9 d; N" z
F: _8 ?* t9 w& _9 X, S6 n& yend if;# S5 J" @2 \, q5 K, d# U( u
end if;3 }$ I0 u# \* @2 l0 k4 ?! \
end if;
+ W, p' o! Y# \# [end process;3 @! Q" ?6 O$ K8 Y$ a
* V! L @3 Y |& k7 W( d0 x/ e1 V h# @4 A! D
process(bcd10wr,en)
" K8 K& Y R5 q9 q6 n, ]8 ]; U) lbegin' }8 T7 \2 R9 |, L8 x
if(clr='0')then8 X( O# C" m+ x/ X6 N e
bcd10n<=(others=>'0');
; b0 n7 U: ^4 i$ d$ D; [5 {if(bcd10wr='1' and en='1')then; j- \3 q) D& O9 h
bcd10n<=din(2 downto 0);
% t8 O" Y& O, k6 p% Pelsif(bcd1n=9 and en='1') then( y6 G) @+ R) W; I d
bcd10n<=bcd10n+1;
' j8 _6 U: ^) P- G' xif(bcd10n=5) then
* J1 e+ u4 H3 z" Q* n1 mbcd10n<="000";
. |" L. K3 u- o; r. I; |co<='1';
. S1 J o& n# F9 Oelse
7 G9 @: k: |3 i1 w, {co<='0';0 D, F/ }7 g2 D
end if;
" x' ~& b9 E3 F6 R+ j, Send if;
& \% \: g& B9 E' E+ kend if;, @% ]# t" L+ }& q5 C0 T
end process;$ A9 X. i7 F H$ X, c% l
7 A3 T7 ?* d# m/ r/ t7 vbcd1<=bcd1n;
; |1 h5 G# Q' N5 J4 @bcd10<=bcd10n;
% w$ l, ^- S* N$ e: l7 M: [* ^! q" lend behav;) f6 N6 X4 Q1 X( J& C
4 q. O& f3 I% u5 @; [) {
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