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这些都是小错误,希望细心一点
. {! y5 r- o4 n6 s# Nlibrary ieee;
5 x/ D& z/ D0 ~. f+ juse ieee.std_logic_1164.all;
* B7 Q! O& G! w$ Q; Luse ieee.std_logic_arith.all;# F2 h! q+ V' p( g' t
use ieee.std_logic_unsigned.all;- |. R, E1 g2 t* B
entity mycounter_60 is
8 S1 d0 z7 W" U/ rport( clk,clr,en,bcd1wr,bcd10wr :in std_logic;
4 w& a# w* _ h& } din:in std_logic_vector(3 downto 0);' q: P9 \2 c& s0 H* m% C K
co ut std_logic;
W" D8 s6 E1 J: A, v bcd1 ut std_logic_vector(3 downto 0);
! \ E) a$ ~2 B bcd10 ut std_logic_vector(2 downto 0)
, M) N" D s4 V8 C/ O+ b' p: } );
+ ~" m8 h& {, C' \7 ]/ fend;' D, |1 i2 z, _* f2 C8 Z# ^. i
architecture behav of mycounter_60 is% x9 a! w. R# t4 w5 w7 H
signal bcd1n:std_logic_vector(3 downto 0);* \9 f6 k7 n* a$ ~0 W" V" U
signal bcd10n:std_logic_vector(2 downto 0);
5 B! O: R) N( X; i( p5 `- z; `4 z& B' Y% A( j! E% ]4 Z1 s+ h m
begin* p2 a @# |- e
process(bcd1wr,clr,en,clk) I k) R. G2 P8 Y2 f$ `$ c. f+ ~
begin % F( d9 y- R+ R$ @2 K
if(clr='0')then8 B8 d, B# {# e$ O9 o: `
bcd1n<=(others=>'0');5 ?3 o. ^3 u4 v, E3 g& _; N
+ Q# K, v8 r$ K) B% Pelsif(clk'event and clk='1')then! _) D k. y; r2 r
if (bcd1wr='1' and en='1')then
5 Y- o2 y: @: w$ Qbcd1n<=din;
9 o$ a- P* [* W3 o/ }9 B C3 V( Yelsif (en='1')then! l; ^, Y4 ^: J# L' H0 r$ R
bcd1n<=bcd1n+1;- D1 b. `, k9 b
if (bcd1n>=9)then: w; C. r$ M7 Q/ S- D1 N
bcd1n<="0000";
; |; ]8 k1 O# p9 c5 L- G" h# Q- w6 ^& [
end if;
4 T5 m+ K8 ~( `. B6 \) Y2 f/ `end if;
' n5 J+ y( ^" ?6 c: ~& g+ ]end if;
3 `7 K! i" z; P/ _4 K" Y @: Kend process;
! S* M* J& w, P: V; |( Y U5 x1 ]8 i# i# }& Z/ H
0 M' o. t: q3 Nprocess(bcd10wr,en)
, u6 z$ h- v6 z9 h) S9 h/ P" W1 Gbegin
6 n% M2 j( V6 h+ I1 d R# k( Cif(clr='0')then* K2 G! b( H' }+ P# T
bcd10n<=(others=>'0');* @0 L) @( w) [) J
if(bcd10wr='1' and en='1')then
. ^) ^; f7 w6 o) _. h# ubcd10n<=din(2 downto 0);* R7 m% S, m3 W7 u' p
elsif(bcd1n=9 and en='1') then
: F6 D! T& y0 s3 jbcd10n<=bcd10n+1;) P$ A5 e$ N7 J3 t6 f
if(bcd10n=5) then
6 A7 N' P7 j; M3 S0 G& U, P0 J$ n- k" Wbcd10n<="000";
+ F2 ~1 c9 C: E' @# l( T! _! w$ _: Wco<='1';9 i& G& r6 T" h$ J, e
else4 R$ V' p4 _, t: w: W
co<='0';* q, @$ X4 r5 G. \+ {3 Y
end if;1 j% |$ r& k3 t, }$ k
end if;
* \2 b, h# B5 `& v7 Qend if;
* x [/ ^8 d- J$ f' v/ P' Lend process;
3 z3 M% ]( ^2 z4 d' T
& L# Z M. U" a1 z: @" {9 kbcd1<=bcd1n;
. Z5 f) v) e% i) ubcd10<=bcd10n;
4 p6 A$ q' H# C% {5 |end behav;
, n6 c9 W9 z) o$ v( X7 [- u, U+ a4 `8 Q2 ` & a% P R, O$ v1 t: Q- q
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