|
发表于 2022-7-20 12:04:45
|
显示全部楼层
module jsq(CP,RDN,tmp,D); K* R1 N1 y _& l; e- I& J! V4 j
input CP;
- l: r0 ~% }9 _0 K/ F; [input RDN; |8 w& P" B: F6 P: g
output[6:0] tmp;
g1 y1 a' s/ l# N/ X4 Goutput[3:0] D;
4 P! _: E: g4 e6 V# |+ vreg[3:0] D;* {6 z, c0 `8 c \( K4 ~4 l
reg[4:0] T1,T2,T3,T4;; m* f& o* d" @# ~ @
reg[6:0] Y;
' J, `+ z0 X; c7 b& Q4 i2 y) Greg[31:0] CNT,CNT1;
8 T; }& Q+ F0 U' R r" |reg CP1,CP3;7 ~7 h z0 X3 d3 I7 O' b
reg [6:0] tmp;
) q0 d% h- P% o) B; A+ T: q# creg[3:0] c;
0 q6 ]- I9 _$ k) \7 u8 L) ^reg[15:0] A; 0 H3 K' s- p% ]% c c
always @(posedge CP) 5 X) Z2 s! }# q6 D$ m4 m
begin
* N7 Q- A- c, |: J) K+ r ^ if(CNT<24999999) CNT=CNT+1; / p: W6 N' C7 W' ]* y* h% c1 e
else begin CNT=0;CP1=~CP1;end
/ j) I: N0 g* `9 {3 q if(CNT1<2499) CNT1=CNT1+1;
* [: h; z0 K, p7 \. o- D& i* p else begin CNT1=0;CP3=~CP3;end 1 V$ x2 F8 {6 @0 g, J: M5 x
8 x/ m. n" j6 C' n: s! H3 W5 I
end / K: o& V9 l" c6 H% ]0 |
$ m) J$ q4 F* ]4 }$ H" J; K: Q
always@(posedge CP1)% F }6 m* z6 ~3 n
begin/ j2 L# ~5 ]% `) N; Q, n9 F& t0 ]
if(~RDN) A=9999; u' ~6 |* U, s# W
else A=A-1;
- o3 Y' X0 O- j1 V T1=A/1000;
1 x" ^; U V s e+ r T2=(A/100)%10;8 i3 c/ k" c, d
T3=(A/10)%10;5 b* q4 U6 ^2 |. }* s. \
T4=A%10;( J' B8 r- E& Q
end
1 F6 r1 \2 @: _# P4 R always@(posedge CP3)
+ _. F: d2 R7 r6 n$ g begin; R3 ]3 k9 G4 M. ^, Z/ V% @' N. Q
begin
4 e: B2 f; b8 O2 m8 ~( b if(~RDN) c=0;
1 a: P0 }# o, n1 d4 L# x9 { O else if(c<3) c=c+1;
. U+ P7 s) {+ \ o. l else c=0;
. t* J2 V( t/ W9 i case(c)
8 Q e! K, S2 F: W 0:D='b1110;
) h A9 c- C5 `9 G 1:D='b1101;. M4 {$ c. \# w- a$ G8 o
2:D='b1011;
4 Q; D, e/ S& t4 z# _4 q, L 3:D='b0111;4 |! O; G. _0 s3 f9 C6 s2 X
endcase
8 }. X. C$ d+ `$ S" X end4 L( Z( a0 \3 k9 {4 H# p
begin
, N6 C$ H% O# S6 Tcase(D)- m( u5 C4 s' ], ^1 b c
'b0111:tmp=T1;2 Q. ]0 X" q5 _+ d# F* d8 x: \ F
'b1011:tmp=T2;2 Z6 l+ f/ Y# w! O( c+ o
'b1101:tmp=T3;6 G4 K8 s0 {6 E: O, T) C
'b1110:tmp=T4;* s3 u7 y" ?; F0 S
endcase5 ^" q8 D6 ? M6 ^5 m2 ~
end9 R# u+ \. F+ N9 \7 M
begin/ `) V, g/ E; c0 |- T9 H& W
case(tmp)- A& ]; Z7 Q* q- H( E" e/ `& A0 }
0:Y<=7'b000_0001;1 @2 n0 g6 [1 Z7 ]3 ~8 l
1:Y<=7'b100_1111;
* [( ~. F# P" W* V y$ K 2:Y<=7'b001_0010;
% Z) Z0 t! M& b$ @ ~* b 3:Y<=7'b000_0110;
4 V5 F- Q( a# h, V 4:Y<=7'b100_1100;
5 Z$ P1 [4 L* N, B# }& l9 u 5:Y<=7'b010_0100;; X1 m6 L* ^2 C" d* c
6:Y<=7'b110_0000;7 {: Z/ Q+ c, @& x% e& Q
7:Y<=7'b000_1111;
d/ S3 h" _/ _. R" n. k- Y) }7 _ 8:Y<=7'b000_0000;
# S3 J% a. o' z" h" ? 9:Y<=7'b000_1100;
- y) b- l0 o U- g5 o default:Y<=7'b000_0000;. C; X. F0 P( V1 v& l- U6 L1 Y5 y
endcase$ M# A1 B- }2 A. ~! f. u, T/ ^6 k
end
- _+ q i# e: M Q5 nend
h: h+ f" `3 z6 h+ z/ c2 Z* B6 p
3 c; H) u7 \( Xendmodule |
|