|
3#
樓主 |
發表於 2021-5-26 17:25:02
|
只看該作者
% i& C2 ]$ ^+ z, h2 ?* H*-------------------------------------alphabet-------------------------------------*8 ]8 l8 D$ @+ V1 N" p1 R* p' @
6 \$ F$ n8 Z) M2 Z' Y! i
`timescale 1ns / 1ps, Q5 K1 C$ d( J5 t" f6 m
/ G5 H, h& K+ o4 a2 @! {module alphabet(; u3 F( d" v3 H8 h- v, |8 L- |
input RESET,
! K; }3 ~* `8 G1 ` input Clk,/ m: k3 U' S! _5 }+ \" m7 s* b2 L n9 I
input LONG,
& N Z; m/ |0 `: t4 z input SHORT,
4 z0 c- W! u& {( B @% | input END_CHAR,# o* d2 }' Z- i8 b; H: Q7 t
output [7:0] LETTER," L# { @* f" r) S {4 Q8 D6 m; a
output STROBE r o' R2 p @. ?
);2 R9 E7 E) \3 T, a
$ z% J5 V* l* t. freg[4:0] STATE, LETTER_REG;
0 N. q. J! |$ o# D, ]* U5 a- _reg STROBE_REG;
# F Y. o/ K6 P( `% i
7 r" Q# p) e+ G' Y, [8 r5 A/ {assign LETTER = LETTER_REG;4 l/ D3 b# E" H& v# P( p* _) {
assign STROBE = STROBE_REG;
" g% M2 O. }' J4 M, ]7 O
* T! u; Y2 O% d. q3 u1 s" f3 R- p$ U- z6 M0 z. q, o
! @; W2 S( J7 K+ x- I5 S" d9 Ilocalparam
% f( P/ \ H( K INIT = 'h0,
+ f8 F& o# {$ q A = 'h1,/ `( q% P0 n+ Y+ {% m; y9 e
B = 'h2,& E. r, m! _. w. w
C = 'h3,, l. h$ m2 ~( t7 }5 X
D = 'h4,+ u: o6 g. R% L, t5 g9 H* V
E = 'h5,( V0 n2 G, u3 \4 s1 U
F = 'h6,9 d1 b. I: L4 ~6 N
G = 'h7,3 E6 }2 O' d. k" K; ], g; @( @
H = 'h8,
g- V, O6 u8 j/ w4 N1 q8 `9 [ I = 'h9,
9 A! X* ?9 C1 C) q J = 'hA,) Y7 x. \0 x0 M7 }2 ?/ }
K = 'hB,( U" D7 Q, x+ T4 e& i
L = 'hC,& r, `9 d3 E/ v) u- M2 y9 s1 ]$ _ e
M = 'hD,0 M, z$ `9 J. y n! z) }4 Y9 |
N = 'hE," q6 @ D& u" X! D* ~; M- S
O = 'hF,2 u$ W/ ` p; X
P = 'h10,; @2 w: a0 F/ M: S% e
Q = 'h11,
2 \0 J7 K' s2 ` B, d R = 'h12,& v- t7 U: Y' L& m4 p* e3 c3 Q( @3 Z
S = 'h13,9 O( N4 v" i1 O$ _6 G, l
T = 'h14,1 o9 X: ], P x
U = 'h15,
7 s: w2 m* u% _& r V = 'h16,+ g# n" ]( n# N! u$ A% @, j
W = 'h17,
; C M6 j) \6 K8 N X = 'h18,6 ~- {7 b4 Y" O' y1 K: Q
Y = 'h19,
: W1 V9 U3 k% k4 t5 g Z = 'h1A,. c8 e" E7 w- k. F/ N
DONE = 'h1B;
1 F% E8 W7 U! A( [5 J: }: {0 o+ K6 X! x" b- l3 T+ W% p( i6 U( N/ ]
! G) g' R# l7 @$ b4 W. I" halways @ (posedge Clk)
% a! j4 v$ g/ @7 x. }begin
. x, w7 F* ]. F4 _& I/ n if(RESET)
2 Z* y( J: }6 n" Z& Y$ J begin
5 d! W5 _: D" z STATE <= INIT;, p& y6 e' {6 D& P. e$ ^
STROBE_REG <= 1'b0;4 Q8 ~( v- G: }5 @
LETTER_REG <= 5'b00000;
9 Y- n/ d0 i+ S; `" \9 \ end5 s% b% K5 ^( s3 c) ?- e
else
, a9 A7 {" s1 U; V& G" s begin
; P' ]( L% V$ L* C' ?3 U case(STATE). D8 k3 k: ^* E/ d( [, ~
INIT:5 f5 _) I5 s; a7 y, n
begin7 W2 ^$ t: r, R0 n4 h' b
STROBE_REG <= 0;
4 x8 U1 b5 x1 c3 Q& g. [% c if(SHORT) STATE<=E;
& u9 Q7 j, F, o; H' g9 [- Q if (LONG) STATE <=T;
9 Q$ ?+ k0 }8 f% y- T. | end
/ k% r0 b( G3 q9 J% \ A:/ f7 y/ _6 g' [ d3 S- G' P- g
begin
0 o2 H0 W7 J u4 O! g if(SHORT) STATE<=R;
2 |# J( t$ E# W- a1 f! _& ~) L) q if (LONG) STATE <=W;# d3 n4 G- W4 [/ o/ C3 P* f3 ~9 v
if(END_CHAR) STATE<=DONE;; X' J4 z9 w. U& Z; m- [- b/ @
LETTER_REG <= STATE;
: w+ R2 j5 f; t7 i# } end% x! O8 H; p1 w6 q. w# H, M. V; e
B:& N% a. Z) ] V" `" S: C6 O
begin
^8 p: q0 }/ a9 f* I2 C if(END_CHAR) STATE<=DONE;
k* o# f" Z! k4 o LETTER_REG <= STATE;7 r. f8 Z! o( Q0 Q) a
end
5 Z- k: k7 E& j K" g( e. j [# X C:6 z2 l- t: [: Q7 j7 H1 d" a, I. q
begin _7 n3 M; z6 ?. ]* d
if(END_CHAR) STATE<=DONE;) x, A* n8 C' _9 E# i
LETTER_REG <= STATE;
# ]' R5 E$ E: c) c) ` end7 v; z' M; u; b2 v
D:! k: U* _/ K4 k
begin; |0 A5 d7 N/ c. d" d, U& N+ w! s
if(SHORT) STATE<=B;
) q |! z: d1 @/ g if (LONG) STATE <=X;4 |: E8 g2 g9 x" {
if(END_CHAR) STATE<=DONE;
1 d1 m, S- v* Z8 ? LETTER_REG <= STATE;
1 _3 M8 b# S- H: t% R, a) A; [ end& M- s% G0 K. J, T5 _
E:- |% o1 q4 ^) W! G/ w4 K
begin
: W0 F) R k5 Q2 { if(SHORT) STATE<=I;
5 h9 _$ m3 _0 |8 x1 ~# \1 H if (LONG) STATE <=A;
4 C `- }5 B7 z& q# p9 P if(END_CHAR) STATE<=DONE;) V0 S _! c2 s
LETTER_REG <= STATE;
) F5 P+ Y$ K& ^ k4 F8 q, T! \ end5 b) w! s; Q7 K' t4 b6 r E! e
F:# Q' T* V# Y) x0 m) y
begin
/ V6 m* Q5 q" t/ q8 c; X if(END_CHAR) STATE<=DONE;
- V+ x2 O9 V3 u' _9 m2 k% m LETTER_REG <= STATE;
& D0 g: E, [9 B+ O' i5 @ end
% m0 H9 N! Z0 P6 r+ t) p! k G:8 U# i0 @3 C; O+ R
begin
# f' ~/ v" ~+ o( J- @8 M; n if(SHORT) STATE<=Z;$ B& m/ J: q. C+ ]; i* F
if (LONG) STATE <=Q;
) u' t" D! x) w' D if(END_CHAR) STATE<=DONE;
4 U: }7 d0 |1 P0 D% v LETTER_REG <= STATE;1 @2 w6 M. f/ e# n
end
2 x; e% z% _/ i2 x0 @) B! A H:& D* ], G. z3 V R: ~1 ?' P
begin; [9 C9 m# T3 M
if(END_CHAR) STATE<=DONE;
2 f/ U; D; @$ J4 ?- S! o LETTER_REG <= STATE;& b2 k5 I4 A7 |+ c( A
end
" Z3 x. y& M* s; |: u; }: n8 \0 u I:% _: e [1 | q
begin! u: k1 A5 a5 Y! m. t5 c. R
if(SHORT) STATE<=S;
" _* v2 i& j# [* K. l, `' b+ W if (LONG) STATE <=U;5 d; S8 }' P& Y% K1 I
if(END_CHAR) STATE<=DONE;# r/ F1 A) ]% g/ z. V" E# x/ m
LETTER_REG <= STATE;
; r7 |- O/ I9 e. T end- ]3 S" ]3 m+ E8 T7 [; s; k! K
J:
( w3 h- D& {' `, D) s0 g3 Y m+ r& r begin+ s. W. k1 z) H# M n5 ?
if(END_CHAR) STATE<=DONE;5 f, l) X: N4 A+ b6 I' w9 K
LETTER_REG <= STATE;
N. b+ o0 h9 _1 v end
& k9 p, c: w, ^& {% _ K:
8 l& O1 }' q6 ` begin# j$ F- l# e/ N' g5 L0 V& }
if(SHORT) STATE<=C;
: a5 O# M& m$ ]7 ]- ? if (LONG) STATE <=Y;" B; W: S3 p$ }( k d0 U+ d$ W
if(END_CHAR) STATE<=DONE;" U6 V0 G, u, C9 ]3 d" A: n
LETTER_REG <= STATE; P/ \& c( c2 D; c# n9 f
end
, z/ [: G1 f# y8 L! l$ m L:" j6 U' l# y: w ^, m% o3 i
begin
, e. G( Z0 G1 k) N if(END_CHAR) STATE<=DONE;7 y6 h" B4 ~% r4 ^2 V2 ?
LETTER_REG <= STATE;/ ?5 f2 ~7 k! b
end
8 f# M! A1 Y/ i3 G% z; [: s M:
6 W& x) N: `/ S S4 { begin- R1 y! U" ~: L; N6 ^, E* i4 h
if(SHORT) STATE<=G;/ n9 L1 O5 `3 _# ?
if (LONG) STATE <=O;
& B V4 J9 {+ q; o0 f E if(END_CHAR) STATE<=DONE;
, ]- r3 S% B! R1 I/ Q8 W% Z LETTER_REG <= STATE;
" n( ~+ q4 U/ m I) f$ s0 _ ? end' n/ G' S l0 ?% K# @% v' T
N:
/ C/ K# X& | T, Y- k begin2 s$ G! z, I2 \( J! E# P
if(SHORT) STATE<=D;5 D& t& R R0 `& ]9 I. t
if (LONG) STATE <=K;
9 h6 H2 D: I$ X; |! {$ m4 d if(END_CHAR) STATE<=DONE;
2 d; W/ u7 e; q LETTER_REG <= STATE;
( S; ~% C+ t2 W, c4 M6 ] end
; Y1 \- X1 X) } O:
1 f( l/ l* r; n* B8 s' L begin9 o6 @" _& @$ {6 l$ R/ Q
if(END_CHAR) STATE<=DONE;+ E& n$ P9 h1 h% H: m
LETTER_REG <= STATE;
: U7 G" Q, q1 F) g2 S* a! C end
( C$ @8 K6 r' s P:
c$ Y p5 E/ `1 N3 i/ L0 F# y begin
$ r1 ~* Y& _6 p+ T3 \) {: y2 F if(END_CHAR) STATE<=DONE;* |- |% ?2 _2 C1 _1 T
LETTER_REG <= STATE;& w1 u" j0 U; o* Z; g1 I5 P6 ~
end
, j P: S+ t" E+ S5 _' r# o. R( ^' _ Q:
$ y2 X6 G0 }' y" \% [5 } begin
* i0 O: s& c# t" L if(END_CHAR) STATE<=DONE;
, P0 i% O: _, g, | LETTER_REG <= STATE;
! W" U* ~4 R" F end
' L& ^* P, B' h3 ^9 x" D; Y/ s( X R:
2 Y7 R1 |; A2 H4 } begin! V5 G+ e, h3 Y, v& s7 [, q6 {
if(SHORT) STATE<=L;* |4 Q$ U8 t7 L" D
if(END_CHAR) STATE<=DONE;0 h) q1 \7 _. M& ]$ L; A+ \9 b
LETTER_REG <= STATE;
8 b3 A& @" Y' g end4 Z8 A7 q$ B/ X' `( F
S:) j+ B5 _* L' X. Y( x
begin7 q. M( @' }4 E7 y
if(SHORT) STATE<=H;
s4 w. ?5 L% U: Z! b if (LONG) STATE <=V;
6 Y" c1 U; y! C& b+ K' n5 b if(END_CHAR) STATE<=DONE;( ]4 D) W8 w- B# F( ?1 [8 _
LETTER_REG <= STATE;
% X& U: L" q5 v, ^) c J0 F) U& A end
/ W9 z& N& P4 E- o' | T:# S! B3 J1 ^; w4 @, R
begin
2 B$ n n3 ^& V1 ~- e if(SHORT) STATE<=N;; J) j+ N9 ?, ?8 D* b
if (LONG) STATE <=M;- n! w. Y) h O9 W
if(END_CHAR) STATE<=DONE;' a4 C8 z2 Y1 W$ P
LETTER_REG <= STATE;* S5 `: @0 U2 B4 v" a0 t" J8 N4 s
end
% V4 R2 t9 ?1 L p. w5 @/ H U:
0 y5 r3 l2 t- a. G! X begin" M' u! H% s3 L$ y$ s
if(SHORT) STATE<=F;7 z O _- V' f+ u& K! k$ k
if(END_CHAR) STATE<=DONE;
# o9 J1 N' |* V0 f2 H& }. g# O LETTER_REG <= STATE;* r' e# \7 c o' _3 J
end
6 v# q7 A$ e+ y% h V:' q6 Z, e7 B7 J9 h ?: h0 y+ ]
begin! `0 |: z( X6 G3 o% a/ X, Y, C2 P
if(END_CHAR) STATE<=DONE;
1 d7 D% T+ a! K" Q, K! Z LETTER_REG <= STATE;/ g9 C! k- Z2 \" k# O! \4 j% K
end0 v" Y7 a. E/ Q0 s/ }. F
W:. W( @, H; V3 D, o: ~& O6 N f
begin
3 E+ Y& J% g v1 e5 u/ x9 z/ C if(SHORT) STATE<=P;
- |/ F/ a$ O+ U+ z' w- B+ p; A/ k8 S if (LONG) STATE <=J;
# O6 I3 I, S, ^0 ` if(END_CHAR) STATE<=DONE;
1 G [, B+ }9 G1 M; }* Z& p LETTER_REG <= STATE;' O3 ^# Z6 L# w0 h r% {! `
end9 D1 N/ }' K+ |! |. b- r: d
X:3 e) P/ o- _ `& z
begin1 j( A( U; X1 k
if(END_CHAR) STATE<=DONE;; g* E6 ~9 q% x) `4 V/ e+ Z" ~
LETTER_REG <= STATE;
" f) V c1 ^ {2 c end1 @$ h9 R9 u# ~) o; @, d& ? F8 L0 g" u
Y:; T+ z4 `/ r H& k3 t
begin
8 j! h' v' \; X: b5 M if(END_CHAR) STATE<=DONE;
( \5 y, w/ e( I2 M; m: D LETTER_REG <= STATE;
+ K. t3 V- D) e1 \, ~2 i end
/ J3 H1 K( _. `/ a M2 U Z:7 Q7 @$ N- b# a" m$ D O3 z
begin! W4 W$ L2 f" B, \( Q
if(END_CHAR) STATE<=DONE;
+ @* C4 C/ A/ @8 |1 s0 m |, m LETTER_REG <= STATE;
5 a) F ]5 U5 h; T, W end
. c" h5 A7 S/ }' ? DONE: STROBE_REG <= 1'b1;5 f/ c9 u4 a" n
default: STATE <= 5'bXXXXX;
: s/ Y4 S* I) Q% ~! f) m( l5 i5 E endcase e1 i# K# M+ @% ^5 V5 N' S6 O6 o( |
end" z8 i; J# t7 R7 u
end, B1 o; ^) N4 g+ q
T2 q8 O/ J' qendmodule
7 }% t+ W+ p G, v5 ^ |
|