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不好意思 Q, l J; r8 W \! ~
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想請問這晶片中的程式碼內容; l" Y0 D2 \4 D
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說明他有什麼功用1 ~/ K/ u. X8 C* ]
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module keytr (
7 l( d3 v0 {4 U( e% e1 G! Dkey,3 A, h' F# X: j4 ~
ON,- f. `0 q4 O4 L% p8 t3 I
clock, z) m8 M8 N4 q: F! \: X: N0 u
KEYON, S- E, Z" B/ d0 x/ i5 n
counter
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inputkey;2 n% N' g1 }& ?" ~* R/ F
outputON;
2 o$ s1 F6 n m& j5 x) uoutput KEYON;
( B5 s* l. p" d d* ^" m+ \inputclock;& m9 m: s+ S2 e
output [9:0]counter;
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reg [9:0]counter;
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1 F1 g3 M F0 M% ?reg KEYON;
& r+ [* [6 ?/ A% g' lwire ON=((counter[`OUT_BIT]==1) && (key==0))?0:1;
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+ `6 J* e n9 y0 p2 C7 q Qalways @(negedge ON or posedge clock) begin* R" d/ k* G: V5 I
if (!ON)( ~8 ^4 w V! N: n+ {, h0 Q! _
counter=0;
9 I$ \5 s) ?; r1 T gelseif (counter[`OUT_BIT]==0)8 T1 C( y0 K3 N1 d
counter=counter+1;; M& F8 i+ k0 X$ H. Q, W
end% `( d6 k# s1 A1 P+ p$ I3 l3 @) g
" n' E/ P2 m( u5 i" x! L" `always @(posedge clock) begin. A( V" P4 h2 E M" t! H% s! n% R+ d
if ((counter>=1) && (counter <5))4 U( F) d+ n/ U M
KEYON=0;
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KEYON=1;/ Y+ I T5 R" A. ~7 L3 K! l
end
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/ E& l3 _+ ]# Uendmodule |
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