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不好意思" M# H, [+ Q' n' |' e) ^! f
/ P! q/ L+ x) p想請問這晶片中的程式碼內容
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說明他有什麼功用
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module keytr (' d2 a* v! n) p b$ \8 f
key,; w+ r- g$ }* ^( @
ON, T) D' G9 H+ X+ @( {
clock,
5 w; z6 a- ?* y$ N: SKEYON,
0 i( [8 `* P; z6 [counter, Z9 K: c% j; e
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);
& C% y3 l' @9 Y( U/ p8 Qinputkey;9 ^ `% [: ~$ E; m) B+ O8 l
outputON;
! {5 Y+ W! V" u3 coutput KEYON;
" _2 p) S# u0 b6 V; H( pinputclock;
0 C7 Z/ O- c7 q1 @+ loutput [9:0]counter;8 U* E' {9 B" K7 I3 W8 w
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reg [9:0]counter;
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reg KEYON;
5 O( w) C% D8 f5 N3 hwire ON=((counter[`OUT_BIT]==1) && (key==0))?0:1; 4 l% T2 J R- y* B/ H
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always @(negedge ON or posedge clock) begin0 A9 H3 k A) U* S
if (!ON)- q. c( |8 `1 T" m
counter=0; 6 l8 ^3 e$ S' @4 s. R) x% S
elseif (counter[`OUT_BIT]==0)
1 n1 E" X1 n% H% o0 U3 ?! Scounter=counter+1;8 J# `/ m( o y' t9 b* `+ U7 U
end( S% d W" V" [3 Q4 _% w% X
$ Q: ~; n( C* p" Galways @(posedge clock) begin
8 }" z/ P1 g2 K3 u) ?& b* ?! xif ((counter>=1) && (counter <5))0 E1 F# |9 C- Z
KEYON=0;
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KEYON=1;
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9 @% e- M3 a4 L4 H) R, {/ kendmodule |
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