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在用quartus编译时,总出现top partition does not contain any logic的错误% s1 R% q. { O5 E% W
工程中有两个文件3 A! W' d' b$ }# O8 I7 P. ]2 R% q3 ~
第一个文件muxtwo.v8 n. w0 T4 G* Q4 I
& C# ^1 X1 |) ?8 y
module muxtwo(out, a, b, sl);2 }, q* O4 ]& w' ]+ F" a* L
input a, b, sl;
9 n1 x; `7 H1 A8 g$ }3 C0 U output out;
8 Y; ^3 f7 B7 `1 l9 v j8 x reg out;
/ O! X$ F8 k! L, h+ d( G, y1 _ always @ (sl or a or b)
" f/ N+ k% i$ |1 a0 L4 f5 P if(!sl) out = a;% ?; ~2 B- Q' q# V! j1 j
else out = b;' h3 L( n% m' X3 g
endmodule. T+ b7 b% P) X) `5 R
9 \, @! y/ K4 R4 C( Z" H+ ^7 D
第二个文件test.v0 n0 [, @2 R1 \ m4 q6 D
//`include "muxtwo.v"8 J. v9 V2 f2 v4 ]
module test;6 S# u" T; l5 ^! G: n2 i- x5 ^
reg ain, bin, select;
- b% @) ?# J E Z. N6 p2 w reg clock;3 V, X3 v- t; H0 V( v# K- q7 p* L8 M, M
wire outw;5 `% C7 v' {7 z1 T# D; Q; M' |
initial
8 B! w# a/ v" G) L* @ begin
A( ?/ q1 j1 h0 r6 U: ~ ain = 0;
* w6 l3 E3 u, `* a bin = 0;
) k% b* C+ E+ g" r3 c% m select = 0;
' f' r' ]7 @1 D$ `4 j clock = 0;: u2 a( o3 g' \& X8 o/ P$ _
end) X. f' E% r' m& U }
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always #50 clock = ~clock;! w% L& P" j4 k" p
4 R g" V% C3 }: `6 l0 `1 W always @ (posedge clock). T9 S3 j+ M' P2 Y* C' X% s
begin
1 o$ p0 W5 i+ o7 F8 c //ain = {$random}%2;
! O/ L0 Q8 {/ f w* o& \: `; } //#3 bin = {$random}%2;2 h4 G. k) h4 p; k2 q
ain = 1;$ X" N* c. D0 z, g* _
#3 bin = 0;
6 a/ w( ^# M4 a) c% C5 T end% ~' P! `- z# z: G
always #10000 select = ! select;
( k+ r" G% o- \' V muxtwo m(.out(outw), .a(ain), .b(bin), .sl(select));& R3 _4 `1 B1 M/ ]/ k8 K
endmodule$ l& v' i/ u& X8 v
& P! H5 |+ l5 S0 o" z, }. y' B各位看一下,问题出在哪里,我现在纠结在这个问题上一天了 |
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