4. 4 : 再一次“组织”起来:- L( M' r6 U3 n) n
这一章,我们要讲 effect_module 和 flashing_module 组织起来,然后命名为“done” 代码如下:
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1.module done 2.( 3. CLK, RSTn, 4. Start_Sig, Done_Sig, 5. Q, 6. Right_Done, Left_Done, //用于观察 7. Right_Start, Left_Start //用于观察 8.); 9.7 Z- ^0 d; U3 _; g) b) L
10. input CLK; 11. input RSTn; 12. input Start_Sig; 13. output Done_Sig; 14. output Left_Done; 15. output Right_Done; 16. output Right_Start; 17. output Left_Start; 18. output [7:0]Q; 19.1 f5 L: u6 o* p' U! t
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/*******************************/ 21.. r2 Q6 Q: y# T! r' h3 J9 [( V5 N B
22. wire Right_Start_Sig; 23. wire Left_Start_Sig; 24. wire Right_Done_Sig; 25. wire Left_Done_Sig; 26." e! q k5 g- c! n& t. M
27. effect_module U3 28. ( 29. .CLK( CLK ), 30. .RSTn( RSTn ), 31. .Start_Sig( Start_Sig ),$ u1 W: W- o) Z9 }& M
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- x6 e$ W+ @/ K4 Q4 H- c // in from top 32. .Done_Sig( Done_Sig ), 4 n+ |3 ~: [( b, R: M
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// out to top 33. .Right_Start_Sig( Right_Start_Sig ), + i4 X; U6 u$ s8 ?& A: F
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// out to U2 34. .Left_Start_Sig( Left_Start_Sig ),
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// out to U2 35. .Right_Done_Sig( Right_Done_Sig ), ; a! G2 X1 G E6 L. l0 |
// in from U2 36. .Left_Done_Sig( Left_Done_Sig ) - M) D, t6 @( U
// in from U2 37. ); 38.
7 t4 ]3 M: Y# u3 p2 V. S# E8 S 39.
! d' m1 i* G, {; _6 Y0 D6 W/*************************************/ 40.
! L, S! ~: I, _+ x- H 41. flashing_module U4 42. ( 43. .CLK( CLK ), 44. .RSTn( RSTn ), 45. .Right_Start_Sig( Right_Start_Sig ), // in from U1 46. .Left_Start_Sig( Left_Start_Sig ), 2 p* j, @. m0 W7 {
// in from U1 47. .Right_Done_Sig( Right_Done_Sig ), 2 L" E' M3 c/ y! h' {
// out to U1 48. .Left_Done_Sig( Left_Done_Sig ),
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// out to U1 49. .Q( Q ) // out to top 50. ); 51.7 p% [9 z' _( O$ y- X! _
52. /*************************************/ 53.: n+ d9 W$ h$ j1 S/ m9 |
54.
) R( a0 x; N; U- E/ S+ `+ P" r. {6 X//用于观察 55. assign Left_Done = Left_Done_Sig; 56. assign Right_Done = Right_Done_Sig; 57. assign Right_Start = Right_Start_Sig; 58. assign Left_Start = Left_Start_Sig; 59.
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这是第二层的组织了,到这里基本上我们已经完成如下图的效果 * A m7 W) @3 h
1. `timescale 1 ns/ 1 ns 2. module done_vlg_tst(); 3. reg CLK; 4. reg RSTn; 5. reg Start_Sig; 6.7 R4 i1 H" E! R1 b- Q7 o" V/ x7 G
7. wire Done_Sig; 8. wire [7:0] Q; 9. wire Left_Done; 10.wire Right_Done; 11.wire Right_Start; 12.wire Left_Start; 13.done i1 14.( 15.
! K9 M$ e6 b1 z.CLK(CLK), 16.
) V' n+ x/ n0 r+ n' A& `! |3 ^.Done_Sig(Done_Sig), 17.5 {: {6 N" M0 j6 r* L
.Q(Q), 18.) s9 p& F$ Q( l/ K: v
.RSTn(RSTn), 19.
! [( U% {" o3 A4 g.Start_Sig(Start_Sig), 20.
/ u( W( m4 u# T4 f0 X7 d.Left_Done( Left_Done ), 21.& x9 ]! b2 ]5 _
.Right_Done( Right_Done ), 22.8 U6 }, M9 V/ I! O U( N! s: p
.Right_Start( Right_Start ), 23./ w# b* w9 t( J; o7 R: _
.Left_Start( Left_Start ) 24.); 25. 26.initial 27.begin RSTn = 0; #20; RSTn = 1; end 28. 29.initial 30.begin CLK = 1; forever #20 CLK = ~CLK; end 31. 32.initial 33.begin Start_Sig = 1; end 34.
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下面是仿真的载图:
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http://j.imagehost.org/0352/PIC10_7.jpg |