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發表於 2008-5-2 12:44:58
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比如說我的code如下:
3 v$ \: U2 u/ D5 c1 e. u5 A* x
; p2 V& R+ p+ `- k4 Y* E( Amodule firo( run, Dout);) C3 S, ]9 M" h( y. e8 a
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input run;4 J& @% m, t; o& ~4 K" S& W
output Dout;/ H( u- B5 c3 a% H* D) B5 N9 M* m
' z w% j2 G Vwire run, Dout, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12;
" G+ T N2 \5 ^wire w13, w14, w15, w16, w17, w18, w19, w20, w21;
2 L5 e- b1 ?8 f( \, ^
& Z$ {; R7 Q B+ `nand na1(w2, run, Dout);5 J% O: r$ C0 F$ E8 ]+ c! x
xor x1(w3, w2, Dout);
- {) N# ?' h# [( b) onot n1(w4, w3);
8 `8 g9 Y- l- G$ C: W4 Gnot n2(w5, w4);
/ s% G: i W1 f: f" w+ Dnot n3(w6, w5);
1 I& b: s3 s0 A7 c2 b- Ynot n4(w7, w6);: c; a# r9 \, u, J1 o8 L
not n5(w8, w7);) [5 |; U" p, Q, f8 o W+ z9 U
not n6(w9, w8);: [: w$ a. K0 y- Y0 o: F
not n7(w10, w9);
- p1 P- {: f0 K9 p4 ~6 i- `2 {xor x2(w11, w10, Dout);
: \/ K' v0 R3 i" r$ Unot n8(w12, w11);( ^8 h/ h0 y3 w+ I; `! A
xor x3(w13, w12, Dout);
" g2 e7 g, r- d" W+ c7 f( T3 anot n9(w14, w13);
# N7 v2 ]5 }$ ?& D! Gxor x4(w15, w14, Dout);
8 ]1 W) A6 n4 y2 I! Hnot n10(w16, w15);
d' p K5 t: L7 Zxor x5(w17, w16, Dout); h% t: g: H4 O# P9 f" k; _+ B
not n11(w18, w17);
2 W j0 F2 o5 Z$ n1 bnot n12(w19, w18);
5 q9 Y% M3 L+ `xor x6(w20, w19, Dout);
7 t; }6 c8 g! F& L; ]5 G( K; K4 }) znot n13(w21, w20);
2 ?+ z1 w: k: G% \not n14(Dout, w21);- Z4 L. o6 C6 y7 p
" e$ j3 M2 U7 o4 h, |( z/ xendmodule
3 x6 [$ l) N% V
' r4 `6 H/ p$ j) ^6 {7 e那我要怎麼加所謂的attribute 才能夠keep我的電路呢?
/ {' g. \8 R7 ^3 R& Q- `不好意思,因為對此不甚熟析,希望大大能夠做個範例指導,這樣對初學者的我能夠較快上手% B' a! f. p$ b7 J, G1 E
t% Z3 r8 G" n7 J( b5 l _感激 |
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