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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: V# l4 a& p, w9 g
) b) G: t4 H2 b4 C1 ~, C& v5 P. X
module firo( run, Dout);7 G# F- ~' t9 A- E
! E1 O; X, U; f/ M+ k* r" ~7 e: @input run;- ]2 f$ S0 c- c+ R
output Dout;
$ [( h' |* k2 L( j, [# e4 {
, x. ?2 t, v F# T, S# ywire run, Dout, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12;. I8 Y6 r. G: w
wire w13, w14, w15, w16, w17, w18, w19, w20, w21;
, A5 t; A) N$ J4 \" ]* e1 b. v" Z1 o2 ~0 S! ^7 ~& h
nand na1(w2, run, Dout);
1 P1 E8 N# ~$ r, w' }7 S: uxor x1(w3, w2, Dout);
' {" v: H0 Z# R3 D& b9 Wnot n1(w4, w3);& r5 `+ T, M. j) B5 u- J# ~2 M
not n2(w5, w4);
b4 A3 w: f$ S5 X9 \, cnot n3(w6, w5);8 |7 c+ W' u" X6 [: Q, }- H8 t
not n4(w7, w6);
5 h; M% e: g- Nnot n5(w8, w7);
/ \5 N1 q# V* h) i+ ~not n6(w9, w8);/ ?" R1 g- |8 v* S* y0 `
not n7(w10, w9);& ~: i" E5 H' t' t% R
xor x2(w11, w10, Dout); M& j4 w8 ?) c' _
not n8(w12, w11);
- ^+ G6 Q6 u( Q6 E, m( ` gxor x3(w13, w12, Dout);
7 M& ]+ ~4 T; X. c) ^not n9(w14, w13);7 v5 [9 f7 w, ^0 T: F, f" G
xor x4(w15, w14, Dout);& C o( t7 d: h6 ]: m
not n10(w16, w15);
: t0 R9 c5 L0 Y" D3 Z q2 qxor x5(w17, w16, Dout);+ ^0 e/ Y( H! t# }
not n11(w18, w17);
. b' e6 d' R1 r3 O7 ~$ xnot n12(w19, w18);
0 R/ H) K! L g& p* c( Qxor x6(w20, w19, Dout);+ r/ N4 O! h; z' p
not n13(w21, w20);
2 s* \$ ?' `3 b+ L3 ~4 dnot n14(Dout, w21);
/ Z! @2 W# c* _* ], j2 W9 T# _
, S8 V% L+ l/ [% W/ \9 \& Bendmodule5 O( d. H+ v# M3 T( j
$ }/ u/ @& \9 Z: O( b那我要怎麼加所謂的attribute 才能夠keep我的電路呢?
1 }: g2 U5 i$ I) a6 a5 S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
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