|
3#
樓主 |
發表於 2008-5-2 12:44:58
|
只看該作者
回覆
比如說我的code如下: Y$ v8 t! y$ [' l9 ~7 B
9 {# y- u9 S/ ^; A, k+ v. _, i" _
module firo( run, Dout);
! r8 x" \3 T: y p, o7 k, C8 W/ k3 p4 p0 |/ M
input run;
* T/ X8 D! T( r2 \. \) N9 Xoutput Dout;
Y* G0 b' F1 {/ Q9 b4 b
) X- t5 w. l7 a8 o, {! Hwire run, Dout, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12;3 g3 d2 B4 Q- W, L" u: @2 x
wire w13, w14, w15, w16, w17, w18, w19, w20, w21;
( Y; ^! y% K; [8 }) |3 U% ?0 q+ q% W+ c9 W
nand na1(w2, run, Dout);6 o/ b% |" W& I' W$ P0 j- @! c S
xor x1(w3, w2, Dout);
% _1 ?! ^1 a% c* ~. Dnot n1(w4, w3);
7 W3 P J- U. e: v) b6 c& T# u, A9 ]not n2(w5, w4);
, Y* }4 }: |1 _not n3(w6, w5);
& C0 C% z5 Q+ h9 r1 B5 q) onot n4(w7, w6);- t' Q: R- n) r6 ]# r
not n5(w8, w7);
( G3 R' A- x. w d5 a$ X) G, `$ J, Pnot n6(w9, w8);
/ c# ?2 f* m3 D/ }3 l; nnot n7(w10, w9);" h& ~5 I. e! I
xor x2(w11, w10, Dout);$ ]( L2 y d* ~' Y6 y
not n8(w12, w11);
1 q9 E" n5 E. d+ }5 b, m' Axor x3(w13, w12, Dout);9 x& h/ x- b" G% \" }3 L
not n9(w14, w13);7 }. k# P+ p) p+ A" y
xor x4(w15, w14, Dout);
- h6 I3 |9 a1 x: S4 E+ a; |not n10(w16, w15);6 A4 X! d$ c- s& O7 o( W9 i+ }
xor x5(w17, w16, Dout);
0 m. k/ H; h; z! B2 [- lnot n11(w18, w17);
7 S+ I! c' d' w) f/ fnot n12(w19, w18);8 c& _' D+ {; K* g1 }7 G% l
xor x6(w20, w19, Dout);
" f/ U9 H5 u2 |# E: O; p6 Qnot n13(w21, w20);/ [7 {! t, G2 W
not n14(Dout, w21);9 c4 V, C6 O8 t; Y. v, n( h, N
+ [8 y$ y0 j, V. \
endmodule7 P4 M* ]8 _, s/ w4 r" u
7 S: r1 u* J7 B) {- Z2 n
那我要怎麼加所謂的attribute 才能夠keep我的電路呢?4 _# ?' V$ i) X, r( x% |; k
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, d9 u# O7 V% y$ Y. u! }: b2 @
6 Q1 B0 x5 j* Y' l7 L& @
感激 |
|