标题: 请问高手reset signal should not be used as set啥意思 [打印本页] 作者: mengzhuhao 时间: 2008-5-8 21:34 标题: 请问高手reset signal should not be used as set啥意思 请问高手reset signal should not be used as set啥意思* f0 b* ~# l' M. z
如按照下面的写法检查工具会提示上面的错误 ' l4 [# {4 k+ |' T+ F9 @8 K1 [6 n2 X: T' Z; u
always @(negedge clk)begin 1 I6 X( x4 o4 t- T2 V( a @# L
if(!reset)begin ; v' z* c; i! w1 J* D' n6 d
clk1<=1; u4 n) Q2 B2 J; I" B clk2<=1; v; j; J$ \( w' g end ! N0 C8 D6 B' d) N9 b+ s* L else begin / `7 }$ U/ L& H5 r6 z clk1<=clkout2; 7 _1 S/ z7 `$ g4 y9 }
clk2<=clk1;4 U) o) ?/ O0 S! _
end 6 O, d$ W% x" q6 ~+ d5 ?* k end 9 d2 h n' x9 @$ U. S [email=always@(posedge]always@(posedge[/email] clk)begin, d' y, r: ^ v( W& o5 K% z! R
if(!reset)begin 3 D" F8 j/ @ ^- y
dataout<=0; : v" i4 p& b& m% f. ^* @: P dataoutemp<=0; ' Y# @/ \' y/ o( N5 R* V: L end7 N6 w8 }: \, O H8 x$ c8 B
else if(clkout2&(clk1^clk2))begin , K2 @1 D$ q6 g! Z
dataout<=dataoutemp; ) c4 Q, a( l. D dataoutemp<=dataoutemp+1; 0 ?9 |2 j& o2 E2 R( @) p+ s
end % [3 v: ]6 n1 d# h$ J8 J end