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always @(posedge CLK_50M or negedge PORB)
: P( W3 } e k4 x! ^: P; y0 ubegin8 o( w$ q p. G: \, c% E8 A6 u
if(!PORB)
. p# S! A0 G- ? d sys_signal_d1 <= #1 1b'0;
1 j( x2 C4 i' Q O$ X) n else
4 h" d! Y1 D( W8 ?% w5 V: I0 t4 y2 p6 j3 ? sys_signal_d1 <= #1 sys_signal;) Y; m3 L- P+ |( ?
end6 F. {7 q/ Q3 I% [2 G
' b7 z6 ~2 T4 }! a' C) i8 D" v/ V
assign sys_signal_pul = sys_signal & ! sys_signal_d1;
, A+ f. a9 T4 m, T$ Q6 W: {) j
4 u+ O+ c3 e. V) t1 ralways @(posedge sys_signal or negedge sys_signal_pul)& O+ k1 J6 F) p. k. c2 J/ z
begin
5 F1 }9 {0 U7 |. w if(!sys_signal_pul). C, Q" x( k# Y: {1 U
rst_B1 <= #1 1'b0;; |* m0 F- c/ j6 h$ s: K
else
4 D* f0 l5 d$ R rst_B1 <= #1 1'b1;
- v8 K: z" w& p* G9 H; ?end |
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