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always @(posedge CLK_50M or negedge PORB)
5 y/ j. D3 g, ]0 Y: J1 Y$ X2 Obegin
3 a5 o* l. k( r if(!PORB); g. C# j+ C' o* t) n' h* d1 }# l
sys_signal_d1 <= #1 1b'0;
" j9 d) t% k" s. i1 N else
0 Y, K. j* }, o" u, A' f; J( } sys_signal_d1 <= #1 sys_signal;
2 j* E( ?& W6 n0 b b- \8 N" H4 Eend
. F; U- r K2 X I" f- h
& g8 Q6 i/ i' y* j6 w: s: Sassign sys_signal_pul = sys_signal & ! sys_signal_d1;9 e) x5 j; Z7 V2 d) A" ^
* v$ F* r+ A. }, |8 Malways @(posedge sys_signal or negedge sys_signal_pul); m, x7 x& i! c/ o
begin" p5 \9 W% h/ m" [( u
if(!sys_signal_pul)
* Y1 M% _/ l6 e: d2 R0 H+ p rst_B1 <= #1 1'b0;
6 P8 O" G2 ^$ h8 j, H* |3 m else
6 K6 d' w6 Z& _% P1 {9 R# ` rst_B1 <= #1 1'b1;
8 k2 q4 g( o. I) _end |
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