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NET "clk" TNM_NET = "clk";
TIMESPEC "TS_clk" = PERIOD "clk" 16 MHz HIGH 50 %;
OFFSET = IN 20 ns BEFORE "clk"  ;
OFFSET = OUT 20 ns AFTER "clk"  ;
OFFSET = IN 26 ns BEFORE "ale" LOW ;

NET "clk"  LOC = "P5" | BUFG = CLK;
NET "ale" LOC = "P6";
NET "rd" LOC = "P42";
NET "rst" LOC = "P39";
NET "wr" LOC = "P7";
NET "ad<0>" LOC = "P33";
NET "ad<1>" LOC = "P34";
NET "ad<2>" LOC = "P35";
NET "ad<3>" LOC = "P36";
NET "ad<4>" LOC = "P37";
NET "ad<5>" LOC = "P38";
NET "ad<6>" LOC = "P43";
NET "ad<7>" LOC = "P44";
NET "q0<0>" LOC = "P27";
NET "q0<1>" LOC = "P26";
NET "q1<0>" LOC = "P24";
NET "q1<1>" LOC = "P25";
NET "q2<0>" LOC = "P19";
NET "q2<1>" LOC = "P20";
NET "q3<0>" LOC = "P29";
NET "q3<1>" LOC = "P28";