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module top;
reg r_clock,j,k,s,r;
assign clock = r_clock;
jkff inst1 (t, tbar, j, k, clock, s, r);
initial begin
$monitor ($time,,"t=%b,tbar=%b,j=%b,k=%b,clock= %b,s=%b,r=%b",
t, tbar, j, k, clock, s, r);
j = 0;
k = 0;
s = 1;
r = 1;
end
initial begin
#10 s = 0;
#10 r = 1;
#10 r = 0;
#10 r = 1;
#10 j = 0; k = 0;
#10 r_clock = 0;
#10 r_clock = 1;
#10 j = 0; k = 1;
#10 r_clock = 0;
#10 r_clock = 1;
#10 j = 1; k = 0;
#10 r_clock = 0;
#10 r_clock = 1;
#10 j = 1; k = 1;
#10 r_clock = 0;
#10 r_clock = 1;
#10 j = 0; k = 1;
#10 r_clock = 0;
#10 r_clock = 1;
#10 j = 0; k = 0;
#10 r_clock = 0;
#10 r_clock = 1;
#10 r = 0;
#10 r_clock = 0;
#10 r_clock = 1;
#10 r = 0;
#10 s = 1;
#10 r_clock = 0;
#10 r_clock = 1;
#10 r = 1;
#10 s = 0; r = 1;
#10 s = 1; r = 0;
#10 s = 1; r = 1;
#10 s = 0; r = 0;
#10 s = 1; r = 0;
#10 s = 0; r = 1;
end
endmodule
// jk flip flop from valid SIM library
module jkff (t, tbar, j, k, ck, s, r);
parameter rise = 0, fall = 0;
input j, k, ck, s, r; // J, K, clock, s, clear
output t, tbar; // data outputs
JK_Q #(rise, fall) (t, j, k, ck, s, r);
JK_QBAR #(rise, fall) (tbar, j, k, ck, s, r);
endmodule // jkff
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