The following Verilog always block implements a behavioral model of .pdf

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This Verilog code models a D flip-flop that stores the value of input D on the rising edge of clock in an always block. The document asks to modify this code to model a J-K flip-flop based on its characteristic equation of Q+ = JQ' + K'Q. The solution replaces the D assignment with an expression that models this J-K flip-flop equation.

Formation

The following Verilog always block implements a behavioral model of a D flip-flop:
reg Q;
always @(posedge clock)
begin
Q = D;
end
Recall the characteristic equation for a J-K flip-flop is Q+ = JQ' + K'Q.
Modify the Verilog code in this always block to model a J-K flip-flop.
Solution
reg Q;
always @(posedge clock)
begin
Q = ((~J)&Q)|(K&(~Q));
end

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