blob: 44cbd394eefe3f67eb50dfdceedf9c7eb03a9292 [file] [log] [blame] [edit]
module dffcp
( input d, clk, pre, clr, output reg q );
always @( posedge clk, posedge pre, posedge clr )
if ( pre )
q <= 1'b1;
else if ( clr )
q <= 1'b0;
else
q <= d;
endmodule
module top (
input clk,
input a,
output b
);
dffcp u_dffcp (
.clk (clk ),
`ifndef BUG
.clr (1'b0),
.pre (1'b1),
`else
.clr (1'b1),
.pre (1'b0),
`endif
.d (a ),
.q (b )
);
endmodule