yosys/techlibs/greenpak4/cells_sim.v

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2015-09-16 02:28:37 -05:00
module DFF(input D, CLK, nRSTZ, nSETZ, output reg Q);
always @(posedge CLK, negedge nRSTZ, negedge nSETZ) begin
if (!nRSTZ)
Q <= 1'b0;
else if (!nSETZ)
Q <= 1'b1;
else
Q <= D;
end
endmodule
module LUT2(input IN0, IN1, output OUT);
parameter [3:0] INIT = 0;
assign OUT = INIT[{IN1, IN0}];
endmodule
module LUT3(input IN0, IN1, IN2, output OUT);
parameter [7:0] INIT = 0;
assign OUT = INIT[{IN2, IN1, IN0}];
endmodule
module LUT4(input IN0, IN1, IN2, IN3, output OUT);
parameter [15:0] INIT = 0;
assign OUT = INIT[{IN3, IN2, IN1, IN0}];
endmodule