yosys4gal/cells_sim.v

module GAL_SOP (A, Y);
	parameter WIDTH = 0;
	parameter DEPTH = 0;
	parameter TABLE = 0;

	input [WIDTH-1:0] A;
	output reg Y;

	integer i, j;
	reg match;

	always @* begin
		Y = 0;
		for (i = 0; i < DEPTH; i=i+1) begin
			match = 1;
			for (j = 0; j < WIDTH; j=j+1) begin
				if (TABLE[2*WIDTH*i + 2*j + 0] && A[j]) match = 0;
				if (TABLE[2*WIDTH*i + 2*j + 1] && !A[j]) match = 0;
			end
			if (match) Y = 1;
		end
	end
endmodule

module GAL_1SOP (A, Y);
	parameter WIDTH = 0;
	parameter DEPTH = 0;
	parameter TABLE = 0;

	input [WIDTH-1:0] A;
	output reg Y;

	integer i, j;
	reg match;

	always @* begin
		Y = 0;
		for (i = 0; i < DEPTH; i=i+1) begin
			match = 1;
			for (j = 0; j < WIDTH; j=j+1) begin
				if (TABLE[2*WIDTH*i + 2*j + 0] && A[j]) match = 0;
				if (TABLE[2*WIDTH*i + 2*j + 1] && !A[j]) match = 0;
			end
			if (match) Y = 1;
		end
	end
endmodule

module GAL_INPUT (A, Y);
	input A;
	output Y;

	assign Y = A;
endmodule

module GAL_OLMC (C, E, A, Y);
	parameter REGISTERED = 0;
	parameter INVERTED = 0;

	input C, E, A;
	inout Y;

	reg internal;

	assign Y = E ? internal : 1'bZ;

	generate
		if (REGISTERED == 1) begin
			always @ (posedge C) begin
				internal <= (INVERTED == 0) ? A : !A;
			end
		end else begin
			always @ (*) begin
				internal <= (INVERTED == 0) ? A : !A;
			end
		end
	endgenerate
endmodule